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Howard F. Schwartz's Images

Title: Professor of Plant Pathology & Assoc. Dept. Head
Organization: Colorado State University
Unit: Plant Pathology
Country: United States
Web: http://www.alliumnet.com/index.htm
Professional Societies:

Howard F. Schwartz is a Professor of Plant Pathology & Associate Department Head in the Department of Bioagricultural Sciences and Pest Management at Colorado State University. His Research and Extension Interests include Integrated Pest Management (IPM) - particularly of rust and white mold of dry bean as well as bacterial diseases and Iris Yellow Spot Virus of onion. Specific areas include management by disease survey, a reporting network supported by GPS/GIS technology, disease resistance, cultural practices, and timely applications of pesticides in response to environmental monitoring and crop/pest modeling. He is also interested in making sure the delivery of time-sensitive information on Integrated Pest Management and Crop Production Systems is coordinated via traditional methods (newsletters, bulletins, alerts, meetings, field days) and via the internet (Legume Pipe, VegNet, Allium Net). He is also the person leading and coordinating the CSU Node of the Bugwood Network.


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Image Subject Name Scientific Name Description
5362242 garden onion Allium cepa People, Transplant onion harvest
5443434 garden onion Allium cepa Growth Stage 8
5443427 garden onion Allium cepa Growth Stage 10
5443428 garden onion Allium cepa Growth Stage 2
5443429 garden onion Allium cepa Growth Stage 3
5443430 garden onion Allium cepa Growth Stage 4
5443431 garden onion Allium cepa Growth Stage 5
5443432 garden onion Allium cepa Growth Stage 6
5443433 garden onion Allium cepa Growth Stage 7
5443426 garden onion Allium cepa Growth Stage 1
5443435 garden onion Allium cepa Growth Stage 9
5360659 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5360660 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5360654 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5360655 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5360656 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5360657 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5360658 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5360653 garden onion Allium cepa A collection of some vegetables including white, yellow and red onions.
5389454 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5393084 garden onion Allium cepa Poor emergence of onion seedlings due to high soil salinity and crusting.
5393083 garden onion Allium cepa Poor emergence of onion seedlings due to high soil salinity and crusting.
5393081 garden onion Allium cepa Poor emergence of onion seedlings due to high soil salinity and crusting.
5393082 garden onion Allium cepa Poor emergence of onion seedlings due to high soil salinity and crusting.
5393080 garden onion Allium cepa Poor emergence of onion seedlings due to high soil salinity and crusting.
5389457 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389458 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389455 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389456 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389453 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389452 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389450 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389451 garden onion Allium cepa Straw mulch applied on to onion plots as part of an onion thrips management research on a field at Colorado, USA.
5389445 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389446 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389444 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389442 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389443 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389441 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389440 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389438 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389439 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389437 garden onion Allium cepa Straw mulch applied onto an onion field as part of onion thrips management research at Colorado, USA.
5389435 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389436 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389433 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389434 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389431 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389432 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389429 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389430 garden onion Allium cepa A cultivator in operation on an onion field at Colorado, USA
5389427 garden onion Allium cepa A cultivator in operation on an onion field in Colorado, USA.
5389425 garden onion Allium cepa An untreated onion plot used in an onion thrips management research at Colorado, USA.
5389420 garden onion Allium cepa Poor emergence of onion seedlings due to high soil salinity and crusting.
5389419 garden onion Allium cepa A post-emergence death of an onion seedling due to soil crusting.
5389417 garden onion Allium cepa A post-emergence death of an onion seedling due to soil crusting.
5389418 garden onion Allium cepa A post-emergence death of an onion seedling due to soil crusting.
5389416 garden onion Allium cepa A post-emergence death of an onion seedling due to soil crusting.
5389415 garden onion Allium cepa A post-emergence death of an onion seedling due to soil crusting.
5389413 garden onion Allium cepa A post-emergence death of an onion seedling due to soil crusting.
5389414 garden onion Allium cepa A post-emergence death of an onion seedling due to soil crusting.
5389412 garden onion Allium cepa A onion seedling on a crusted field at Colorado, USA.
5389411 garden onion Allium cepa A onion seedling on a crusted field at Colorado, USA.
5389410 garden onion Allium cepa An onion transplanter in use on a field at Colorado, USA.
5389409 garden onion Allium cepa An onion transplanter in use on a field at Colorado, USA.
5389407 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389408 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389406 garden onion Allium cepa The wheel of an onion transplanter in use on a field at Colorado, USA.
5389405 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389403 garden onion Allium cepa Newly transplanted onion plants on a field at Colorado, USA.
5389404 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389402 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389401 garden onion Allium cepa An onion transplanter in use on a field at Colorado, USA.
5389400 garden onion Allium cepa An onion transplanter in use on a field at Colorado, USA.
5389397 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389398 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389396 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5389395 garden onion Allium cepa Workers transplanting onions on a field at Colorado, USA.
5360603 garden onion Allium cepa An onion top-roller attached to a tractor in the field.
5357332 garden onion Allium cepa Yellow onions
5359975 garden onion Allium cepa Onion bulbs cut open to reveal damage created by bruising during handling.
5361083 garden onion Allium cepa A scenic view of onion harvesting in the field.
5362719 onions Allium spp. onion fieldat Delta, Colorado
5359810 garden onion Allium cepa A tractor with an attached undercutter used for onion harvesting in the field.
5359809 garden onion Allium cepa A tractor with an attached undercutter used for onion harvesting in the field.
5359808 garden onion Allium cepa A tractor with an attached undercutter used for onion harvesting in the field.
5359807 garden onion Allium cepa A drip irrigation system in use on an onion field near Rocky Ford in Colorado.
5360602 garden onion Allium cepa An onion top-roller attached to a tractor in the field.
5360562 garden onion Allium cepa A center-pivot irrigation system in use on an onion field.
5360561 garden onion Allium cepa A center-pivot irrigation system in use on an onion field.
5362391 garden onion Allium cepa An undercutting equipment used for onion field harvesting.
5362254 garden onion Allium cepa Disked onion plants on a field in Colorado.
5365863 garden onion Allium cepa A furrow irrigated onion field.
5361580 garden onion Allium cepa A soil moisture tensiometer in an onion field.
5364555 garden onion Allium cepa A tractor cultivating an onion field in Colorado.
5364554 garden onion Allium cepa A tractor cultivating an onion field in Colorado.
5364553 garden onion Allium cepa A tractor cultivating an onion field in Colorado.
5364448 garden onion Allium cepa Harvesters used for field harvesting of onions.
5364447 garden onion Allium cepa Harvesters used for field harvesting of onions.
5364415 cultivated garlic Allium sativum Garlic cloves during a seed quality inspection exercise.
5364396 garden onion Allium cepa Raw garden onion seeds during a seed quality inspection exercise.
5364395 chives Allium schoenoprasum Seeds of chives during a seed quality evaluation exercise.
5363735 garden onion Allium cepa A field of onion plants under a furrow irrigation system.
5363734 garden onion Allium cepa A field of onion plants under a furrow irrigation system.
5362654 garden onion Allium cepa A tractor undercutting onion transplants in the field during a harvesting operation.
5362652 garden onion Allium cepa A field of young onion plants under a center pivot irrigation system.
5363605 garden onion Allium cepa Undercut onions on the field during a harvesting operation.
5363603 garden onion Allium cepa Undercut onions on the field during a harvesting operation.
5363604 garden onion Allium cepa Undercut onions on the field during a harvesting operation.
5364054 garden onion Allium cepa An tractor used for soil fumigation operations in the field.
5362653 garden onion Allium cepa A tractor used for undercutting onion transplants in the field.
5362651 garden onion Allium cepa A field of young onion plants under a center pivot irrigation system.
5357633 chives Allium schoenoprasum Chives in full bloom in a garden.
5358498 yucca Yucca spp. A yucca plant (Yucca spp.) at the Phoenix Botanical Garden in Arizona.
5358497 yucca Yucca spp. A yucca plant (Yucca spp.) at the Phoenix Botanical Garden in Arizona.
5362056 iris Iris spp. Irish plants growing in the field.
5362058 iris Iris spp. Irish plants growing in the field.
5367362 agave Agave spp. Agave plants in bloom in the field.
5366433 agave Agave spp. Lechuguilla (Agave lechuguilla) plants at the Phoenix Botanical Gardens in Arizona.
5366434 agave Agave spp. Lechuguilla (Agave lechuguilla) plants at the Phoenix Botanical Gardens in Arizona.
5366400 aloe Aloe spp. Aloe (Aloe castanea) plants at the Phoenix Botanical Gardens in Arizonia.
5366399 aloe Aloe spp. Aloe (Aloe dorotheae) at the Phoenix Botanical Gardens in Arizonia.
5366875 agave Agave spp. An agave (Agave datylio var vexans) plant at the Phoenix Botanical Gardens in Arizona.
5366868 agave Agave spp. The long flower spike of a mescal agave (Agave parryi) plant at the Phoenix Botanical Gardens in Arizona. This is also sometimes called Palmer's agave (A. palmeri).
5366867 agave Agave spp. A Mescal agave (Agave parryi) plant at the Phoenix Botanical Gardens in Arizona. This is also sometimes called Palmer's agave (A. palmeri).
5366866 agave Agave spp. A Murphy's agave (Agave murpheyi) plant at the Phoenix Botanical Gardens in Arizona.
5366865 agave Agave spp. An agave plant at the Phoenix Botanical Gardens in Arizona.
5366864 agave Agave spp. An agave plant at the Phoenix Botanical Gardens in Arizona.
5366863 agave Agave spp. Agave plants at the Phoenix Botanical Gardens in Arizona.
5366491 cultivated garlic Allium sativum A cultivated garlic field.
5366490 cultivated garlic Allium sativum A cultivated garlic field.
5364400 asparagus Asparagus officinalis Asparagus seeds during a seed quality inspection exercise.
5361089 cultivated garlic Allium sativum Some bulbs and cloves of a cultivated garlic species.
5361088 cultivated garlic Allium sativum A bulb of a cultivated garlic species.
5360269 sisal Agave sisalana Sisal fibre drying as part of the fibre production process at Popayan in Colombia.
5360268 agave Agave spp. An agave plantation used for sisal fibre porduction at Popayan in Colombia.
5360091 sisal Agave sisalana Sisal fibre drying as part of the fibre production process at Silvia in Colombia.
5360088 agave Agave spp. An agave plantation used for sisal fibre porduction at Popayan in Colombia.
5358493 agave Agave spp. A mescal agave (Agave parryi var. truncata) at the Phoenix Botanical Garden.
5358494 agave Agave spp. A mescal agave (Agave parryi var. truncata) at the Phoenix Botanical Garden.
5362362 daylily Hemerocallis spp. A yellow variety of daylily in bloom.
5364475 tulip Tulipa spp. Some tulip plants in bloom in a garden.
5364474 tulip Tulipa spp. Some tulip plants in bloom.
5360125 agave Agave spp. Agaves and landscaping at the botanical garden in Medellin, Colombia.
5358405 Great Plains yucca Yucca glauca Flowers of a Great Plains yucca (Yucca glauca), growing along a roadside.
5358404 Great Plains yucca Yucca glauca Great Plains Yucca (Yucca glauca) growing along a roadside.
5358403 Great Plains yucca Yucca glauca Great Plains Yucca (Yucca glauca) growing along a roadside.
5359983 garden onion Allium cepa Onion field with plots marked for study of Iris Yellow Spot Virus.
5359974 garden onion Allium cepa Onion bulbs cut open to reveal damage created by bruising during handling.
5359968 garden onion Allium cepa Onion culls piled in a heap following harvest and sorting.
5359969 garden onion Allium cepa Onion culls spread in waste area following harvesting and sorting.
5359970 garden onion Allium cepa A pile of culled red onions discarded in the field.
5359820 garden onion Allium cepa An equipment for bacterial inoculation in the laboratory.
5359815 garden onion Allium cepa A weather station equipment used for disease forecasting on an onion filed at Rocky Ford.
5359814 garden onion Allium cepa Onion research plots at Rocky Ford in 1999.
5359813 garden onion Allium cepa Onion research plots at Rocky Ford in 1999.
5359811 garden onion Allium cepa Onion research plots at ARDEC in 1999.
5359812 garden onion Allium cepa Onion research plots at ARDEC in 1999.
5362268 garden onion Allium cepa Dew on an onion leaf in the field.
5360651 garden onion Allium cepa Harvested white, yellow and red onion bulbs
5360652 garden onion Allium cepa Harvested white, yellow and red onion bulbs
5360650 garden onion Allium cepa Harvested white, yellow and red onion bulbs.
5360632 garden onion Allium cepa A harvested red onion bulb.
5360633 garden onion Allium cepa A harvested red onion bulb.
5360634 garden onion Allium cepa A harvested red onion bulb.
5360631 garden onion Allium cepa A harvested white onion bulb.
5360629 garden onion Allium cepa A harvested white onion bulb.
5360630 garden onion Allium cepa A harvested white onion bulb.
5360628 garden onion Allium cepa A harvested white onion bulb.
5360626 garden onion Allium cepa A harvested yellow onion bulb.
5360627 garden onion Allium cepa A harvested yellow onion bulb.
5360625 garden onion Allium cepa A harvested yellow onion bulb.
5360624 garden onion Allium cepa A harvested yellow onion bulb.
5360593 garden onion Allium cepa A mid-season onion field showing a Pivot 39 access.
5360592 garden onion Allium cepa A mid-season onion field showing a Pivot 39 access.
5360591 garden onion Allium cepa  A mid-season onion field showing a Pivot 39 access.
5360590 garden onion Allium cepa A weather station equipment on an onion field.
5360589 garden onion Allium cepa A diesease modelling equipment on an onion field.
5360588 garden onion Allium cepa A weather station equipment on an onion field.
5360586 garden onion Allium cepa A weather station equipment on an onion field.
5360587 garden onion Allium cepa A weather station equipment on an onion field.
5360585 garden onion Allium cepa A weather station equipment on an onion field at Kersey.
5360584 garden onion Allium cepa A weather station equipment on an onion field at Kersey.
5360577 garden onion Allium cepa A weather station equipment on an onion field at Rocky Ford.
5360576 garden onion Allium cepa A weather station equipment on an onion field at Rocky Ford.
5360575 garden onion Allium cepa A weather station equipment on an onion field.
5360574 garden onion Allium cepa A weather station equipment on an onion field.
5360572 garden onion Allium cepa A weather station equipment on an onion field.
5360573 garden onion Allium cepa A weather station equipment on an onion field.
5360570 garden onion Allium cepa A weather station equipment on an onion field.
5360571 garden onion Allium cepa A weather station equipment on an onion field.
5360568 garden onion Allium cepa A weather station equipment on an onion field.
5360569 garden onion Allium cepa A weather station equipment on an onion field.
5360567 garden onion Allium cepa A weather station equipment on an onion field.
5360565 garden onion Allium cepa A weather station equipment on an onion field.
5360566 garden onion Allium cepa A weather station equipment on an onion field.
5360564 garden onion Allium cepa A weather station equipment on an onion field.
5360557 garden onion Allium cepa Scott Fichtner taking onion biomass measurements in the field.
5360558 garden onion Allium cepa An onion field in August 2001.
5360556 garden onion Allium cepa A truck used for the installation of a weather station equipment in an onion field.
5360555 garden onion Allium cepa An installation of a weather station equipment in an onion field.
5362326 garden onion Allium cepa An onion field infested with a weed species.
5362322 garden onion Allium cepa Onion plants infested with black nightshade, Solanum nigrum.
5362321 garden onion Allium cepa Onion plants being smothered by field bindweed, Convolvulus arvensis.
5362320 garden onion Allium cepa Puncturevine (Tribulus terrestris) growing among onion plants.
5362319 garden onion Allium cepa Velvetleaf seedling (Abutilon theophrasti), a weed among onions.
5362318 garden onion Allium cepa Herbicide was applied to control volunteer field corn plants growing among onions.
5362317 garden onion Allium cepa Volunteer potato plant growing as a weed among onions.
5362305 garden onion Allium cepa Bruising of an onion leaf caused by a rainstorm.
5362270 garden onion Allium cepa Vegetative chimera - an abiotic condition in onions.
5362266 garden onion Allium cepa Scouting onions, Larry Duell, Diesease, Insect, Pest, Crop consulting
5362269 garden onion Allium cepa Onion leaf with dew on it, a factor in research modeling onion diseases.
5362267 garden onion Allium cepa Stand of seeded onions in the field.
5362252 garden onion Allium cepa Onion umbels, Genetic research, Flowering, Morphology, Equipment, Seed quality
5362251 garden onion Allium cepa Onion breeding cages, Genetic research, Flowering, Screenhouse, Equipment, Seed quality
5362261 garden onion Allium cepa Herbicide damage (chlorosis) on an onion leaf.
5362253 garden onion Allium cepa Field of flowering onions for seed production.
5362248 garden onion Allium cepa Onion bulbs, Onion morphology
5362250 garden onion Allium cepa Cages used to maintain seed quality while studying the genetics and breeding of onions. Onions are in flower.
5362249 garden onion Allium cepa Cages used to maintain seed quality while studying the genetics and breeding of onions.
5362247 garden onion Allium cepa Onion production, El Paso Texas
5362246 garden onion Allium cepa Sprinkler irrigation of onions.
5362243 garden onion Allium cepa Sprinkler irrigation of onions.
5362241 garden onion Allium cepa Experiment similating the effects of storm damage to onions. Plants were topped by clipping.
5362239 garden onion Allium cepa Experiment similating the effects of storm damage to onions. Plants were topped by clipping.
5362240 garden onion Allium cepa Experiment similating the effects of storm damage to onions. Plants were topped by clipping.
5362237 garden onion Allium cepa Experiment in similating the effects of storm damage to onions: control plot, 75% of plants topped by clipping.
5362235 garden onion Allium cepa Experiment in similating the effects of storm damage to onions: control plot, 50% of plants topped by clipping.
5362233 garden onion Allium cepa Experiment in similating the effects of storm damage to onions: control plot, 25% of plants topped by clipping.
5362232 garden onion Allium cepa Experiment in similating the effects of storm damage to onions: control plot, 0% of plants topped by clipping.
5362230 garden onion Allium cepa Onion plants that have been topped by cutting them by hand, in an experiment simulating the effects of storm damage. From left to right, the plants have been clipped at the rates of 0%, 25%, 50%, and 75%.
5362228 garden onion Allium cepa Experiment in topping onions by cutting the plants by hand, to similate the effects of storm damage.
5362226 garden onion Allium cepa Spectrum weather station set up in a research plot to model parameters in a study on diseases of onions.
5362225 garden onion Allium cepa Research plots marked for bactericide application on onions in a study conducted at Rocky Ford, Colorado, September 1997.
5362220 garden onion Allium cepa Plots laid out in an onion field for pesticide application during research on downy mildew.
5362046 garden onion Allium cepa Field trial during research on onion thrips and Iris Yellow Spot Virus in Delta, Colorado, 2004.
5362042 garden onion Allium cepa Using a backpack sprayer to apply pesticide to a field of onions.
5362037 garden onion Allium cepa Drip irrigation tube for irrigating a field of onions.
5367604 garden onion Allium cepa Roller harrow to be used in preparing a field for planting onions.
5362025 garden onion Allium cepa Onion, field day, people, drip irrigation
5362023 garden onion Allium cepa Onion harvest, rolled tops
5362019 garden onion Allium cepa Onion harvest, rolled tops
5362021 garden onion Allium cepa Onion harvest, rolled tops
5367609 garden onion Allium cepa Iris Yellow Spot Virus, onion, field preparation, equipment, tractor, roller harrow
5367608 garden onion Allium cepa Iris Yellow Spot Virus, onion, field preparation, equipment, tractor, roller harrow
5367607 garden onion Allium cepa Iris Yellow Spot Virus, onion, field preparation, equipment, tractor, roller harrow
5367605 garden onion Allium cepa Iris Yellow Spot Virus, onion, field preparation, equipment, tractor, roller harrow
5367603 garden onion Allium cepa Field, disked and plowed in preparation for planting onions and conducting research on Iris Yellow Spot Virus.
5367602 garden onion Allium cepa Field, disked and plowed in preparation for planting onions and conducting research on Iris Yellow Spot Virus.
5367600 garden onion Allium cepa Field, disked and plowed in preparation for planting onions and conducting research on Iris Yellow Spot Virus.
5367599 garden onion Allium cepa Field, disked and plowed in preparation for planting onions and conducting research on Iris Yellow Spot Virus.
5367598 garden onion Allium cepa Field, disked and plowed in preparation for planting onions and conducting research on Iris Yellow Spot Virus.
5367597 garden onion Allium cepa A field has been disked and plowed in preparation for planting onions and conducting research on Iris Yellow Spot Virus.
5367595 garden onion Allium cepa Equipment used in a drip irrigation system for onions in western Colorado.
5367564 garden onion Allium cepa Volunteer onion plant in a field of dry beans - a potential reservoir or source for Iris Yellow Spot Virus.
5367562 garden onion Allium cepa Field of transplanted onions, demonstrating proper spacing of plants.
5367561 garden onion Allium cepa Field of transplanted onions, demonstrating proper spacing of plants.
5367560 garden onion Allium cepa Field of onion transplants, showing proper spacing of plants.
5366486 garden onion Allium cepa Portable ramp to be used with wagons during the harvest of onions.
5366485 garden onion Allium cepa Field carts for sorting or bagging of onions at harvest.
5366484 garden onion Allium cepa Onions in the process of being harvested.
5366483 garden onion Allium cepa Sprinkler irrigation in operation in an onion field.
5366482 garden onion Allium cepa Taper removal implement used in a drip irrigation system for onions.
5366481 garden onion Allium cepa Equipment used as part of a drip irrigation system for onions.
5366480 garden onion Allium cepa Some of the equipment used in a drip irrigation system for onions, California.
5366479 garden onion Allium cepa Drip irrigation system in a California onion field.
5366478 garden onion Allium cepa Drip irrigation of onions in a California field.
5365680 garden onion Allium cepa Experimental research into the use of a (non-registered) defoliant as a pre-harvest treatment of onions.
5365679 garden onion Allium cepa Experimental research into the use of a (non-registered) defoliant as a pre-harvest treatment of onions.
5365678 garden onion Allium cepa Experimental research into the use of a (non-registered) defoliant as a pre-harvest treatment of onions - view of affect on plants.
5365677 garden onion Allium cepa Experimental research into the use of a (non-registered) defoliant as a pre-harvest treatment of onions - closer view of affected plants.
5365676 garden onion Allium cepa Experimental research into the use of a (non-registered) defoliant as a pre-harvest treatment of onions - close view of browned tops.
5365675 garden onion Allium cepa Experimental research into the use of a (non-registered) defoliant as a pre-harvest treatment of onions - closer view of plants.
5365674 garden onion Allium cepa Experimental research into the use of a (non-registered) defoliant as a pre-harvest treatment of onions.
5365673 garden onion Allium cepa Experimental research into the use of a non-registered defoliant as a pre-harvest treatment of onions.
5366477 garden onion Allium cepa Drip irrigation of onions in California.
5366476 garden onion Allium cepa Drip irrigation in a California onion field.
5365688 garden onion Allium cepa Potted onions growing in a research greenhouse facility.
5365687 garden onion Allium cepa Potted onions growing in a research greenhouse facility.
5365686 garden onion Allium cepa Potted onions growing in a research greenhouse.
5365685 garden onion Allium cepa Onions growing in pots in a research greenhouse.
5366105 garden onion Allium cepa Field of onions being irrigated in western Colorado.
5366099 garden onion Allium cepa Onion research and demonstration plots, Colorado State University Extension.
5366092 garden onion Allium cepa Wind damage to onions.
5366091 garden onion Allium cepa Close-up view of herbicide (Prowl) and crop oil damage to an onion.
5366090 garden onion Allium cepa Close-up view of herbicide (Prowl) and crop oil damage to onions.
5366089 garden onion Allium cepa Close-up view of herbicide (Prowl) and crop oil damage to an onion.
5366088 garden onion Allium cepa Close-up view of herbicide (Prowl) and crop oil damage to an onion.
5366086 garden onion Allium cepa Herbicide (Prowl) and crop oil damage to an onion field.
5366087 garden onion Allium cepa Herbicide (Prowl) and crop oil damage to an onion field.
5366085 garden onion Allium cepa
5366084 garden onion Allium cepa Herbicide (Prowl) and crop oil damage to an onion field.
5366082 garden onion Allium cepa Close-up view of herbicide damage on an onion plant.
5366083 garden onion Allium cepa Close-up view of herbicide damage on an onion plant.
5366081 garden onion Allium cepa Close-up view of herbicide damage on an onion plant.
5366080 garden onion Allium cepa Herbicide damage to onions.
5365866 garden onion Allium cepa rolling, undercutting onions, harvest
5365865 garden onion Allium cepa equipment, rolling, undercutting onions, harvest, tractor, cutter
5365864 garden onion Allium cepa equipment, harvest, rolling, undercutting onions, equipment, tractor, cutter 
5365291 garden onion Allium cepa Onion plants at maturity in the field.
5365290 garden onion Allium cepa Onion plants at near-maturity in the field.
5365289 garden onion Allium cepa Leaf color differences of different onion varieties in the field.
5365287 garden onion Allium cepa Leaf color differences of different onion varieties in the field.
5365288 garden onion Allium cepa Leaf color differences of different onion varieties in the field.
5365286 garden onion Allium cepa Leaf color differences of different onion varieties in the field.
5365285 garden onion Allium cepa A variety trial field of onions at Rocky Ford in 1998.
5365272 garden onion Allium cepa Onion plants grown from large-sized seedsets in bolts.
5365271 garden onion Allium cepa Onion plants grown from large-sized seedsets in bolts.
5365270 garden onion Allium cepa Onion plants grown from large-sized seedsets in bolts.
5361767 garden onion Allium cepa Chimera of an onion plant in the field.
5361706 garden onion Allium cepa Onion plants at maturity on a variety trial field.
5361705 garden onion Allium cepa Onion plants at maturity on a variety trial field.
5361704 garden onion Allium cepa Onion plants at maturity on a variety trial field.
5361701 garden onion Allium cepa Strips of onion plants on a study field.
5361695 garden onion Allium cepa A study field of onions at Rocky Ford.
5361585 garden onion Allium cepa The damage to the basal plate of an onion transplant due to high temperature stress.
5361584 garden onion Allium cepa The damage to the basal plate of an onion transplant due to high temperature stress.
5361583 garden onion Allium cepa The damage to the basal plates of onion transplants due to high temperature stress.
5361582 garden onion Allium cepa The effects of high temperature stress on onion plant sizes in the field.
5361581 garden onion Allium cepa A field of onion plants at maturity showing different varietal plant morphologies.
5364520 garden onion Allium cepa A volunteer onion plant in a cabbage field as a weed.
5364556 garden onion Allium cepa Onion cultivation in the field.
5364552 garden onion Allium cepa Onion seedlings with flag leaf symptoms on the field.
5364551 garden onion Allium cepa Onion seedlings with flag leaf symptoms on the field.
5364399 garden onion Allium cepa Garden onion-sets during seed quality inspection.
5364398 garden onion Allium cepa Garden onion pelleted seeds during seed quality inspection.
5364397 garden onion Allium cepa Garden onion pelleted seeds during seed quality inspection.
5363909 garden onion Allium cepa Cropped yellow onions at maturity in the field.
5363908 garden onion Allium cepa White onion bulbs on the field after harvesting.
5363907 garden onion Allium cepa Red onion bulbs on the field after harvesting.
5363906 garden onion Allium cepa Yellow onion bulbs on the field after harvesting.
5361082 onions Allium spp. A scenic view of harvested onions topped and bagged in a field near Kersey, CO.
5362656 onions Allium spp. cultivating onions, equipment; onion, equipment, cultivation;  ; onion, equipment, tractor, cultivator
5362655 onions Allium spp. under-cutting onion transplants ,harvest; onion, undercut, harvest; onion, equipment, tractor, cutter 
5362650 garden onion Allium cepa Onion plants at the pre-bulbing stage of development in the field.
5362649 garden onion Allium cepa Onion plants at the pre-bulbing stage of development in the field.
5362648 garden onion Allium cepa An onion plant at the pre-bulbing stage of development in the field.
5362647 garden onion Allium cepa An onion plant at the pre-bulbing stage of development in the field.
5362644 garden onion Allium cepa Strips of onions in a variety trial on the field.
5362632 garden onion Allium cepa An onion field with a plant showing symptoms of oil damage.
5362631 garden onion Allium cepa An onion field with a split bulb showing symptoms of oil damage.
5362938 garden onion Allium cepa A micro-climate weather station on an onion field.
5362937 garden onion Allium cepa A micro-climate weather station on an onion field.
5362936 garden onion Allium cepa A micro-climate weather station on an onion field.
5362935 garden onion Allium cepa Calvin Hartzog at the micro-climate weather station on an onion field.
5362934 garden onion Allium cepa Pesticide application on an onion field.
5362933 garden onion Allium cepa Pesticide application on an onion field.
5362932 garden onion Allium cepa Pesticide application on an onion field.
5362931 garden onion Allium cepa A tractor digging a ditch as part of the ditch irrigation system installation on the field.
5362930 garden onion Allium cepa A management process of pesticide and fertiliser application during onion cultivation.
5362929 garden onion Allium cepa A management process of pesticide and fertiliser application during onion cultivation.
5362928 garden onion Allium cepa An onion seedling with probable abiotic disease symptoms in the field.
5362927 garden onion Allium cepa An onion seedling with probable abiotic disease symptoms in the field.
5362924 garden onion Allium cepa Volunteer onion plants in a winter wheat field
5362923 garden onion Allium cepa Volunteer onion plants in a winter wheat field.
5361114 garden onion Allium cepa A windrow harvestor in operation during onion harvesting in the field.
5361115 garden onion Allium cepa A windrow harvestor in operation during onion harvesting in the field.
5361113 garden onion Allium cepa A windrow harvestor in operation during onion harvesting in the field.
5361092 garden onion Allium cepa A windrow harvestor in operation during onion harvesting in the field.
5361091 garden onion Allium cepa Onion debris on the field after a harvesting operation.
5361090 garden onion Allium cepa Matured onions on the field during a harvesting operation.
5361087 garden onion Allium cepa An Air/Humidity control unit at an onion storage shed.
5361086 garden onion Allium cepa An Air/Humidity control unit at the onion storage shed.
5361085 garden onion Allium cepa Unloading of harvested onions to a storage shed.
5361084 garden onion Allium cepa Unloading of harvested onions to a storage shed.
5361081 garden onion Allium cepa A scenic view of harvested onions topped and bagged in a field near Kersey.
5361080 garden onion Allium cepa Harvested white onions involved in an onion variety trial.
5361079 garden onion Allium cepa Harvested white onions involved in an onion variety trial.
5361078 garden onion Allium cepa Harvested red onions involved in an onion variety trial.
5361077 garden onion Allium cepa Harvested red onions involved in an onion variety trial.
5361076 garden onion Allium cepa Harvested yellow onions involved in an onion variety trial.
5361075 garden onion Allium cepa Harvested yellow onions involved in an onion variety trial
5361074 garden onion Allium cepa A harvested field of onions involved in an onion variety trial
5361073 garden onion Allium cepa A field of matured onions involved in an onion variety trial.
5361498 garden onion Allium cepa A scenic view of a mid-season field of onions at Delta.
5361497 garden onion Allium cepa A scenic view of transplanted onion curing in bags on a field at Montrose.
5361496 garden onion Allium cepa A scenic view of seeded onion curing in windrows on a field at Montrose.
5361457 garden onion Allium cepa Onions curing in windrows in the field.
5361456 garden onion Allium cepa Onions curing in bags.
5361454 garden onion Allium cepa Preparing onions for the storage shed
5361453 garden onion Allium cepa Curing onions in crates immediately following harvest.
5361452 garden onion Allium cepa Bagging equipment in use during onion harvest.
5361451 garden onion Allium cepa Harvesting onions using a mechanical harvester.
5361450 garden onion Allium cepa Using a tractor to push onions into windrows for harvesting.
5361449 garden onion Allium cepa Using a tractor to top onions in preparation for harvest.
5361448 garden onion Allium cepa Using a tractor to roll the tops of onions, in preparation for harvest.
5361447 garden onion Allium cepa Tractor cultivator in an onion field.
5361446 garden onion Allium cepa Onion planter (tractor) in use.
5361445 garden onion Allium cepa Remote electronic weather station used in research, modeling the diseases of onions and dry beans - Holyoke, Colorado.
5361441 garden onion Allium cepa Remote electronic weather station used for research on dry beans and onions - Ault, Colorado
5361423 garden onion Allium cepa Spiral plater in laboratory, used in research on the diseases of onion.
5361422 garden onion Allium cepa Micro-pipetter in use in research into bacteria of onions.
5360264 garden onion Allium cepa Onions being shipped to market via bus in Tenerife, Colombia.
5360263 garden onion Allium cepa Bagged onions awaiting transport to market in Tenerife, Colombia.
5360262 garden onion Allium cepa Onion fields in the Tenerife Valley, Colombia.
5360166 garden onion Allium cepa Furrow irrigation of onion beds.
5360165 garden onion Allium cepa Furrow irrigation of  onions.
5360079 garden onion Allium cepa Breakdown during shipment of onions by truck - Tenerife, Colombia.
5360078 garden onion Allium cepa Onions being shipped to market in a bus - Tenerife, Colombia.
5360077 garden onion Allium cepa Bags of onions awaiting shipment to market in Tenerife, Colombia.
5360076 garden onion Allium cepa Onion fields in the Tenerife Valley, Colombia.
5360075 garden onion Allium cepa Onion fields in the Tenerife Valley, Colombia.
5360333 garden onion Allium cepa Onion culls piled and spread in a field could result in unwanted volunteer plants the next season. Sheep in the background.
5360329 garden onion Allium cepa Truck loaded with onions at a processing shed in Montrose, Colorado.
5360328 garden onion Allium cepa Onion processing shed at Montrose, Colorado.
5360327 garden onion Allium cepa Onion processing shed at Montrose, Colorado.
5359382 garden onion Allium cepa Red onions in bulk storage after harvest.
5359381 garden onion Allium cepa Computer set up for entering data in an onion storage shed.
5359380 garden onion Allium cepa A grader being used to sort yellow onions.
5359379 garden onion Allium cepa Equipment used to sort pearl onions.
5359378 garden onion Allium cepa Trucks full of onions wait to be unloaded at the shed.
5359377 garden onion Allium cepa Trucks full of newly harvested onions waiting at the onion shed
5359376 garden onion Allium cepa Onions bagged and curing in a field that had been irrigated with a center pivot system
5359375 garden onion Allium cepa Bagged onions curing in the field
5359374 garden onion Allium cepa Using a tractor to top (cut) onions prior to harvest
5359373 garden onion Allium cepa Onions maturing in a field irrigated with a center pivot system, prior to harvest.
5359372 garden onion Allium cepa Attendees of an Extension field day, viewing onions in a variety trial.
5359371 garden onion Allium cepa Yellow onions at the bulbing stage of development
5359369 garden onion Allium cepa Spraying of herbicide onto an onion field
5359370 garden onion Allium cepa Tractor spraying herbicide on an onion field.
5359368 garden onion Allium cepa Field of onion transplants.
5359367 garden onion Allium cepa View of a field of newly transplanted onions.
5359366 garden onion Allium cepa Field of newly planted onion transplants.
5359365 garden onion Allium cepa Field workers planting onion transplants.
5359364 garden onion Allium cepa Herbicide application to an onion field prior to planting.
5359363 garden onion Allium cepa Planting onions, using a tractor
5359362 garden onion Allium cepa Onion inflorescence (umbel) in bloom
5359361 garden onion Allium cepa Onions bolting to flower in field, prior to harvest of bulbs.
5359360 garden onion Allium cepa Sprouting onion culls left in a wagon after harvest
5359359 garden onion Allium cepa Onion culls left lying in the field after harvest.
5359358 garden onion Allium cepa Onion culls left lying in field.
5359355 garden onion Allium cepa Onion seedlings
5359353 garden onion Allium cepa Tractors packing soil after injection (fumigation) of pesticide into an onion field.
5359338 garden onion Allium cepa Close-up view of tractor used for placing liquid nitrogen fertilizer beneath onion beds.
5359337 garden onion Allium cepa Chisel tractor used for placing liquid nitrogen fertilizer beneath onion beds.
5359336 garden onion Allium cepa Closer view of tractor fertilizing an onion field using liquid nitrogen placement beneath onion beds.
5359335 garden onion Allium cepa Tractor fertilizing an onion field using liquid nitrogen placement beneath onion beds.
5359334 garden onion Allium cepa Tractor fertilizing an onion field using liquid nitrogen placement beneath onion beds.
5359333 garden onion Allium cepa Liquid nitrogen placement beneath onion beds.
5359269 garden onion Allium cepa Onion flower buds emerging from the "bud" at the top of a stalk.
5359268 garden onion Allium cepa Flower bud (umbel) atop an onion stalk.
5359267 garden onion Allium cepa Harvesting transplanted onions.
5359266 garden onion Allium cepa Scenic view of a field of onions.
5359265 garden onion Allium cepa Scenic view of an onion field.
5359264 garden onion Allium cepa Onions being irrigated from a ditch system.
5359465 garden onion Allium cepa Intercropping system of onions and dry beans in Tenerife, Colombia.
5358846 garden onion Allium cepa Truck harvesting onions.
5358842 garden onion Allium cepa Onion production field.
5358965 garden onion Allium cepa Linear irrigation of onions.
5358397 garden onion Allium cepa Spinkler irrigating onion seedlings.
5358396 garden onion Allium cepa Spinkler irrigating onion seedlings.
5358380 garden onion Allium cepa Onion seedlings near weather station in research plots that also include "volunteer" onions.
5358379 garden onion Allium cepa Onion culls left in the field can sprout ("volunteer") and promote disease.
5358378 garden onion Allium cepa Culls left in the field can sprout ("volunteer") and promote diseases in onion fields.
5358543 garden onion Allium cepa Drip irrigation in an onion field.
5358569 garden onion Allium cepa COAGMET and Spectrum weather stations in field plots for research on bacterial diseases of onions, Yuma, CO, 2004.
5358568 garden onion Allium cepa COAGMET and Spectrum weather stations in field plots for research on bacterial diseases of onions, Yuma, CO, 2004.
5358567 garden onion Allium cepa COAGMET and Spectrum weather stations in field plots for research on bacterial diseases of onions, Yuma, CO, 2004.
5358566 garden onion Allium cepa Field plots for research on bacterial diseases of onions, Yuma, CO, 2004.
5358564 garden onion Allium cepa Damage to onion caused by the use of Prowl herbicide.
5358565 garden onion Allium cepa Damage to onion caused by the use of Prowl herbicide.
5358562 garden onion Allium cepa Damage to onion caused by the use of Prowl herbicide.
5358563 garden onion Allium cepa Damage to onion caused by the use of Prowl herbicide.
5358561 garden onion Allium cepa Damage to onion caused by the use of Prowl herbicide.
5358560 garden onion Allium cepa Prowl herbicide damage to an onion plant.
5358559 garden onion Allium cepa Damage to onion plant caused by Prowl herbicide.
5358558 garden onion Allium cepa Prowl herbicide damage to an onion plant.
5358557 garden onion Allium cepa Prowl herbicide damage.
5358556 garden onion Allium cepa Damage to onion plant caused by the herbicide, Prowl.
5358555 garden onion Allium cepa Damage to onion plant caused by the herbicide Prowl.
5358554 garden onion Allium cepa Gas well in an onion field.
5358553 garden onion Allium cepa Cultivator used in setting up a drip irrigation system in an onion field.
5358552 garden onion Allium cepa Close-up view of cultivator used for setting up a drip irrigation system in an onion field.
5358551 garden onion Allium cepa Equipment for use in setting up drip irrigation in an onion field.
5358550 garden onion Allium cepa Equipment used in establishing drip irrigation in an onion field.
5358549 garden onion Allium cepa Close-up view (between rows) of drip irrigation in an onion field.
5358546 garden onion Allium cepa Drip irrigation in an onion field.
5358545 garden onion Allium cepa Drip irrigation in an onion field.
5358544 garden onion Allium cepa Drip irrigation in an onion field.
5358542 garden onion Allium cepa Drip irrigation in an onion field, 7 lines per bed.
5358515 onions Allium spp. Close-up view of the bulblets on an Egyptian Walking Onion in the Phoenix Botanical Garden.
5358514 onions Allium spp. Close-up view of bulblets on an Egyptian Walking Onion (Allium x proliferum) in the Phoenix Botanical Garden.
5358513 onions Allium spp. Egyptian Walking Onion (Allium x proliferum) in the Phoenix Botanical Garden.
5357334 garden onion Allium cepa Yellow onion bulbs
5357333 garden onion Allium cepa Yellow onions
5357331 garden onion Allium cepa Yellow onion bulbs
5357330 garden onion Allium cepa Bulb of a yellow onion
5357329 garden onion Allium cepa Bulb of a yellow onion
5357328 garden onion Allium cepa Bulb of a yellow onion

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