herbicides
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| Taxonomic Rank: Other damage agents > Abiotic > Other abiotic damage > |
| Category: Management: Management, Production and Research |
519 Records | View Thumbnails |
| Image | Descriptor | Description |
|---|---|---|
| 0010015 | Application | Chemical herbicides are immediately applied to the sown seedbeds. These "pre-emergence" herbicides selectively kill the germinating weeds but do not harm the tree seedlings. If weeds become a serious problem later in the growing season, then a "post-emergence" herbicide is sometimes applied over the top of the seedlings. Unfortunately, not all weeds can be controlled with herbicides so nursery workers must remove them by hand-weeding. |
| 0014161 | Equipment | Hypo hatchet |
| 0014162 | Equipment | Hypo hatchet |
| 0016270 | Competition | Total Competition-No Vegetation Control, initial planting March 1984 (Year 1), Piedmont site of COMP study |
| 0016271 | Competition | Total Competition-No Vegetation Control, six months after planting, September 1984 (Year 1), Piedmont site of COMP study |
| 0016272 | Competition | Total Competition-No Vegetation Control, 1 1/2 years after planting, September 1985 (Year 2), Piedmont site of COMP study |
| 0016273 | Competition | Total Competition-No Vegetation Control, 2 1/2 years after planting, September 1986 (Year 3), Piedmont site of COMP study |
| 0016274 | Competition | Total Competition-No Vegetation Control, April 1997 (Year 13), Upper Coastal Plain site of COMP study |
| 0016275 | Competition | Total Competition-No Vegetation Control, April 1997 (Year 13), Upper Coastal Plain site of COMP study |
| 0016276 | Competition | Woody Competition-Herbaceous Control Only, six months after planting, September 1984 (Year 1), Piedmont site of COMP study |
| 0016277 | Competition | Woody Competition-Herbaceous Control Only, 1 1/2 years after planting, September 1985 (Year 2), Piedmont site of COMP study |
| 0016278 | Competition | Woody Competition-Herbaceous Control Only, 2 1/2 years after planting, September 1986 (Year 3), Piedmont site of COMP study |
| 0016279 | Competition | Woody Competition-Herbaceous Control Only, April 1997 (Year 13) |
| 0016280 | Competition | Herbaceous Competition-Woody Control Only, six months after planting, September 1984 (Year 1), Piedmont site of COMP study |
| 0016281 | Competition | Herbaceous Competition-Woody Control Only, 1 1/2 years after planting, September 1985 (Year 2), Piedmont site of COMP study |
| 0016282 | Competition | Herbaceous Competition-Woody Control Only, 2 1/2 years after planting, September 1986 (Year 3), Piedmont site of COMP study |
| 0016283 | Competition | Herbaceous Competition-Woody Control Only, April 1997 (Year 13), Upper Coastal Plain site of COMP study |
| 0016284 | Competition | Herbaceous Competition-Woody Control Only, April 1997 (Year 13) |
| 0016285 | Competition | No Competition-Woody and Herbaceous Control, six months after planting, September 1984 (Year 1), Piedmont site of COMP study |
| 0016286 | Competition | No Competition-Woody and Herbaceous Control, 1 1/2 years after planting, September 1985 (Year 2), Piedmont site of COMP study |
| 0016287 | Competition | No Competition-Woody and Herbaceous Control, 2 1/2 years after planting, September 1986 (Year 3), Piedmont site of COMP study |
| 0016288 | Competition | No Competition-Woody and Herbaceous Control, April 1997 (Year 13), Piedmont site of COMP study |
| 0016289 | Competition | No Competition-Woody and Herbaceous Control, April 1997 (Year 13), Piedmont site of COMP study |
| 0016290 | Equipment | ATV with a spray boom, Omni Sprayer designed by Dr. Keith Patrick |
| 0016291 | Equipment | ATV with spray boon showing spray pattern, Setup for treating bands over two pine rows with 3 nozzles for each row |
| 0016292 | Equipment | a crawler tractor mounted boomless sprayer. Designed by Jim Miller and Qiu Zhangzi with gimbaled upper nozzle that remained level on various terrain. |
| 0016293 | Equipment | a skidder mounted boomless sprayer, Equipped with RadiArc Nozzle system |
| 0016294 | Equipment | a skidder mounted boom sprayer, Right-of-way sprayer with 90 ft wide spray swath. |
| 0016295 | Equipment | boomless spray nozzle; inline injection system mounted on forestry herbicide application equipment in US, 1980. Herbicides are carried in separate containers and injected into the water line. Sprayer designed by Jim Miller and Qiu Zhangza, and built in Georgia Forestry Commission shop |
| 0016296 | Equipment | a crawler mounted sprayer; Built by Cross Equipment, Albany, GA. Electric remote adjustable manifold nozzles with two herbicide inline injection system that maintained uniform rate with varying ground speed. |
| 0016297 | Equipment | a skidder mounted boomless sprayer; Designed by Sam Campbell, Scott Paper Company, 1980. |
| 0016298 | Equipment | a skidder mounted boomless sprayer. First two herbicide inline injection system used in US, a pro-type of commerical sprayer shown in 0016296, designed by Jim Miller and Qiu Zhongza and built in Scott Paper Company shop. Manifold nozzles and a adjuvant injection system with reostat control. A radar-gun controlled injection system to maintain rate with varying ground speed. |
| 0016299 | Equipment | a skidder mounted boomless sprayer; Same as 0016298. Sprayer designed by Jim Miller, USFS, and Qiu Zhongza, Nanjing Forestry University, Nanjing, China |
| 0016300 | Distribution | spray distribution from a BoomJet nozzle; Test conducted with multiple passes at 2 mph. Nozzle mounted at 6 ft height. |
| 0016301 | Equipment | a crawler tractor mounted boomless sprayer operating in 8 to 15 foot tall brush. |
| 0016303 | Equipment | Hand-crank spreader used to put out granular herbicide. |
| 0016304 | Equipment | Skidder mount granular applicator. Omni Spreader designed by Dr. Keith Patrick, and built in Prattville, Alabama. |
| 0016305 | Equipment | 4-wheel ATV with granular applicator; Tom Doody. Output shoot gimbaled to maintain swath. |
| 0016306 | Equipment | Crawler mounted granular applicator being used for release work in a plantation. Omni Spreader designed by Dr. Keith Patrick, 1982 photo. |
| 0016307 | Equipment | Helicopter with spray boom, Thru-Valve Boom and Nozzles |
| 0016308 | Equipment | Spray boom on a helicopter. Thru-Valve Boom and Nozzles by RadiArc designed by Tex Waldrum. |
| 0016309 | Equipment | Microfoil Boom and Nozzles on heliocopter |
| 0016310 | Equipment | Convention nozzles on helicopter about 1980 for Hardwood control |
| 0016311 | Equipment | Aerial application with Microfoil boom |
| 0016312 | Equipment | Velpar ULW granular herbicide applicator, Calibration procedure |
| 0016313 | Management | Velpar ULW Application System on cut-over site. |
| 0016314 | Management | Ballons used to marker for aerial application flight path/boundaries. |
| 0016315 | Management | Ballons used to marker for aerial application flight path/boundaries. |
| 0016316 | Equipment | Spray pattern from a Microfoil boom. |
| 0016317 | Research | Protype two-nozzle spray boom for improved banded applications for herbaceous weed control using a 6 ft band. A 20-inch boom and 2 Extended Range 110 degree tips applying 0.2 gpm, XR11002 by Spraying Systems. |
| 0016318 | Equipment | BoomJet boomless spray nozzle; Manufactured by Spraying Systems Co., Wheaton, IL |
| 0016319 | Research | Carbon dioxide-powered sprayer; Gas provides constant pressure to assist with uniform application for research plots. |
| 0016320 | Equipment | Spray pattern distribution of a BoomJet boomless nozzle. |
| 0016323 | Equipment | Meter-Jet handgun for spot application of herbicides. Manufactured by Spraying Systems Inc., Wheaton, IL |
| 0016328 | Application | Spot treatment around cut stump with Velpar L. Before longsleeve shirts were specified on labels as required personal protective equipment |
| 0016329 | Treatment | Cut stumps 6-months after treatment with Garlon 4 thinline to cambium layer on cut surface. |
| 0016330 | Competition | Red maple stumps 6-months after cutting but without herbicide treatment. Note sprout development. |
| 0016359 | Structure | Pesticide storage facility |
| 0016361 | Tree(s) | 2 1/2 year old pine in total weed control plot near Tuskegee AL |
| 0016363 | Competition | Planting on Bermudagrass pasture without competition control. |
| 0016364 | Competition | Planting on bermudagrass pasture with competition control, Oust-Velpar. |
| 0016367 | Damage | Seedling exhibiting chlorosis from Oust herbicide |
| 0016368 | Competition | Control of Johnsongrass in plantation using a band spray of Arsenal (4oz.) and Oust (2 oz.) |
| 0016369 | Application | Band spray and spot spray treatments. |
| 0016370 | Competition | Root growth of pine and herbaceous competition of crabgrass. |
| 0016371 | Application | Spot spray herbicide treatments around individual seedlings |
| 0016384 | Control | Treated with Garlon 4 as a streamline or thinline treatment 2 1/2 years earlier. |
| 0485010 | Damage | Arsenal herbicide damage, note dense cluster of foliage |
| 0485011 | Damage | Arsenal herbicide damage; note short needles and cluster of buds |
| 0485012 | Damage | Arsenal herbicide damage: bud clusters at terminal |
| 0485014 | Damage | Roundup (glyphosate) herbicide damage |
| 0908045 | Equipment | applying granular hexazinone on a cut-over site with a 4-wheeler. Tom Doody |
| 0908050 | Equipment | banded backpack application of Oust-Velpar after planting |
| 0908051 | Competition | banded Oust-Velpar treatment |
| 0908070 | Competition | Residual hardwood stand treated with Arsenal-Accord in mid-summer followed by a burn prior to hand planting. |
| 0908090 | Control | Site preparation with Arsenal and Accord to control residual hardwoods. Pine was handplanted. |
| 0976021 | Control | spraying herbicide to kill seedlings along road |
| 1153003 | Control | Agricultural field now infested with panicum in mid-summer after planting bareroot pine seedlings the prior winter. Washington County Georgia |
| 1153004 | Control | Agricultural field with infestation of panicum in mid-summer after planting bareroot pine seedlings the prior winter. Washington County Georgia |
| 1172034 | Equipment | Weed-o-meter |
| 1241643 | Damage | Hormone type herbicide injury causing recurved needles but minimal discoloration. Note the dead forbs. |
| 1241644 | Damage | A mixture of herbicides was used beneath this pine producing both recurved needles and foliage loss. |
| 1241645 | Damage | Herbicide injury. |
| 1241646 | Damage | Growth distortion of common mullein from hormone type herbicide. |
| 1299106 | Equipment | Boom sprayer in pasture |
| 1299107 | Equipment | boomless (=cluster) sprayer in pasture (note fines) |
| 1299113 | Equipment | herbicide incorporation |
| 1299170 | Equipment | Railroad spray rig; Utah |
| 1334095 | Equipment | Small sprayer unit on an ATV. Decatur County, GA |
| 1334096 | Equipment | Small sprayer unit mounted on an ATV. Decatur County, GA |
| 1338008 | Equipment | Small sprayer unit. Baldwin County, GA |
| 1391126 | Damage | |
| 1391127 | Damage | |
| 1391128 | Damage | |
| 1391490 | Equipment | |
| 1391491 | Equipment | |
| 1391492 | Equipment | |
| 1391493 | Equipment | |
| 1392001 | Damage | Norflurazon damage |
| 1392002 | Damage | Norflurazon damage |
| 1392003 | Damage | Norflurazon injury to seedling |
| 1392004 | Damage | Norflurazon 2.24 kg/ha ppi - effects on cotton |
| 1392005 | Damage | Basagran and Blazer drift 10-12 day. |
| 1392006 | Damage | Basagran and Blazer drift from soybenas to cotton in high wind. 10-12 days after applied |
| 1392007 | Damage | Drip-ex ropewick applicator. Dicamba drippage. |
| 1392008 | Damage | Dicamba drippage, while trying to control weeds with a wick application |
| 1392009 | Damage | Bladex and MSMA damage |
| 1392010 | Damage | Command dust, wind blown to roof, injury on ornamental holly below drip line of roof. |
| 1392011 | Damage | Command dust carried by wind blown soil onto roof. Damage to holly is below drip line of roof |
| 1392012 | Damage | Command dust carried by wind blown soil on roof. Injury to holly is below the drip line of the roof. |
| 1392013 | Damage | Karnex Post Dir. Injuries on lower leaves |
| 1392014 | Damage | Top - no damage Botton - Cobra injury .8lbs/acre |
| 1392015 | Damage | Top - no damage Bottom - Cobra .8 lbs/ acre |
| 1392107 | Equipment | Application equipment |
| 1392119 | Equipment | Plot sprayer, spraying Bermudagrass |
| 1392120 | Equipment | Plot sprayer, spraying Bermudagrass |
| 1392124 | Equipment | Shielded sprayer |
| 1392125 | Application | Wick application on nutsedge |
| 1392126 | Equipment | Hooded sprayer made from plastic drums |
| 1392132 | Equipment | Hooded sensor sprayer |
| 1392133 | Equipment | Hooded sensor sprayer |
| 1392134 | Equipment | Hooded sensor sprayer |
| 1392135 | Equipment | Hooded sensor sprayer |
| 1392136 | Equipment | Hooded sensor sprayer |
| 1402014 | Damage | Preplant incorporated herbicides may cause injury when improperly applied or not uniformly incorporated. Lateral roots may appear to be pruned, stubby, or stunted. Main roots may have areas without lateral roots. Irregular growth with stunting of the affected plants is above ground evidence of this injury. The pattern of occurrence in the field may relate to application or incorporation methods which resulted in accumulation of herbicide in "hot spots." Soil residues from excessive and/or multiple uses of dinitroanaline pesticides on sandy, low organic matter soils may retard early season growth of the next crops. |
| 1402015 | Damage | Preplant incorporated herbicides may cause injury when improperly applied or not uniformly incorporated. Lateral roots may appear to be pruned, stubby, or stunted. Main roots may have areas without lateral roots. Irregular growth with stunting of the affected plants is above ground evidence of this injury. The pattern of occurrence in the field may relate to application or incorporation methods which resulted in accumulation of herbicide in "hot spots." Soil residues from excessive and/or multiple uses of dinitroanaline pesticides on sandy, low organic matter soils may retard early season growth of the next crops. |
| 1402074 | Damage | Triazines are a group of herbicides which include atrazine, cyanazine, propazine, ametryn, prometryn, simazine, and metribuzin. Substituted ureas are a group of herbicides which include linuron, diuron, fluometuron, and chloroxuron. Both triazines and ureas produce similar injury symptoms. Injury can be caused by foliar or root uptake. Mild symptoms from low levels first appear on the tips of older leaves as yellowing between the veins. As the injury increases, the areas between the veins turn brown and progress toward the base of the leaf. The leaves will die back from the tips and edges. Plants will be stunted but may survive from very low levels; however, plant death will occur from high levels. Foliar exposure can kill the plant; however, with low levels, yellow to white areas are formed, turn brown, and fall out. Ureas may produce a brighter yellow to white leaf mottling than triazines. Symptoms of injury from all herbicides in the triazine and urea groups are very similar and are difficult to separate. |
| 1402075 | Damage | Triazines are a group of herbicides which include atrazine, cyanazine, propazine, ametryn, prometryn, simazine, and metribuzin. Substituted ureas are a group of herbicides which include linuron, diuron, fluometuron, and chloroxuron. Both triazines and ureas produce similar injury symptoms. Injury can be caused by foliar or root uptake. Mild symptoms from low levels first appear on the tips of older leaves as yellowing between the veins. As the injury increases, the areas between the veins turn brown and progress toward the base of the leaf. The leaves will die back from the tips and edges. Plants will be stunted but may survive from very low levels; however, plant death will occur from high levels. Foliar exposure can kill the plant; however, with low levels, yellow to white areas are formed, turn brown, and fall out. Ureas may produce a brighter yellow to white leaf mottling than triazines. Symptoms of injury from all herbicides in the triazine and urea groups are very similar and are difficult to separate. |
| 1402077 | Damage | Injury from phenoxy herbicides, such as 2,4-D, causes symptoms that depend on herbicide rate and age of tobacco. Young leaves are puckered and stiff, with very prominent midribs. The tips and margins of the leaves are often serrated. Higher dosages cause strappy leaves with parallel veins and twisted stems. On older plants, and the midrib also bends downward. |
| 1402078 | Damage | Injury from phenoxy herbicides, such as 2,4-D, causes symptoms that depend on herbicide rate and age of tobacco. Young leaves are puckered and stiff, with very prominent midribs. The tips and margins of the leaves are often serrated. Higher dosages cause strappy leaves with parallel veins and twisted stems. On older plants, and the midrib also bends downward. |
| 1402079 | Damage | Injury symptoms from dicamba and picloram are identical but tobacco is much more sensitive to pircloram. Symptoms are somewhat similar to 2,4-D. Young leaves are often strapped, while the edges and tips of the leaves curl downward, giving a "parrot-beak" or "cobra-head" appearance. A small pointed tip usually protrudes from the end of the leaf. Leaf margins are not serrated as is common with 2,4-D. Severe injury is characterized by strapped and stubby young leaves. Bud leaves are often short and stubby with rounded tips. |
| 1402080 | Damage | Injury symptoms from dicamba and picloram are identical but tobacco is much more sensitive to pircloram. Symptoms are somewhat similar to 2,4-D. Young leaves are often strapped, while the edges and tips of the leaves curl downward, giving a "parrot-beak" or "cobra-head" appearance. A small pointed tip usually protrudes from the end of the leaf. Leaf margins are not serrated as is common with 2,4-D. Severe injury is characterized by strapped and stubby young leaves. Bud leaves are often short and stubby with rounded tips. |
| 1402081 | Damage | Injury symptoms from dicamba and picloram are identical but tobacco is much more sensitive to pircloram. Symptoms are somewhat similar to 2,4-D. Young leaves are often strapped, while the edges and tips of the leaves curl downward, giving a "parrot-beak" or "cobra-head" appearance. A small pointed tip usually protrudes from the end of the leaf. Leaf margins are not serrated as is common with 2,4-D. Severe injury is characterized by strapped and stubby young leaves. Bud leaves are often short and stubby with rounded tips. |
| 1402082 | Damage | Injury symptoms from dicamba and picloram are identical but tobacco is much more sensitive to pircloram. Symptoms are somewhat similar to 2,4-D. Young leaves are often strapped, while the edges and tips of the leaves curl downward, giving a "parrot-beak" or "cobra-head" appearance. A small pointed tip usually protrudes from the end of the leaf. Leaf margins are not serrated as is common with 2,4-D. Severe injury is characterized by strapped and stubby young leaves. Bud leaves are often short and stubby with rounded tips. |
| 1402083 | Damage | Glyphosate is a systemic herbicide that will produce injury in 5 to 7 days after exposure to the foliage. Injury frirst appears as a light yellow discoloration in the newly developing leaves. Leaf color changes from green to pale yellow and/or white from the base of the leaf to the tip. Newly formed leaves will be narrow, and the margins will be curled downwards. Symptoms on mature leaves will consist of areas of yellow or brown tissue between the veins while the remaining area of the leaf is normal. Dead areas will fall out, resulting in a "shot-hole" appearance. Areas around the veins will often be green with a yellow discoloration between the veins. Actively growing plants will die after exposure to glyphosate. |
| 1402084 | Damage | Glyphosate is a systemic herbicide that will produce injury in 5 to 7 days after exposure to the foliage. Injury frirst appears as a light yellow discoloration in the newly developing leaves. Leaf color changes from green to pale yellow and/or white from the base of the leaf to the tip. Newly formed leaves will be narrow, and the margins will be curled downwards. Symptoms on mature leaves will consist of areas of yellow or brown tissue between the veins while the remaining area of the leaf is normal. Dead areas will fall out, resulting in a "shot-hole" appearance. Areas around the veins will often be green with a yellow discoloration between the veins. Actively growing plants will die after exposure to glyphosate. |
| 1402085 | Damage | Exposure to contact herbicides such as paraquat and dinoseb causes white lesions on leaves and stems. Other herbicides such as triazines, hexaxinone, acifluorfen, and bentazon may damage tobacco by root absorption, as well as by contact injury. The lesions turn brown and may fall out leaving holes in the leaf. Low levels of paraquat produce distinct individual lesions. With high levels, the lesions combine causing the leaves to yellow, and areas between the veins to die and fall out. If the plant does not die, later growth will be normal. Weather fleck and some types of chemicals may produce similar symptoms. |
| 1402086 | Damage | Exposure to contact herbicides such as paraquat and dinoseb causes white lesions on leaves and stems. Other herbicides such as triazines, hexaxinone, acifluorfen, and bentazon may damage tobacco by root absorption, as well as by contact injury. The lesions turn brown and may fall out leaving holes in the leaf. Low levels of paraquat produce distinct individual lesions. With high levels, the lesions combine causing the leaves to yellow, and areas between the veins to die and fall out. If the plant does not die, later growth will be normal. Weather fleck and some types of chemicals may produce similar symptoms. |
| 1403057 | Prescribed Fire | Site preparation burn after herbicide treatment. Georgia Coastal Plain |
| 1403061 | Application | Skidder-mounted sprayer applying Garlon 4 as a sitepreparation treatment. Georgia Coastal Plain |
| 1436008 | Damage | 2-4,D damage |
| 1440073 | Damage | Triazines are a group of herbicides which include atrazine, cyanazine, propazine, ametryn, prometryn, simazine, and metribuzin. Substituted ureas are a group of herbicides which include linuron, diuron, flometruron, and chloroxuron. Both triazines and urea produce similar symptoms. Injury may be caused foliar or root absorption. Low levels produce mild symptoms which first appear on the tips of the older leaves as a yellowing between the veins. As the degree of injury increases, the areas between the veins turn brown and progress toward the base of the leaf. The leaf will die back from the tips and the edges. Plants will be stunted, but may survive very low level exposure, however, plant death occurs from high level exposure. Foliar exposure can kill the plant, but at low levels, yellow to white areas are formed on the leaf which will turn brown and fall out. Ureas may produce a brighter yellow to white leaf mottling than the triazines. Symptoms of injury from herbicides in the triazine and ureas groups are similar and are difficult to separate. |
| 1440074 | Damage | Triazines are a group of herbicides which include atrazine, cyanazine, propazine, ametryn, prometryn, simazine, and metribuzin. Substituted ureas are a group of herbicides which include linuron, diuron, flometruron, and chloroxuron. Both triazines and urea produce similar symptoms. Injury may be caused foliar or root absorption. Low levels produce mild symptoms which first appear on the tips of the older leaves as a yellowing between the veins. As the degree of injury increases, the areas between the veins turn brown and progress toward the base of the leaf. The leaf will die back from the tips and the edges. Plants will be stunted, but may survive very low level exposure, however, plant death occurs from high level exposure. Foliar exposure can kill the plant, but at low levels, yellow to white areas are formed on the leaf which will turn brown and fall out. Ureas may produce a brighter yellow to white leaf mottling than the triazines. Symptoms of injury from herbicides in the triazine and ureas groups are similar and are difficult to separate. |
| 1440075 | Damage | Triazines are a group of herbicides which include atrazine, cyanazine, propazine, ametryn, prometryn, simazine, and metribuzin. Substituted ureas are a group of herbicides which include linuron, diuron, flometruron, and chloroxuron. Both triazines and urea produce similar symptoms. Injury may be caused foliar or root absorption. Low levels produce mild symptoms which first appear on the tips of the older leaves as a yellowing between the veins. As the degree of injury increases, the areas between the veins turn brown and progress toward the base of the leaf. The leaf will die back from the tips and the edges. Plants will be stunted, but may survive very low level exposure, however, plant death occurs from high level exposure. Foliar exposure can kill the plant, but at low levels, yellow to white areas are formed on the leaf which will turn brown and fall out. Ureas may produce a brighter yellow to white leaf mottling than the triazines. Symptoms of injury from herbicides in the triazine and ureas groups are similar and are difficult to separate. |
| 1440077 | Damage | Preplant incorporated herbicides, such as dinitroanalines, may cause injury to tobacco when they are improperly applied or not uniformly incorporated. Typical injury symptoms include seriously pruned root systems which result in stunted root growth and irregular field appearance. Affected plants exhibit a deficiency of feeder roots in the zone of herbicide incorporation. Most secondary and feeder roots terminate in blunt knob-like tips. Injury is also more common when cool wet weather persists after transplanting, or when excessively high rates of herbicides are used. |
| 1440078 | Damage | Phenoxy herbicides such as 2,4-D, dicamba, and MCPA on tobacco cause symptoms which vary with the herbicide rate and the age of the affected plants. Young leaves become stiff, puckered, elongated, and often have serrated edges. Midribs of affected leaves are prominent and may extend as a pointed needle-like projection or tail at the end of the leaf. Higher dosages cause the leaves to be "strappy" in appearance. High rates may also cause extensive twisting of stalks and leaf petioles. On older plants, leaf margins will curl downward, and the midrib will bend downward. |
| 1440079 | Damage | Phenoxy herbicides such as 2,4-D, dicamba, and MCPA on tobacco cause symptoms which vary with the herbicide rate and the age of the affected plants. Young leaves become stiff, puckered, elongated, and often have serrated edges. Midribs of affected leaves are prominent and may extend as a pointed needle-like projection or tail at the end of the leaf. Higher dosages cause the leaves to be "strappy" in appearance. High rates may also cause extensive twisting of stalks and leaf petioles. On older plants, leaf margins will curl downward, and the midrib will bend downward. |
| 1440080 | Damage | Tobacco is extremely sensitive to picloram and very small amounts from drift, contaminated equipment, or residue in the soil will cause serious injury. The most common symptom is a downward curling of the margins and tips of the leaf. The curl of the tip results in "parrott beak" or hooded appearance. Symptoms appear first on young growing leaves, but due to the persistence of the compound, it will continue to affect the new bud leaves. New leaves may take on a heart-shaped appearance as the midrib is stunted, while the adjoining tissue continues to grow. Higher rates of picloram result in thick, strappy, elongated older leaves and elongated or aborted bud leaves. Young leaves may also have a wide thick midrib with little or no adjoining leaf tissue. Picloram residues may persist in the soil and cause damage to tobacco for periods of three or more years after application. |
| 1440081 | Damage | Tobacco is extremely sensitive to picloram and very small amounts from drift, contaminated equipment, or residue in the soil will cause serious injury. The most common symptom is a downward curling of the margins and tips of the leaf. The curl of the tip results in "parrott beak" or hooded appearance. Symptoms appear first on young growing leaves, but due to the persistence of the compound, it will continue to affect the new bud leaves. New leaves may take on a heart-shaped appearance as the midrib is stunted, while the adjoining tissue continues to grow. Higher rates of picloram result in thick, strappy, elongated older leaves and elongated or aborted bud leaves. Young leaves may also have a wide thick midrib with little or no adjoining leaf tissue. Picloram residues may persist in the soil and cause damage to tobacco for periods of three or more years after application. |
| 1440082 | Damage | Glyphosate is a systematic herbicide that causes damage to tobacco within five to seven days after exposure. Injury first appears as a light yellow discoloration in the newly developing leaves. The leaf color changes from green to pale yellow and/or white from the base of the leaf to the tip. After exposure, newly formed leaves will be narrow and margins will be curled downward. Symptoms on mature leaves consist of areas of yellow or brown tissue between the veins while the remainder of the leaf looks normal. The yellow or brown interveinal area will frequently die and fall out leaving a shot- hole appearance. Higher exposure rates will cause death of the plant in seven to fourteen days after symptoms appear. |
| 1440083 | Damage | Exposure of tobacco to contact herbicides such as paraquat and dinoseb causes white lesions on leaves and stems. The lesions turn brown and may fall out, leaving holes in the leaf. Low levels of exposure produce distinct individual lesions. At higher exposure levels, the lesions combine, causing the leaves to yellow and areas between the veins to die and fall out. If the plant does not die from the exposure, later growth will be normal. Weather fleck, contact injury by other herbicides, and some types of chemicals produce similar symptoms. |
| 1458059 | Damage | chemical injury |
| 1458069 | Damage | |
| 1459885 | Equipment | Graslan applicator |
| 1459886 | Equipment | Aerial applicaiton |
| 1459887 | Equipment | Wick wiper for rye |
| 1459888 | Equipment | Wick wiper for rye |
| 1459889 | Equipment | Wick wiper for rye |
| 1459890 | Equipment | |
| 1459891 | Equipment | ATV Sprayer |
| 1459893 | Equipment | |
| 1459894 | Equipment | Hand applicator |
| 1459895 | Equipment | Solo granular air-blast applicator |
| 1459896 | Equipment | |
| 1459897 | Equipment | |
| 1459898 | Application | "Hack & Squirt" or Injection application |
| 1459899 | Application | "Hack & Squirt" or Injection application |
| 1459901 | Equipment | Aerial application |
| 1459903 | Equipment | Aerial application |
| 1459904 | Equipment | Horseback duster |
| 1467004 | Damage | atrazine |
| 1467039 | Damage | September 1959 |
| 1467042 | Damage | 2,4D; drift from sagebrush spraying |
| 1467206 | Damage | from root translocation of herbicide |
| 1467207 | Damage | close up from picture 1467206; ridge created when damaged area is blocked off |
| 1467208 | Damage | banding caused by amino-trizol |
| 1467209 | Damage | 2,4D / 245T damage |
| 1467210 | Damage | close up of 1467209; discoloration, curl, and chlorosis |
| 1467211 | Damage | caused by sterilizing ground under fence around powerpole by substation |
| 1467212 | Damage | caused by soil sterilant applied around sign post to prevent grass growth |
| 1467215 | Damage | caused by soil sterilant applied along a fence across the street |
| 1467216 | Damage | close up of 1467216; soil sterilant damage |
| 1492111 | Damage | Paraquat creating a donut shaped canker |
| 1492112 | Damage | |
| 1492114 | Symptoms | Paraquat injury creating a donut shaped canker |
| 1492115 | Damage | Peach- Herbicide damage |
| 1492117 | Symptoms | Paraquat injury |
| 1496242 | Symptoms | Paraquat injury on apple |
| 1506045 | Diagram or Graphic | Art - Translocation up & down - tree injection |
| 1508092 | Field | Velpar L release - 1 gpa soil spot |
| 1508093 | Field | Velpar L release - 1 gpa soil spot |
| 1508094 | Field | Velpar L release - 1 gpa soil spot |
| 1508096 | Field | Arsenal; 6oz/ac 2-0 lob seedl (treat 1985) |
| 1508097 | Field | Arsenal; 6oz/ac 2-0 lob seedl (treat 1985) |
| 1508098 | Field | Arsenal; 6oz/ac 2-0 lob seedl (treat 1985) |
| 1509019 | Equipment | Unusual herbicide sprayer |
| 1509022 | Damage | Atrazine kill; cemetary |
| 1509023 | Damage | Atrazine burn; cemetary |
| 1509024 | Damage | Atrazine kill; cemetary |
| 1509025 | Damage | Atrazine burn; cemetary |
| 1509026 | Damage | Atrazine burn; cemetary |
| 1509027 | Demonstration | Atrazine use - headstone grass control |
| 1509044 | Product | Herbicide containers |
| 1509049 | Product | Velpar gridball |
| 1509050 | Product | Velpar gridballs (2cc) |
| 1509055 | Demonstration | Loading injector bar with herbicide |
| 1509056 | Demonstration | Safer loading injector bar with herbicide |
| 1509057 | Demonstration | Injector crew spaced to enter woods |
| 1509058 | Demonstration | Business end of injector (chisel tip & valve) |
| 1509059 | Demonstration | Kranko injector in use |
| 1509060 | Demonstration | Stabbing tree with injector |
| 1509061 | Demonstration | Carrying injector between trees |
| 1509062 | Demonstration | Loading injector barrel |
| 1509071 | Demonstration | Foliar spraying to release |
| 1511008 | Application | Hack 'n squirt herbicide application |
| 1511012 | Application | Hypohatchet herbicide application |
| 1511013 | Demonstration | Injector bar herbicide application |
| 1512008 | Diagram or Graphic | Art - Multiple interrpretations of a project |
| 1514040 | Equipment | |
| 1514042 | Equipment | |
| 1514044 | Equipment | |
| 1514045 | Equipment | |
| 1514046 | Equipment | |
| 1514047 | Demonstration | herbicide application with hatchet and spray bottle |
| 1514048 | Demonstration | after herbicide application with a hatchet |
| 1514049 | Demonstration | after herbicide application with hatchet |
| 1520056 | Diagram or Graphic | fate of herbicides |
| 1524106 | Damage | Paraquat damage on corn |
| 1524107 | Damage | Paraquat damage on corn |
| 1525701 | Symptoms | Herbicide injury |
| 1673070 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673071 | Equipment | helicopter and spray truck for aerial application |
| 1673072 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673073 | Equipment | helicopter and spray truck for aerial application |
| 1673074 | Equipment | helicopter and spray truck for aerial application |
| 1673075 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673076 | Equipment | helicopter and spray truck for aerial application |
| 1673077 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673078 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673079 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673080 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673081 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673082 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673083 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 1673084 | Equipment | helicopter for aerial application |
| 1673085 | Equipment | helicopter for aerial application |
| 1673089 | Equipment | helicopter and spray truck for aerial application |
| 1673090 | Equipment | helicopter and spray truck for aerial application |
| 1673091 | Equipment | helicopter and spray truck for aerial application |
| 1673092 | Equipment | helicopter for aerial application |
| 1673093 | Equipment | helicopter for aerial application |
| 1673094 | Management | pine release treatment on ten year old slash pine with Velpar in Tifton Georgia |
| 2147051 | Restoration | Restoration using selective herbicides |
| 2155067 | Equipment | |
| 2155068 | Equipment | |
| 2307257 | Application | A spray sheild fashioned from a used gallon milk jug (bottom and cap bored.) |
| 2307259 | Equipment | Higher spray heights achieved with narrow- angled nozzle, wand extension, and higher pressure. |
| 2307260 | Application | Stem injection |
| 2307261 | Application | Stem injection using hatchet and spray bottle for hack-and-squirt. |
| 2307262 | Application | Stem injection using a tree injector. |
| 2307263 | Application | Cut-treat the circumference of large stems. |
| 2307264 | Application | Cut-treat the entire top of small stems. |
| 2307265 | Application | Basal sprays applied by spray gun and straight-stem nozzle to low stem. |
| 2307266 | Application | Basal spray mixture applied by a wick applicator to safegaurd nearby plants. |
| 2307267 | Application | Soil spots applied as metered herbicide amounts to the soil surface. |
| 2651018 | Equipment | Liquid herbicide application with 4-wheeler. Tom Doody, Dodge County Georgia |
| 2651019 | Equipment | 4-wheeler setup for liquid herbicide application |
| 2714010 | Control | Herbicide treatment on young Douglas-fir stand |
| 3046081 | Damage | damage caused by 2,4-D |
| 3046082 | Damage | Clomazone damage |
| 3046087 | Damage | Clomazone damage |
| 3046088 | Damage | stem swelling caused by phenoxy 2,4-D |
| 3046089 | Damage | stem swelling caused by phenoxy 2,4-D |
| 3046100 | Damage | Triclopyr (rice herbicide) damage to plantation adjacent to rice field |
| 3047001 | Damage | Triclopyr (rice herbicide) damage |
| 3047002 | Damage | Triclopyr (rice herbicide) damage to tree adjacent to rice field |
| 4214056 | Damage | curled shoots |
| 4214057 | Damage | distorted and chlorotic leaves |
| 4214058 | Damage | distorted leaves |
| 4214059 | Damage | 2,4-D damage: distorted red pine needles |
| 4214060 | Damage | red pine needle droop |
| 4214061 | Damage | curled and bark jack pine shoots |
| 4214062 | Damage | curled jack pine shoots |
| 4544067 | Damage | glyphosate |
| 4544068 | Damage | dichlobenil |
| 4798071 | Stand | plantation established on chemically site prepared area |
| 4798072 | Management | mist-blower application of 2,4-5T for hardwood control in 1971 |
| 4798073 | Equipment | Hypo hatchet |
| 4798074 | Equipment | backpack mist-blower |
| 4798076 | Equipment | Heliocopter with herbicide spray boom |
| 4799009 | Stand | Site was chemically site prepared and hand planted. |
| 4799050 | Control | Preemergence application of Goal and Gramoxone before bud-break (6' band) in Fitler, Mississippi |
| 4799051 | Control | Basal spray application Goal mid-growing season (cottonwoods 4 months old) |
| 4800026 | Control | Four-year old loblolly pine planted under post oak (Q. stellata) and black jack oak (Q. marilandica) stand that was injected with herbicide. Latimer county, Oklahoma |
| 4911018 | Equipment | Skid Mounted Spray Rig |
| 4911020 | Equipment | Cluster Nozzle |
| 4911021 | Treatment | Glyphosate on Hardwood Understory; Nicolet N.F., |
| 4911022 | Treatment | Velpar L Release on Rubus, Salix, & Sweet Fern; Nicolet N.F., |
| 4911025 | Treatment | Spraying Hardwood Understory with Glyphosate; Nicolet N.F., |
| 4911027 | Equipment | Skidder Mounted Spray Rig; Nicolet N.F., |
| 4911028 | Equipment | Skid-Mounted Pump |
| 4911035 | People | use of an eyewash bottle |
| 5034027 | Damage | herbicide around tree base |
| 5048013 | Damage | atrazine (herbicide) |
| 5053067 | Damage | |
| 5053068 | Damage | |
| 5053069 | Damage | |
| 5053071 | Damage | |
| 5053073 | Damage | |
| 5053074 | Damage | herbicide damage on turf |
| 5076086 | Damage | Dinitroanaline Herbicide Injury on Watermelon Often occurs when applied preceding a heavy rainfall. Symptoms include swelling and splitting of the lower stem area. Wilting and plant death occur later in the season when high temperatures and heavy fruit load stress the plant. |
| 5077013 | Symptoms | Soft, mushy, spots on the fruit. May not show up until the fruit has been in storage or on display. |
| 5077014 | Damage | Paraquat herbicide injury on squash; Off target drift. Small, round white spots that appear burned. New leaves will be free of injury, but fruit are unmarketable. |
| 5077027 | Damage | Alachlor injury; Off-target drift. Bud area turns yellow with interveinal chlorosis. Bottom leaves will burn off. Plant will remain stunted during the growing season. |
| 5077028 | Symptoms | Imazapic herbicide carryover; plant is stunted and exhibits purpling leaves which are often strapped. Plant forms multiple heads from auxiliary buds. |
| 5077038 | Damage | Clomazone herbicide injury on collards; Off-target drift. Tissue turns yellow or white depending on concentration. |
| 5077039 | Damage | Chlorimuron herbicide carryover on mustard; Plant germinates and emerges but is severly stunted. |
| 5077050 | Damage | Glyphosate herbicide injury on tomato; Characteristic yellowing in the bud area. Very small amounts can cause injury on tomatoes. Higher concentrations will kill plant. |
| 5077060 | Symptoms | 2,4-D type herbicide injury; Distorted leaves with characteristic "squiggly" mid rib in leaf. Leaves may drop. Could be confused with broadmite injury. |
| 5077067 | Damage | 2,4-D Herbicide Injury on Eggplant; Leaf is distorted and elongated. May or may not grow out of this injury. |
| 5331065 | Damage | growth regulator injury (2,4-D) |
| 5332019 | Damage | Surflan injury |
| 5332020 | Damage | Surflan injury |
| 5332033 | Damage | Eradicane injury |
| 5332034 | Damage | |
| 5333025 | Treatment | Roundup Spot Treatment to mark corner of plot/Rutgers |
| 5333027 | Treatment | Roundup treatment to prepare bed for ornamental planting |
| 5333034 | Damage | Sencor injury on cantaloupe |
| 5333035 | Damage | Sencor injury on cantaloupe |
| 5333083 | Damage | glyphosate injury |
| 5333084 | Damage | 2,4 D injury |
| 5334015 | Damage | growth regulator injury |
| 5335094 | Damage | 2,4-D injury |
| 5335095 | Damage | 2,4-D injury |
| 5335096 | Damage | 2,4-D injury |
| 5337037 | Symptoms | injury from glyphosate (Roundup) application the previous fall |
| 5356825 | Damage | Simazine (a herbicide) injury to leaves of apricot trees. |
| 5357153 | Damage | Damage to a pinto bean plant resulting from the use of clopyralid herbicide. |
| 5357154 | Damage | Damage to pinto bean plants from use of clopyralid herbicide. |
| 5357155 | Damage | Damage to leaves of pinto bean plants caused by clopyralid herbicide. |
| 5357156 | Damage | Damage to pinto bean plant and pods, caused by use of clopyralid herbicide. |
| 5357157 | Damage | Damage to pods of pinto beans resulting from the use of clopyralid herbicide. |
| 5357158 | Damage | Damage to the roots of a pinto bean plant, resulting from the use of clopyralid. |
| 5357159 | Damage | Damage to the roots of a pinto bean plant caused by use of a clopyralid herbicide. |
| 5357160 | Damage | Kidney bean leaves showing damage from use of Assure herbicide and crop oil. |
| 5357161 | Damage | Kidney bean leaves showing damage from use of Assure herbicide and crop oil to control volunteer corn. |
| 5357162 | Damage | Kidney bean leaves showing damage from use of Assure herbicide and crop oil. |
| 5357163 | Damage | Kidney bean leaves showing damage from use of Assure herbicide and crop oil. |
| 5357164 | Damage | Kidney bean leaves showing damage from use of Assure herbicide and crop oil. |
| 5357165 | Damage | Kidney bean leaves showing damage from use of Assure herbicide and crop oil. |
| 5357649 | Damage | Clopyralid herbicide damage to a field of pinto beans. |
| 5357650 | Damage | Damage to a field of pinto beans from spraying adjacent weeds with clopyralid. |
| 5357651 | Damage | Damage to pinto bean plants from use of clopyralid herbicide. |
| 5357652 | Damage | Damage to pinto bean plants from use of clopyralid herbicide. |
| 5358970 | Damage | Loss of dry bean plants due to residual carryover of applied herbicide. |
| 5358976 | Damage | Herbicide carryover effects in dry beans. |
| 5358978 | Damage | Damage to dry beans due to herbicide carryover. |
| 5359039 | Damage | Damage to a potato field due to herbicide (Stinger or Curtail) carry over. |
| 5359040 | Damage | Damage to a potato field due to herbicide (Stinger or Curtail) carry over. |
| 5359041 | Damage | Damage to a potato field due to herbicide (Stinger or Curtail) carry over. |
| 5359042 | Damage | Damage to a potato field due to herbicide (Stinger or Curtail) carry over. |
| 5359043 | Damage | Damage to a potato plant due to herbicide (Stinger or Curtail) carry over. |
| 5359044 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359045 | Damage | Damage to a potato plant due to herbicide (Stinger or Curtail) carry over. |
| 5359046 | Damage | Damage to a potato plant due to herbicide (Stinger or Curtail) carry over. |
| 5359047 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359048 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359049 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359050 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359051 | Damage | Damage to a potato plant due to herbicide (Stinger or Curtail) carry over. |
| 5359052 | Damage | Damage to a potato plant due to herbicide (Stinger or Curtail) carry over. |
| 5359053 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359054 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359055 | Damage | Damage to potato plants due to herbicide (Stinger or Curtail) carry over. |
| 5359770 | Damage | Herbicide damage to an onion plant in the field. |
| 5359771 | Damage | Herbicide damage to an onion plant in the field. |
| 5359772 | Damage | Herbicide damage to an onion planst in the field. |
| 5361119 | Symptoms | A cowpea (black-eyed pea/southern pea) plant with an abiotic disorder due to Phenoxy herbicide damage in the field. |
| 5362262 | Damage | Herbicide damage (chlorosis) on onion leaf, Abiotic disease, Pesticide damage |
| 5362629 | Research | An onion field with some plants showing leaf curling resulting from herbicide damage. |
| 5362630 | Research | An onion field with some plants showing leaf curling resulting from herbicide damage. |
| 5364331 | Damage | A scenic view of herbicide (phenoxy) damage to a snap bean field. |
| 5364332 | Damage | A scenic view of herbicide (phenoxy) damage to a snap bean field. |
| 5364557 | Research | Herbicide damage to onion plants on the field. |
| 5364558 | Research | Herbicide damage to onion plants on the field. |
| 5368411 | Symptoms | Petunia shows root proliferation. Growth regulator injury |
| 5368412 | Symptoms | Petunia shows root proliferation. Growth regulator injury |
| 5368413 | Symptoms | Petunia shows root proliferation.Growth regulator injury |
| 5368414 | Symptoms | Petunia shows root proliferation. Growth regulator injury |
| 5368419 | Symptoms | Marigold shows stem galling from growth regulator injury. |
| 5368420 | Symptoms | Marigold shows stem galling from growth regulator injury. |
| 5368421 | Symptoms | Marigold shows stem galling from growth regulator injury. |
| 5368422 | Symptoms | Marigold shows stem galling from growth regulator injury. |
| 5368553 | Symptoms | glyphosate injury: new leaf growth is long, narrow with a lack of green color |
| 5368554 | Symptoms | glyphosate injury: new leaf growth is long, narrow with a lack of green color |
| 5368555 | Symptoms | glyphosate injury: new leaf growth is long, narrow with a lack of green color |
| 5368556 | Symptoms | glyphosate injury: new leaf growth is long, narrow with a lack of green color |
| 5368575 | Symptoms | Yellowing of youngest leaves from their base. (glyphosate injury) |
| 5368576 | Symptoms | Yellowing of youngest leaves from their base from glyphosate injury |
| 5368577 | Symptoms | Yellowing of youngest leaves from their base from glyphosate injury |
| 5368578 | Symptoms | Yellowing of youngest leaves from their base from glyphosate injury |
| 5368582 | Symptoms | Symptoms appear first on young growing leaves, but due to the persistence of the compound, it will continue to affect the new bud leaves. `Picloram' residues may persist in the soil and cause damage to tobacco for periods of three or more years after appl |
| 5368583 | Symptoms | Symptoms appear first on young growing leaves, but due to the persistence of the compound, it will continue to affect the new bud leaves. `Picloram' residues may persist in the soil and cause damage to tobacco for periods of three or more years after appl |
| 5368584 | Symptoms | Symptoms appear first on young growing leaves, but due to the persistence of the compound, it will continue to affect the new bud leaves. `Picloram' residues may persist in the soil and cause damage to tobacco for periods of three or more years after appl |
| 5368585 | Symptoms | Symptoms appear first on young growing leaves, but due to the persistence of the compound, it will continue to affect the new bud leaves. `Picloram' residues may persist in the soil and cause damage to tobacco for periods of three or more years after appl |
| 5368619 | Symptoms | Yellowing of the youngest leaves from their base. Glyphosate injury. |
| 5368620 | Symptoms | Yellowing of the youngest leaves from their base. Glyphosate injury |
| 5368621 | Symptoms | Yellowing of the youngest leaves from their base. Glyphosate injury |
| 5368635 | Symptoms | Injury symptoms at later stages with tissue death, turning brown. Glyphosate injury. |
| 5368636 | Symptoms | Injury symptoms at later stages with tissue death, turning brown, concentrated in the younger growth. Glyphosate injury. |
| 5368637 | Symptoms | Individual leaflet with later stages of injury at base. Tissue tested negative for TSWV and INSV. Glyphosate injury. |
| 5368638 | Symptoms | Individual leaflet with later stages of injury at base. Tissue tested negative for TSWV and INSV. Glyphosate injury. |
| 5368686 | Symptoms | leaves are disorted with veins becoming parallel. Leaf tips are elongated. Growth regulator injury |
| 5368687 | Symptoms | leaves are disorted with veins becoming parallel. Leaf tips are elongated. Growth regulator injury |
| 5368688 | Symptoms | leaves are disorted with veins becoming parallel. Leaf tips are elongated. Growth regulator injury |
| 5368689 | Symptoms | Yellowing of major veins starting at the base. Older leaves show injury before younger ones. Triazine injury |
| 5368690 | Symptoms | Yellowing of major veins starting at the base. Older leaves show injury before younger ones. Triazine injury. |
| 5368691 | Symptoms | Yellowing of major veins starting at the base. Older leaves show injury before younger ones. Triazine injury. |
| 5368692 | Symptoms | Yellowing of major veins starting at the base. Older leaves show injury before younger ones. Triazine injury. |
| 5368701 | Symptoms | Actively growing tissue is more affected. Leaves narrow with wavy margins and elongated tips. growth regulator injury |
| 5368702 | Symptoms | Youngest growth showing stunting, curling, and narrowing of leaves. Growth regulator injury. |
| 5368711 | Symptoms | Yellowing of the youngest leaves from their base; glyphosate injury |
| 5368712 | Symptoms | Yellowing of the youngest leaves from their base; glyphosate injury |
| 5368739 | Symptoms | Initial injury symptom in the field of white/yellow tissue at base of leaflets in youngest growth. glyphosate injury. |
| 5368740 | Symptoms | Initial injury symptom in the field of white/yellow tissue at base of leaflets in youngest growth. Glyphosate injury. |
| 5368741 | Symptoms | Initial injury symptom in the field of white/yellow tissue at base of leaflets. Glyphosate injury. |
| 5368767 | Symptoms | The main symptom is the producion of heart-shaped leaves. In this case we believed this was a sprayer contamination issue. Acetamide injury |
| 5368768 | Symptoms | The main symptom is the producion of heart-shaped leaves. In this case we believed this was a sprayer contamination issue. Acetamide injury |
| 5368769 | Symptoms | The main symptom is the producion of heart-shaped leaves. In this case we believed this was a sprayer contamination issue. Acetamide injury |
| 5368770 | Symptoms | The main symptom is the producion of heart-shaped leaves. In this case we believed this was a sprayer contamination issue. Acetamide injury. |
| 5368771 | Symptoms | The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable. |
| 5368772 | Symptoms | The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable. |
| 5368773 | Symptoms | The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable. |
| 5368774 | Symptoms | The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable. |
| 5368800 | Symptoms | Plants from greenhouse where prometon-containing herbicide (Pramitol) was used on gravel under benches. |
| 5368801 | Symptoms | Typical triazine herbicide injury symptoms with older leaves showing symptoms first and leaf tissue along the margins injured. |
| 5368802 | Symptoms | Typical triazine herbicide injury symptoms with older leaves showing symptoms first and leaf tissue along the margins injured. |
| 5368803 | Symptoms | Typical triazine herbicide injury symptoms with older leaves showing symptoms first and leaf tissue along the margins injured. |
| 5368835 | Symptoms | All the younger leaves in the sample showed symptoms of severe growth regulator (i.e. phenoxy herbicides, e.g. 2,4-d) injury; curling, cupping, elongated tips or margins, and scalloped margins. |
| 5368836 | Symptoms | All the younger leaves in the sample showed symptoms of severe growth regulator (i.e. phenoxy herbicides, e.g. 2,4-d) injury; curling, cupping, elongated tips or margins, and scalloped margins. |
| 5368837 | Symptoms | All the younger leaves in the sample showed symptoms of severe growth regulator (i.e. phenoxy herbicides, e.g. 2,4-d) injury; curling, cupping, elongated tips or margins, and scalloped margins. |
| 5368853 | Symptoms | Assure II injury. Progression of symptoms from bleaching, reddening, then browning in blotchy to broad areas on the leaves. |
| 5368854 | Symptoms | Assure II injury. Progression of symptoms from bleaching, reddening, then browning in blotchy to broad areas on the leaves. |
| 5368855 | Symptoms | Assure II injury. Progression of symptoms from bleaching, reddening, then browning in blotchy to broad areas on the leaves. |
| 5368856 | Symptoms | Assure II injury. Progression of symptoms from bleaching, reddening, then browning in blotchy to broad areas on the leaves. |
| 5368933 | Symptoms | Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide. |
| 5368934 | Symptoms | Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide. |
| 5368935 | Symptoms | Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide. |
| 5368936 | Symptoms | Starting with the oldest leaves on the tree, the leaves will first turn a yellow/light green color followed by browning and death of the tissue along the margins of the leaves. “Pramitol" (`prometon'), which is commonly used under asphalt, can cause these symptoms and is a type of triazine herbicide. |
| 5372716 | Symptoms | |
| 5372718 | Symptoms | |
| 5389480 | Damage | Sampling of dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389481 | Damage | Sampling of dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389482 | Damage | Sampling of dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389483 | Damage | Sampling of dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389484 | Damage | Sampling of dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389485 | Damage | Sampling of dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389486 | Damage | Sampling of dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389487 | Damage | A dry bean field used for herbicide damage research at Colorado, USA. |
| 5389488 | Damage | A dry bean plot used for herbicide damage research at Colorado, USA. |
| 5389489 | Damage | A dry bean plot used for herbicide damage research at Colorado, USA. |
| 5389490 | Symptoms | Dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389491 | Symptoms | Dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389492 | Symptoms | Dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5389493 | Symptoms | Dry bean leaves showing chlorotic symptoms of herbicide damage. |
| 5392914 | Damage | Beginning to show signs of herbicide damage while under mulch. Note cupping of leaves |
| 5393287 | Damage | Hop cones showing quinclorac herbicide injury on a field at Oregon. |
| 5393288 | Damage | Quinclorac herbicide injury to a hop cone and leaves. |
| 5393289 | Damage | Quinclorac herbicide injury to hop leaves. |
| 5393290 | Damage | Quinclorac herbicide injury to hop cone and leaves. |
| 5393291 | Damage | Quinclorac herbicide injury to hop cone and leaves. |
| 5393292 | Damage | Quinclorac herbicide injury to hop cone and leaves. |
| 5393293 | Damage | Quinclorac herbicide injury to hop cone and leaves. |
| 5393294 | Damage | Quinclorac herbicide injury to hop cone and leaves. |
| 5393295 | Damage | Quinclorac herbicide injury to hop cone and leaves. |
| 5393296 | Damage | Quinclorac herbicide injury to hop foliage on a field at Oregon. |
| 5393297 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393298 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393299 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393300 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393301 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393302 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393303 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393304 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393305 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393306 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393307 | Damage | Quinclorac herbicide injury to hop cones on a field at Oregon. |
| 5393308 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393309 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393310 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393311 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393312 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393313 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393314 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393315 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393316 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393317 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393318 | Damage | Quinclorac herbicide injury to hop plants on a field at Oregon. |
| 5393319 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393320 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393321 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393322 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393323 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393331 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393332 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393333 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393334 | Damage | Carfentrazone herbicide injury to a hop plant. |
| 5393355 | Damage | EPTC and hail damage |
| 5393366 | Damage | phenoxy herbicide damage |
| 5393367 | Damage | phenoxy herbicide damage |
| 5393368 | Damage | phenoxy herbicide damage |
| 5393975 | Damage | Carfentrazone herbicide injury to hop leaves on a field at Oregon. |
| 5393976 | Damage | Carfentrazone herbicide injury to hop leaves on a field at Oregon. |
| 5393977 | Damage | Carfentrazone herbicide injury to hop leaves on a field at Oregon. |
| 5395005 | Damage | Clomazone |
| 5395006 | Damage | Clomazone |
| 5395007 | Damage | Clomazone |
| 5395008 | Damage | Clomazone |
| 5395009 | Damage | Clomazone |
