| 5492375 |
oak wilt |
Ceratocystis fagacearum |
C. fagacearum culture on APDA+ medium
Host: Quercus virginiana |
| 5492326 |
oak wilt |
Ceratocystis fagacearum |
Appearance of Ceratocystis fagacearum grown on acidified potato dextrose agar (APDA) at 18 degrees C. (at 3-4 weeks) |
| 5492303 |
early blight |
Alternaria solani |
Four Alternaria solani isolates growing on acidified potato dextrose agar (APDA) and showing colony variation and yellow pigmentation of the agar. |
| 5454396 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Bipolaris sp. growing on potato dextrose agar (PDA) |
| 5454397 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Biploaris sp. growing on quarter-strength (1/4) potato dextrose agar (PDA) |
| 5454398 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Bipolaris sp. growing on quarter-strength (1/4) potato dextrose agar (PDA) |
| 5454399 |
Bipolaris fungus |
Bipolaris spicifera |
The reverse of a three day old culture of a Bipolaris sp. growing on quarter-strength (1/4) potato dextrose agar (PDA) |
| 5454400 |
Bipolaris fungus |
Bipolaris spicifera |
The reverse of a three day old culture of a Bipolaris sp. growing on potato dextrose agar (PDA) |
| 5485047 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
View of Sclerotinia sclerotiorum growing on PDA. |
| 5485048 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
View of Sclerotinia sclerotiorum growing on PDA. |
| 5485075 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
Hyphae of Sclerotinia sclerotiorum mounted in aniline blue in lactophenol, viewed at 400x magnification. |
| 5485074 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
Hyphae of Sclerotinia sclerotiorum at 400x magnification.
Host: poinsettia |
| 5485044 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
View from the bottom of the petri dish of a Sclerotinia sclerotiorum culture growing on PDA. |
| 5482729 |
fire blight |
Erwinia amylovora |
Day 1 on crystal violet pectin medium. 12hr-light /12hr-dark 25 degrees Celsius. |
| 5482730 |
fire blight |
Erwinia amylovora |
Day 1 on Kings Medium B. 12hr-light/12hr-dark at 25 degrees Celsius. |
| 1570153 |
green mold |
Penicillium digitatum |
A single sector has overgrown the original colony of Penicillium digitatum. Sectoring is a common phenomenon in P. digitatum. |
| 5483034 |
Verticillium wilt |
Verticillium dahliae |
Microsclerotia of Verticillium dahliae form in agar culture following isolation of the fungus. |
| 5482733 |
fire blight |
Erwinia amylovora |
|
| 5478399 |
leaf and sheath spot |
Rhizoctonia zeae |
5X magnification of 12-day-old culture on quarter-strength PDA. (12hr/12hr light/dark at 25C) |
| 5478398 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 5 of culture at 25 degrees celcius (12hr/12hr light/dark) on quarter-strength potato dextrose agar. |
| 5478397 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 5 of culture at 25 degrees celcius (12hr/12hr light/dark) on quarter-strength potato dextrose agar. |
| 5478396 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 5 of culture at 25 degrees celcius (12hr/12hr light/dark) on acidified potato dextrose agar. |
| 5478395 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 5 of culture at 25 degrees celcius (12hr/12hr light/dark) on acidified potato dextrose agar. |
| 5478394 |
leaf and sheath spot |
Rhizoctonia zeae |
day 12 of culture on quarter-strength PDA (12hr/12hr light/dark incubation at 25C) |
| 5478393 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 2 of culture at 25 degrees celcius (12hr/12hr light/dark) on quarter-strength potato dextrose agar. |
| 5478392 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 2 of culture at 25 degrees celcius (12hr/12hr light/dark) on quarter potato dextrose agar. |
| 5479857 |
Phytophthora root rot |
Phytophthora cinnamomi |
Grape-like clusters of hyphal swellings |
| 1570552 |
Penicillium fungus |
Penicillium variabile |
Penicilli (brush-like head) of Penicillum variabile. February 1993 |
| 5473753 |
black mold |
Aspergillus niger |
Gross culture morphology; one-week post plating |
| 5478389 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 12 of culture at 25 degrees Celcius (12hr/12hr light/dark) on quarter-strength potato dextrose agar. |
| 5478388 |
leaf and sheath spot |
Rhizoctonia zeae |
Day 12 of culture at 25 degrees Celcius (12hr/12hr light/dark) on quarter potato dextrose agar. Top view of plate. |
| 1247177 |
pitch canker |
Fusarium subglutinans |
Pink mycelial growth |
| 1599002 |
peanut |
Arachis spp. |
general peanuts
wind effect on mist blower |
| 5429981 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
Growth of Rhizoctonia solani on A-PDA medium
Affecting creeping bentgrass (Agrostis stolonifera) |
| 5429982 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
Growth of Rhizoctonia solani on A-PDA medium
Affecting Creeping bentgrass (Agrostis stolonifera) |
| 5454395 |
Bipolaris fungus |
Bipolaris spicifera |
Three day old culture of a Bipolaris sp. growing on potato dextrose agar (PDA) |
| 5472513 |
southern blight |
Sclerotium rolfsii |
Sclerotium rolfsii growing on potato dextrose agar (PDA) |
| 5472512 |
southern blight |
Sclerotium rolfsii |
Sclerotium rolfsii growing on potato dextros agar (PDA) |
| 5473758 |
black mold |
Aspergillus niger |
Gross culture morphology; one-week post plating
In vitro |
| 5473759 |
black mold |
Aspergillus niger |
Gross culture morphology; one-week post plating
In vitro |
| 5473762 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Gross culture morphology; one-month post plating
In vitro |
| 5473763 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Culture margin; one-month post plating
In vitro |
| 5473764 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Gross culture morphology; one-month post plating
In vitro |
| 5473913 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Culture margin; one-month post plating |
| 5473914 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Selected view of gross culture-margin morphology; one-month post plating
In vitro |
| 5473915 |
Cochliobolus leaf spot |
Bipolaris sorokiniana |
Gross morphology of culture surface; one-month post plating
In vitro |
| 1572471 |
black mold |
Aspergillus niger |
Onion seed plated on potato dextrose agar shows contamination with Aspergillus niger. October 1996 |
| 1572446 |
Monosporascus root rot |
Monosporascus cannonballus |
Short piece of cantaloupe root with lesion/s plated on water agar allows the mycelium of Monosporascus cannonballus to grow. View of Petri dish is from the reverse/bottom. Coarse mycelium of M. cannonballus is growing out from the root piece. October 1996 |
| 1572445 |
Monosporascus root rot |
Monosporascus cannonballus |
Short pieces of cantaloupe root with lesion/s plated on water agar allows the mycelium of Monosporascus cannonballus to grow. October 1996 |
| 1572444 |
Monosporascus root rot |
Monosporascus cannonballus |
Short piece of cantaloupe root with lesion/s plated on water agar allows the mycelium of Monosporascus cannonballus to grow. October 1996 |
| 1572366 |
Monosporascus root rot |
Monosporascus cannonballus |
Method for isolating Monosporascus cannonballus from cantaloupe roots. Short pieces of roots with lesions are washed then plated onto water agar. As the fungal mycelium grows out from the lesions, small chunks of agar are transferred to PDA. August 1996 |
| 5262083 |
Phytophthora tropicalis |
Phytophthora tropicalis |
|
| 5462080 |
cultural practices |
|
Cemetery; Fort King George, Darien, GA |
| 1571190 |
asparagus |
Asparagus officinalis |
Asparagus fern. May 1995 |
| 1570198 |
Penicillium fungi |
Penicillium spp. |
Isolates of Penicillium digitatum and P. italicum stored on silica gel. October 1990 |
| 1570122 |
Penicillium fungi |
Penicillium spp. |
A Petri dish containing potato dextrose agar after 30-second exposure to citrus packinghouse environment and 5-day incubation at 25oC. Many species of fungi were detected by this method, including the well-known pathogens Penicillium digitatum and P. italicum, causes of green mold and blue mold, respectively. This shows the diversity of organisms present in the air. May 1987 |
| 5459295 |
southern blight |
Sclerotium rolfsii |
Mature sclerotia forming in culture |
| 5459293 |
southern blight |
Sclerotium rolfsii |
Young sclerotia forming in culture- six days |
| 5459290 |
southern blight |
Sclerotium rolfsii |
Hyphal clamp connection in culture |
| 5459289 |
southern blight |
Sclerotium rolfsii |
Hyphal clamp connection in culture |
| 5459288 |
southern blight |
Sclerotium rolfsii |
Hyphal clamp connection in culture |
| 5455002 |
southern blight |
Sclerotium rolfsii |
Three day old culture of Sclerotium rolfsii on quarter-strength potato dextrose agar (1/4 PDA). |
| 5455003 |
southern blight |
Sclerotium rolfsii |
Seven day old culture of Sclerotium rolfsii on quarter-strength potato dextrose agar (1/4 PDA). Sclerotia are beginning to form. |
| 5455004 |
southern blight |
Sclerotium rolfsii |
Seven day old culture of Sclerotium rolfsii on potato dextrose agar (PDA). Sclerotia are beginning to form. |
| 5455005 |
southern blight |
Sclerotium rolfsii |
Seven day old culture of Sclerotium rolfsii on potato dextrose agar (PDA). Sclerotia are beginning to form. |
| 5455006 |
southern blight |
Sclerotium rolfsii |
Seven day old culture of Sclerotium rolfsii on potato dextrose agar (PDA). Sclerotia are beginning to form. |
| 5455007 |
southern blight |
Sclerotium rolfsii |
Seven day old culture of Sclerotium rolfsii on quarter-strength potato dextrose agar (1/4 PDA). Sclerotia are beginning to form. |
| 5455008 |
southern blight |
Sclerotium rolfsii |
Seven day old culture of Sclerotium rolfsii on quarter-strength potato dextrose agar (1/4 PDA). Sclerotia are beginning to form. |
| 5455009 |
bitter rot and anthracnose |
Colletotrichum gloeosporioides |
Three day old culture of Colletotrichum gloeosporioides on potato dextrose agar (PDA) |
| 5455010 |
bitter rot and anthracnose |
Colletotrichum gloeosporioides |
Three day old culture of Colletotrichum gloeosporioides on potato dextrose agar (PDA) |
| 5455011 |
bitter rot and anthracnose |
Colletotrichum gloeosporioides |
Three day old culture of Colletotrichum gloeosporioides on potato dextrose agar (PDA) |
| 5455012 |
bitter rot and anthracnose |
Colletotrichum gloeosporioides |
Seven day old culture of Colletotrichum gloeosporioides on potato dextrose agar (PDA) |
| 5455013 |
bitter rot and anthracnose |
Colletotrichum gloeosporioides |
Seven day old culture of Colletotrichum gloeosporioides on potato dextrose agar (PDA) |
| 5448412 |
Fusarium root rot and wilt |
Fusarium oxysporum |
|
| 5448413 |
Fusarium root rot and wilt |
Fusarium oxysporum |
|
| 5448414 |
Fusarium root rot and wilt |
Fusarium oxysporum |
|
| 5449449 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
Rhizoctonia solani grown on potato dextrose agar, brown mycelium with sclerotia |
| 1580751 |
red maple |
Acer rubrum |
Acer rubrum 'Red Rocket' |
| 5407884 |
root rot/damping off |
Rhizoctonia spp. |
|
| 5440104 |
Corynespora blight |
Corynespora spp. |
bottom of plate, 6 days of growth in alternating 12 hours light/dark cycle, grown at 25C |
| 5440126 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 4 |
| 5440130 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C |
| 5440131 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C |
| 5440127 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C
Top of culture on Day 4 |
| 5440128 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 6 |
| 5440129 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C |
| 5440124 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 2 |
| 5440125 |
fungus |
Chlamydomyces spp. |
12/12 light/dark at 27 C
Top of culture on Day 2 |
| 5440136 |
fungus |
Ulocladium spp. |
12/12 light/dark at 27 C
Top of culture on Day 6 |
| 5440137 |
fungus |
Ulocladium spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 8 |
| 5440138 |
fungus |
Ulocladium spp. |
12/12 light/dark at 27 C
Top of culture on Day 8 |
| 5440133 |
fungus |
Ulocladium spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 4 |
| 5440134 |
fungus |
Ulocladium spp. |
12/12 light/dark at 27 C
Top of culture on Day 4 |
| 5440135 |
fungus |
Ulocladium spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 6 |
| 5440132 |
fungus |
Ulocladium spp. |
12/12 light/dark at 27 C
Top of culture on Day 2 |
| 5440106 |
Corynespora blight |
Corynespora spp. |
bottom of plate, 8 days of growth in alternating 12 hours light/dark cycle, grown at 25C |
| 5440107 |
Corynespora blight |
Corynespora spp. |
Top of plate, 8 days of growth in alternating 12 hours light/dark cycle, grown at 25C |
| 5440103 |
Corynespora blight |
Corynespora spp. |
top of plate, 4 days of growth in alternating 12 hours light/dark cycle, grown at 25C |
| 5440105 |
Corynespora blight |
Corynespora spp. |
top of plate, 6 days of growth in alternating 12 hours light/dark cycle, grown at 25C |
| 5440101 |
Corynespora blight |
Corynespora spp. |
top of plate
12/12 light/dark at 27 C |
| 5440102 |
Corynespora blight |
Corynespora spp. |
bottom of plate, 4 days of growth in alternating 12 hours light/dark cycle, grown at 25C |
| 5440100 |
Corynespora blight |
Corynespora spp. |
bottom of plate
12/12 light/dark at 27 C |
| 5440154 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27C
Top of culture on Day 8 |
| 5440168 |
Pythium root and stem rot |
Pythium aphanidermatum |
12/12 light/dark at 27C
Top of culture on Day 6 |
| 5440166 |
Pythium root and stem rot |
Pythium aphanidermatum |
12/12 light/dark at 27C
Top of culture on Day 4 |
| 5440167 |
Pythium root and stem rot |
Pythium aphanidermatum |
12/12 light/dark at 27C
Bottom of culture on Day 6 |
| 5440165 |
Pythium root and stem rot |
Pythium aphanidermatum |
12/12 light/dark at 27C
Bottom of culture on Day 4 |
| 5440162 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Top of culture on Day 8 |
| 5440164 |
Pythium root and stem rot |
Pythium aphanidermatum |
12/12 light/dark at 27C
Top of culture on Day 2 |
| 5440163 |
Pythium root and stem rot |
Pythium aphanidermatum |
12/12 light/dark at 27C
Bottom of culture on Day 2 |
| 5440158 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Top of culture on Day 4 |
| 5440159 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Bottom of culture on Day 6 |
| 5440160 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Top of culture on Day 6 |
| 5440161 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Bottom of culture on Day 8 |
| 5440155 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Top of culture on Day 2 |
| 5440156 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Bottom of culture on Day 2 |
| 5440157 |
laurel wilt |
Raffaelea lauricola |
12/12 light/dark at 27C
Bottom of culture on Day 4 |
| 5440153 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27 C
Bottom of culture on Day 8 |
| 5440150 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27 C
Top of culture on Day 4 |
| 5440151 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27 C
Bottom of culture on Day 6 |
| 5440152 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27 C
Top of culture on Day 6 |
| 5440148 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27 C
Top of culture on Day 2 |
| 5440149 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27 C
Bottom of culture on Day 4 |
| 5440123 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Top of culture on Day 8 |
| 5440147 |
dollar spot |
Sclerotinia homoeocarpa |
12/12 light/dark at 27 C
Bottom of culture on Day 2 |
| 5440121 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Top of culture on Day 6 |
| 5440122 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Bottom of culture on Day 8 |
| 5440119 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Top of culture on Day 4 |
| 5440120 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Bottom of culture on Day 6 |
| 5440118 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Bottom of culture on Day 4 |
| 5440116 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Bottom of culture on Day 2 |
| 5440117 |
leaf and sheath spot |
Rhizoctonia zeae |
12/12 light/dark at 27 C
Top of culture on Day 2 |
| 5440114 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Bottom of culture on Day 8 |
| 5440115 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Top of culture on Day 8 |
| 5440110 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Bottom of culture on Day 4 |
| 5440111 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Top of culture on Day 4 |
| 5440112 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Bottom of culture on Day 6 |
| 5440113 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Top of culture on Day 6 |
| 5440108 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Bottom of culture on Day 2 |
| 5440109 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
12/12 light/dark at 27 C
Top of culture on Day 2 |
| 5440146 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Top of culture Day 8 |
| 5440144 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Top of culture on Day 6 |
| 5440145 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 8 |
| 5440143 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 6 |
| 5440140 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 2 |
| 5440141 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Bottom of culture on Day 4 |
| 5440142 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Top of culture on Day 4 |
| 5440139 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
12/12 light/dark at 27 C
Day 2 bottom |
| 5429792 |
Gaeumannomyces fungi |
Gaeumannomyces spp. |
Hyphopodia and mycelia, 250X |
| 5429776 |
bacterial black stalk |
Erwinia spp. |
Nutrient agar two-day-old culture, viewed from the bottom of the plate |
| 5429777 |
bacterial black stalk |
Erwinia spp. |
Nutrient agar two-day-old culture, viewed from the top of the plate |
| 5429787 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
4-day-old culture grown on QPDA at 25C with alternating light and dark cycles. Viewed from top of plate. |
| 5429794 |
laurel wilt |
Raffaelea lauricola |
10-day-old culture on CSMA medium, grown at 25C with alternating light and dark, 71X |
| 5429775 |
Pestalotia fungi |
Pestalotia spp. |
eight-day-old culture grown on QPDA at 25C with alternating light and dark, viewed from bottom of plate |
| 5429773 |
Pestalotia fungi |
Pestalotia spp. |
four-day-old culture grown on QPDA at 25C with alternating light and dark |
| 5429774 |
Pestalotia fungi |
Pestalotia spp. |
Four-day-old culture grown on QPDA at 25C with alternating light and dark, viewed from bottom of plate. |
| 5429772 |
Pestalotia fungi |
Pestalotia spp. |
two-day-old culture grown on QPDA at 25C with alternating light and dark |
| 5429770 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
8-day-old culture, viewed from bottom of plate, grown on QPDA at 25C with alternating light and dark cycles |
| 5429771 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
8-day-old culture, grown on QPDA at 25C with alternating light and dark cycles |
| 5429769 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
4-day-old culture grown on QPDA at 25C with alternating light and dark cycles, viewed from bottom of plate |
| 5429768 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
2-day-old culture grown on QPDA at 25C with alternating light and dark cycles |
| 5429778 |
bacterial black stalk |
Erwinia spp. |
MSM three-day-old culture, viewed from the bottom |
| 5426745 |
Alternaria black molds / stem cankers |
Alternaria spp. |
bottom view of plate at two days |
| 5426746 |
Alternaria black molds / stem cankers |
Alternaria spp. |
top view of culture plate at two days |
| 5426748 |
Alternaria black molds / stem cankers |
Alternaria spp. |
bottom view of culture plate at 4 days |
| 5426749 |
Alternaria black molds / stem cankers |
Alternaria spp. |
top view of culture plate at 4 days |
| 5426750 |
Alternaria black molds / stem cankers |
Alternaria spp. |
bottom view at 6 days |
| 5426751 |
Alternaria black molds / stem cankers |
Alternaria spp. |
top view at 6 days |
| 5429779 |
bacterial black stalk |
Erwinia spp. |
MSM three-day-old culture, viewed from the top of the plate. Note that blue MSM medium has turned red-orange (positive result for Erwinia spp.) |
| 5429780 |
bacterial black stalk |
Erwinia spp. |
CVP culture showing pitting (convex cultures) that are significant for pectolytic Erwinia spp. |
| 5429791 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
dissecting microscope image of four-day-old culture |
| 5429781 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
two-day-old culture on QPDA, grown at 25 C with alternating light and dark, viewed from the bottom of the plate |
| 5429782 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
two-day-old culture on QPDA, grown at 25 C with alternating light and dark, viewed from the top of the plate |
| 5429783 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
11-day-old culture on QPDA, grown at 25 C with alternating light and dark, viewed from the bottom of the plate |
| 5429788 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
four-day-old culture on QPDA, grown at 25 C with alternating light and dark, viewed from the bottom of the plate |
| 5429789 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
four-day-old culture on QPDA, grown at 25 C with alternating light and dark, viewed from the top of the plate |
| 5426787 |
Pestalotia fungi |
Pestalotia spp. |
bottom view at 2 days |
| 5426777 |
Mucor fungus |
Mucor spp. |
bottom view at 4 days, 25C |
| 5426827 |
wood rot fungi |
Trichoderma spp. |
Please note that Trichoderma is common lab contaminant and not technically a plant pathogen. It is frequently seen on plates while attemping to grow out unknown pathogens. This is a bottom view at 4 days. |
| 5426828 |
wood rot fungi |
Trichoderma spp. |
Please note that Trichoderma is common lab contaminant and not technically a plant pathogen. It is frequently seen on plates while attemping to grow out unknown pathogens. This is the top view at 4 days. |
| 5426831 |
wood rot fungi |
Trichoderma spp. |
Please note that Trichoderma is common lab contaminant and not technically a plant pathogen. It is frequently seen on plates while attemping to grow out unknown pathogens. This is a bottom view at 6 days. |
| 5426832 |
wood rot fungi |
Trichoderma spp. |
Please note that Trichoderma is common lab contaminant and not technically a plant pathogen. It is frequently seen on plates while attemping to grow out unknown pathogens. This is a top view at 6 days. |
| 5426833 |
wood rot fungi |
Trichoderma spp. |
Please note that Trichoderma is common lab contaminant and not technically a plant pathogen. It is frequently seen on plates while attemping to grow out unknown pathogens. This is a bottom view at 2 days. |
| 5426834 |
wood rot fungi |
Trichoderma spp. |
Please note that Trichoderma is common lab contaminant and not technically a plant pathogen. It is frequently seen on plates while attemping to grow out unknown pathogens. This is a top view at 2 days. |
| 5426790 |
Pestalotia fungi |
Pestalotia spp. |
top view at 4 days, 25C |
| 5426791 |
Pestalotia fungi |
Pestalotia spp. |
bottom view at 6 days, 25C |
| 5426792 |
Pestalotia fungi |
Pestalotia spp. |
top view at 6 days, 25C |
| 5426793 |
Pestalotia fungi |
Pestalotia spp. |
|
| 5426794 |
Pestalotia fungi |
Pestalotia spp. |
|
| 5426795 |
Pestalotia fungi |
Pestalotia spp. |
|
| 5426800 |
Rhizopus soft rots |
Rhizopus spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a bottom view of the culture plate at 2 days. |
| 5426801 |
Rhizopus soft rots |
Rhizopus spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a top view of the culture plate at 2 days. |
| 5426802 |
Rhizopus soft rots |
Rhizopus spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a bottom view at 4 days. |
| 5426803 |
Rhizopus soft rots |
Rhizopus spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a top view at 4 days. |
| 5426771 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
bottom view of culture plate at 4 days |
| 5426772 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
top view of culture plate at 4 days |
| 5426773 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
bottom view of culture plate at 6 days |
| 5426774 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
image taken after 2 days of growth on APDA at 25C |
| 5426775 |
Mucor fungus |
Mucor spp. |
This is the bottom view of the culture plate at 2 days (25C). |
| 5426776 |
Mucor fungus |
Mucor spp. |
top view of culture plate at 2 days, 25C
|
| 5426778 |
Mucor fungus |
Mucor spp. |
top view of culture plate at 4 days, 25C |
| 5426779 |
Mucor fungus |
Mucor spp. |
bottom view of culture plate at 6 days, 25C |
| 5426784 |
Mucor fungus |
Mucor spp. |
image taken with dissecting microscope |
| 5426786 |
Mucor fungus |
Mucor spp. |
top view of culture plate at 6 days, 25C |
| 5426811 |
black stem, stalk rot |
Thielaviopsis spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a bottom view of the culture plate at 2 days. |
| 5426812 |
black stem, stalk rot |
Thielaviopsis spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a top view of the culture plate at 2 days. |
| 5426813 |
black stem, stalk rot |
Thielaviopsis spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a bottom view of the culture plate at 4 days. |
| 5426814 |
black stem, stalk rot |
Thielaviopsis spp. |
The pathogen was incubated at 25 degrees C with alternating periods of light and dark (12hr. each per day). This is a top view of the culture plate at 4 days. |
| 5426788 |
Pestalotia fungi |
Pestalotia spp. |
top view at 2 days, 25C |
| 5426789 |
Pestalotia fungi |
Pestalotia spp. |
bottom view at 4 days, 25C |
| 5426768 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
bottom view of culture plate at 2 days |
| 5426769 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
top view of culture plate at 6 days |
| 5426758 |
anthracnose |
Colletotrichum spp. |
top view at 6 days at 25C |
| 5426752 |
anthracnose |
Colletotrichum spp. |
bottom view at 2 days at 25C |
| 5426753 |
anthracnose |
Colletotrichum spp. |
top view at 2 days at 25C |
| 5426754 |
anthracnose |
Colletotrichum spp. |
top view at 4 days at 25C |
| 5426755 |
anthracnose |
Colletotrichum spp. |
bottom view at 4 days at 25C |
| 5426756 |
anthracnose |
Colletotrichum spp. |
|
| 5426757 |
anthracnose |
Colletotrichum spp. |
bottom view at 6 days at 25C |
| 5426760 |
Fusarium root rot and wilt |
Fusarium oxysporum |
bottom view of culture plate at 2 days |
| 5426761 |
Fusarium root rot and wilt |
Fusarium oxysporum |
top view of culture plate at 2 days |
| 5426762 |
Fusarium root rot and wilt |
Fusarium oxysporum |
bottom view of culture plate at 4 days |
| 5426763 |
Fusarium root rot and wilt |
Fusarium oxysporum |
top view of culture plate at 4 days |
| 5426764 |
Fusarium root rot and wilt |
Fusarium oxysporum |
bottom view of culture plate at 6 days |
| 5426765 |
Fusarium root rot and wilt |
Fusarium oxysporum |
top viewof culture plate at 6 days |
| 5426766 |
Fusarium root rot and wilt |
Fusarium oxysporum |
image taken after 2 days of growth on APDA at 25C |
| 5426770 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
top view of culture plate at 2 days |
| 1570781 |
Penicillium fungi |
Penicillium spp. |
Penicillium digitatum (left) and P. italicum (right) reverse colony color. May 1994 |
| 1570782 |
blue mold |
Penicillium italicum |
Penicillium italicum on 15 ppm OPP (left) and non-amended Harding's medium (right). May 1994 |
| 1570788 |
blue mold |
Penicillium italicum |
Penicillium italicum resistant (left column) and sensitive (right column) to imazalil growing on unamended (top row) and 0.1 ppm imazalil (bottom row). |
| 1570797 |
green mold |
Penicillium digitatum |
Color variation in Penicillium digitatum growing on 15 ppm OPP. May 1994 |
| 1570815 |
blue mold |
Penicillium italicum |
Reverse colony color variation in Penicillium italicum on Harding's medium. April 1994 |
| 1570148 |
green mold |
Penicillium digitatum |
Growth inhibition of Penicillium digitatum on imazalil-amended potato dextrose agar. Note that the fungus is growing in the inoculum plug (no fungicide), but not on the fungicide-amended medium. |
| 1570178 |
green mold |
Penicillium digitatum |
Preparing a spore suspension of Penicillium digitatum. Left: slant culture of P. digitatum on potato dextrose agar. Center: dense spore suspension after washing spores from surface of slant and filtering through cheesecloth. Right: spore suspension adjusted to a concentration of 1 x 106 spores/ml. October 1990 |
| 1570149 |
green mold |
Penicillium digitatum |
Colony reverse. Imazalil-resistant Penicillium digitatum growing on imazalil-amended potato dextrose agar. Colony started from 10 mm agar plug. Colony becomes raised and striated on fungicide-amended agar. May 1990 |
| 1570150 |
green mold |
Penicillium digitatum |
Normal growth of Penicillium digitatum on potato dextrose agar. |
| 1570146 |
green mold |
Penicillium digitatum |
Imazalil-resistant Penicillium digitatum growing on imazalil-amended potato dextrose agar. Colony started from 10 mm agar plug. Colony becomes raised and striated on fungicide-amended agar. |
| 1570147 |
green mold |
Penicillium digitatum |
Sectoring in Penicillium digitatum on imazalil-amended potato dextrose agar. Both Petri plates were infested with the same isolate of P. digitatum. Right plate: the fungus has produced a sector that is growing faster than the original colony. May 1990 |
| 1570151 |
green mold |
Penicillium digitatum |
Three sectors of Penicillium digitatum emerging from original colony. Medium is potato dextrose agar. |
| 1570152 |
green mold |
Penicillium digitatum |
A single sector has overgrown the original colony of Penicillium digitatum. Sectoring is a common phenomenon in P. digitatum. |
| 1570154 |
green mold |
Penicillium digitatum |
Germinated spores of Penicillium digitatum embedded in solid potato dextrose agar. It takes approximately 18 hours at 25 oC for P. digitatum to reach this stage of growth. May 1990 |
| 1570155 |
green mold |
Penicillium digitatum |
Germinated spore of Penicillium digitatum embedded in solid potato dextrose agar. It takes approximately 18 hours at 25 oC for P. digitatum to reach this stage of growth. May 1990 |
| 1570156 |
green mold |
Penicillium digitatum |
Germinated spores of Penicillium digitatum embedded in solid potato dextrose agar amended with the fungicide imazalil. Compare to 1570155 for non-fungicide control. Hyphae are enlarged and distorted. It takes approximately 18 hours at 25 oC for P. digitatum to reach this stage of growth. May 1990 |
| 1570157 |
green mold |
Penicillium digitatum |
Germinated spores of Penicillium digitatum embedded in solid potato dextrose agar amended with the fungicide imazalil. Compare to 1570155 for non-fungicide control. Hyphae are enlarged and distorted. It takes approximately 18 hours at 25 oC for P. digitatum to reach this stage of growth. May 1990 |
| 1570173 |
green mold |
Penicillium digitatum |
Incubator set at 25 oC for growth of Penicillium digitatum on potato dextrose agar. October 1990 |
| 1570174 |
green mold |
Penicillium digitatum |
A grid of Petri plates showing the reaction of seven biotypes of Penicillium digitatum (rows) to potato dextrose agar with and without fungicide. Column 1 (far left)= no fungicide; column 2 = 1 ppm methyl benzimidazole carbamate (MBC); column 3 = 0.1 ppm imazalil; column 4 = 0.2 ppm imazalil; column 5 = 0.3 ppm imazalil. All isolates that grew on MBC (rows 1, 4 and 6) grew very little on 0.3 ppm imazalil. Conversely, all isolates that do not grow on MBC (rows 2, 3, 5 and 7) are growing well on 0.3 ppm imazalil. This demonstrates the cost associated with double resistance. |
| 1570175 |
green mold |
Penicillium digitatum |
In vitro bioassay for fungicide resistance in Penicillium digitatum. Agar plug containing 24-hour-old germlings of Penicillium digitatum, was transferred to the center of a Petri dish containing imazalil-amended potato dextrose agar. After 5 days incubation at 25oC, the imazalil-sensitive isolate has not grown beyond the initial inoculum plug. October 1990 |
| 1570176 |
green mold |
Penicillium digitatum |
In vitro bioassay for fungicide resistance in Penicillium digitatum. Agar plug containing 24-hour-old germlings of Penicillium digitatum, are transferred to the center of a Petri dish containing imazalil-amended potato dextrose agar. After 5 days incubation at 25oC, colony diameter is measured. October 1990 |
| 1570177 |
green mold |
Penicillium digitatum |
Measuring radial colony growth of Penicillium digitatum. In vitro bioassay for fungicide resistance in P. digitatum. Agar plug containing 24-hour-old germlings of Penicillium digitatum, are transferred to the center of a Petri dish containing imazalil-amended potato dextrose agar. After 5 days incubation at 25oC, colony diameter is measured and compared to growth on non-amended agar. October 1990 |
| 1570197 |
green mold |
Penicillium digitatum |
Isolates of Penicillium digitatum stored on silica gel. October 1990 |
| 1570199 |
green mold |
Penicillium digitatum |
Isolates of Penicillium digitatum stored on silica gel. March 1991 |
| 1570200 |
green mold |
Penicillium digitatum |
Preparation of inoculum plugs of Penicillium digitatum for fungicide resistance bioassay. April 1991 |
| 1570201 |
green mold |
Penicillium digitatum |
The relationship of inoculum density to growth of Penicillium digitatum on fungicide-amended medium. A range of spore concentrations (0.4, 0.8, 1.6, 3.2 6.3 and 12.6 x 106spores/ml) were spread over the surface of potato dextrose agar amended with 0.3, 0.5 and 0.7 ppm imazalil. Results show that very large fluctuations in inoculum concentration are needed in order to have a measureable effect on growth. August 1991 |
| 1570505 |
whisker mold |
Penicillium ulaiense |
Penicillium ulaiense (cause of citrus whisker mold) producing clear exudate on Harding's medium. July 1992 |
| 1570528 |
whisker mold |
Penicillium ulaiense |
Penicillium ulaiense growing on thiabendazole-amended Harding's medium. Note the high level of coremium production. November 1992 |
| 1570561 |
whisker mold |
Penicillium ulaiense |
The type isolate of Penicillium ulaiense on malt extract agar. Note the extensive production of coremia. April 1993 |
| 1570562 |
whisker mold |
Penicillium ulaiense |
A California isolate of Penicillium ulaiense on malt extract agar. Note the extensive production of coremia and concentric rings of the culture. April 1993 |
| 1570563 |
whisker mold |
Penicillium ulaiense |
A California isolate of Penicillium ulaiense on malt extract agar. Note the extensive production of coremia and concentric rings of the culture. April 1993 |
| 1570564 |
whisker mold |
Penicillium ulaiense |
The type isolate (left) and a California isolate (right) of Penicillium ulaiense on malt extract agar. Note the extensive production of coremia and concentric rings of the culture. April 1993 |
| 1570395 |
green mold |
Penicillium digitatum |
Culture of Penicillium digitatum showing a sector with a different growth pattern and texture. February 1992 |
| 5407886 |
anthracnose |
Gnomonia spp. |
|
| 5407885 |
bacterial spot |
Xanthomonas spp. |
|
| 5407883 |
Phytophthora root and crown rots |
Phytophthora spp. |
|
| 5407882 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
|
| 5407878 |
Botryosphaeria rots and cankers |
Botryosphaeria spp. |
|
| 5407879 |
anthracnose |
Colletotrichum spp. |
|
| 5407880 |
Fusarium wilts, blights, rots and damping-off |
Fusarium spp. |
|
| 5407881 |
Phomopsis cankers and twig blights |
Phomopsis spp. |
|
| 5408624 |
building |
|
homestead on the Okefenokee |
| 5408716 |
Phytophthora root and crown rots |
Phytophthora spp. |
Image shows samples of field soil (25 cm2) from Fraser fir production sites, flooded with 40 ml of distilled water. Rhododendron leaf disks were floated on the water surface as a bait for zoospores of Phytophthora spp. Leaf disks are typically removed after 24 hours and plated on selective medium for detection of Phytophthora. |
| 5408717 |
Phytophthora root rot |
Phytophthora cinnamomi |
Phytophthora cinnamomi growing from Fraser fir root samples on PARPH-V8 agar, approximately 48 hours after plating. |
| 5408718 |
Phytophthora root rot |
Phytophthora cinnamomi |
Phytophthora cinnamomi growing from Fraser fir root samples on PARPH-V8 agar, approximately 48 hours after plating. |
| 5406101 |
Thousand Cankers Disease |
Geosmithia morbida |
Cultured Geosmithia colony in yeast phase. |
| 5406102 |
Thousand Cankers Disease |
Geosmithia morbida |
Cultured Geosmithia colony in yeast phase. |
| 5406099 |
Thousand Cankers Disease |
Geosmithia morbida |
Geosmithia in PDA agar growing from walnut twig beetle. View from underside of Petri dish.
|
| 5406097 |
Thousand Cankers Disease |
Geosmithia morbida |
Sporulating Geosmithia in PDA agar. |
| 5406098 |
Thousand Cankers Disease |
Geosmithia morbida |
Sporulating Geosmithia in PDA agar. View from underside of Petri dish. |
| 5079060 |
Southern bacterial wilt |
Ralstonia solanacearum (except Race 3 Biovar 2) |
Appearance of Ralstonia solanacearum on Tetrazolium medium (TZC). |
| 5390541 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
Rhizoctonia solani mycelium from culture on PDA; isolated from rice; rice sheath blight |
| 5338043 |
fire blight |
Erwinia amylovora |
|
| 5338044 |
fire blight |
Erwinia amylovora |
|
| 5364061 |
Fusarium damping-off |
Fusarium oxysporum f.sp. cepae |
Cultures of onion Fusarium on Komada medium in the laboratory. |
| 5364062 |
Fusarium damping-off |
Fusarium oxysporum f.sp. cepae |
Cultures of onion Fusarium on Komada medium in the laboratory. |
| 5361397 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
White mold (Sclerotinia sclerotiorum) sclerotia on potato dextrose agar in the laboratory. Isolated from common bean (Phaseolus vulgaris L.) |
| 5364060 |
botrytis rot |
Botrytis allii |
Cultures of onion Botrytis on potato dextrose agar in the laboratory. |
| 5372841 |
Kutilakesa fungus |
Kutilakesa pironii |
PDA 19 day old cultures. Isolated from edible fig {Ficus carica). |
| 5195049 |
seed bug |
Dieuches armatipes |
|
| 5195050 |
seed bug |
Dieuches armatipes |
|
| 5202004 |
sudden oak death |
Phytophthora ramorum |
inoculating leaf with agar cube containing the pathogen |
| 5202008 |
sudden oak death |
Phytophthora ramorum |
|
| 5202009 |
sudden oak death |
Phytophthora ramorum |
|
| 5201047 |
citrus canker |
Xanthomonas citri |
|
| 1563211 |
sweetpotato |
Ipomoea batatas |
Sweetpotato plantlet generated from apical mesistem growing in a test tube. Plants so generated are usually free of viruses. |
| 5390540 |
Rhizoctonia damping-off, blight and rot |
Rhizoctonia solani |
Sheath blight pathogen culture on PDA; isolated from rice |
| 5390470 |
bacterial panicle blight |
Burkholderia glumae |
Burkholderia glumae Colony on King’s medium B medium, note yellow green toxin production in agar |
| 5390480 |
gray leaf spot |
Magnaporthe grisea |
Ten day old colony on rice leaf agar. |
| 5372811 |
Kutilakesa fungus |
Kutilakesa madreeya |
|
| 5368817 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
Note the hard, black survival structures called “sclerotia” in culture plates. Isolated from sweet coneflower (Rudbeckia subtomentosa Pursh) |
| 1504089 |
Penicillium fungi |
Penicillium spp. |
Penicillium on MEA showing color reverse |
| 5358528 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358529 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358530 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358531 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358532 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358533 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358534 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358535 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5358536 |
Xanthomonas leaf blight of onion |
Xanthomonas axonopodis pv. allii |
Bacteriophage plaques in the laboratory - Xanthomonas leaf blight bacteria growing on culture medium. |
| 5359729 |
Fusarium wilt |
Fusarium poae |
Petri dish with Fusarium poae growing in culture. |
| 5356662 |
charcoal rots |
Macrophomina spp. |
Fungal culture of a Macrophomina species in a laboratory petri dish. |
| 5358998 |
fungus |
Sclerotium delphinii |
Southern blight (Sclerotium rolfsii) growing on a culture plate in the laboratory. |
| 5360371 |
southern blight |
Sclerotium rolfsii |
Cultures of the sclerotia of Athelia rolfsii (Sclerotium rolfsii), the causal fungus of beans southern blight, in the laboratory. |
| 5368683 |
Verticillium wilts |
Verticillium spp. |
Culture of a species of the fungus Verticillium taken from discolored xylem tissue on Acid potato dextrose agar (APDA). Isolated from red maple (Acer rubrum). |
| 5368633 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
Culture of Sclerotinia sclerotiorum on Potato Dextrose Agar (PDA). Isolated from pepper (Capsicum annuum). |
| 5338032 |
Fusarium root rot and wilt |
Fusarium oxysporum |
Fusarium oxysporum on PCNB medium (left) vs. acidified potato dextrose agar (right). Isolated from tomato (Lycopersicon esculentum). |
| 5338034 |
Phytophthora blight |
Phytophthora nicotianae |
Nonselective medium vs. selective medium: Trichoderma growing from root pieces on nonselective medium (left) vs. Phytophthora nicotianae growing from root pieces on selective medium containing hymexazole and vancomycin (right) |
| 5338035 |
black root rot |
Thielaviopsis basicola |
Carrot baiting technique for T. basicola |
| 5338033 |
Fusarium root rot and wilt |
Fusarium oxysporum |
Fusarium oxysporum on Acid potato dextrose agar (APDA). Isolated from tomato (Lycopersicon esculentum). |
| 5364063 |
pink root of onion |
Phoma terrestris |
Cultures of the onion pink root fungus, Phoma terrestris, on Sneh's medium in the laboratory. Isolated from onion (Allium cepa) |
| 5383180 |
southern blight |
Sclerotium rolfsii |
Sclertoia and mycelium on culture media Acid potato dextrose agar (APDA). Isolated from apple (Malus domestica) |
| 5383181 |
southern blight |
Sclerotium rolfsii |
Sclertoia and mycelium on culture media Acid potato dextrose agar (APDA). Isolated from apple (Malus domestica) |
| 5368634 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
Culture of Sclerotinia sclerotiorum showing black "sclerotia". |
| 5368818 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
Note the hard, black survival structures called “sclerotia” in culture plates. |
| 5372814 |
Kutilakesa fungus |
Kutilakesa madreeya |
Potato Dextrose Agar (PDA) slants from Aphelandra, Cordiaeum and Clerodendron |
| 5372813 |
Kutilakesa fungus |
Kutilakesa madreeya |
Potato Dextrose Agar (PDA) slants from Aphelandra, Cordiaeum and Clerodendron |
| 5372812 |
Kutilakesa fungus |
Kutilakesa madreeya |
Potato Dextrose Agar (PDA) slants from Aphelandra, Cordiaeum and Clerodendron |
| 5372599 |
Gibberella fungus |
Gibberella tricincta |
Fusarium tricinetum in culture (red) bottom |
| 5372600 |
Gibberella fungus |
Gibberella tricincta |
Fusarium tricinetum in culture (red) top |
| 5372253 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372254 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372252 |
zonate leaf spot |
Grovesinia pyramidalis |
|
| 5372186 |
stem canker |
Leptosphaeria coniothyrium |
|
| 5372187 |
stem canker |
Leptosphaeria coniothyrium |
|
| 5372185 |
stem canker |
Leptosphaeria coniothyrium |
|
| 5372184 |
stem canker |
Leptosphaeria coniothyrium |
|
| 5358951 |
people |
|
A roadside scene in Malawi in Africa. |
| 5359732 |
Dutch elm disease |
Ophiostoma ulmi |
Dutch elm disease fungus (described here as Ceratocystis ulmi) growing in a petri dish in the laboratory. |
| 5359733 |
Dutch elm disease |
Ophiostoma ulmi |
Dutch elm disease fungus (described here as Ceratocystis ulmi) growing in a petri dish in the laboratory. |
| 5357523 |
Sclerotinia rot |
Sclerotinia sclerotiorum |
A culture plate of the white mold fungus Sclerotinia sclerotiorum in the laboratory. |
| 5365220 |
common wheat |
Triticum aestivum |
Baking bread in a primitive oven. |
| 5361376 |
bacterial leaf spot |
Pseudomonas syringae |
Cultures of bean halo blight colonies giving off black light fluorescence on artificial media in the laboratory. |
| 5361375 |
bacterial leaf spot |
Pseudomonas syringae |
Cultures of bean halo blight colonies on artificial media in the laboratory. |
| 5361374 |
bacterial leaf spot |
Pseudomonas syringae |
Cultures of bean halo blight colonies on artificial media in the laboratory. |
| 5358868 |
common bean |
Phaseolus vulgaris |
Preparation of Xanthomonas campestris pv. phaseoli cultures for inoculation of common bean plants in the greenhouse. |
| 5052048 |
Gliocladium roseum |
Gliocladium roseum |
|
| 5052049 |
Gliocladium roseum |
Gliocladium roseum |
|
| 5259063 |
common scab of potato |
Streptomyces scabiei |
Streptomyces scabies pathogenic isolates |
| 1504088 |
Botryodiplodia fungi |
Botryodiplodia spp. |
Botryodiplodia culture |
| 1504090 |
Aspergillus fungi |
Aspergillus spp. |
Aspergillis sp. culture |
| 1504091 |
Pestalotia fungi |
Pestalotia spp. |
Pestalotia sp. culture |
| 1504092 |
Pestalotia fungi |
Pestalotia spp. |
Pestalotia sp. on Potato Dextrose Agar (PDA) |
| 1504093 |
Gibberella stalk rot |
Gibberella zeae |
Fusarium roseum on Potato Dextrose Agar (PDA) |
| 1501106 |
juniper witches' broom rust |
Gymnosporangium nidus avis |
Fusiform rust; telia culture on oak leaves; Greenhouse |
| 5058068 |
shiitake |
Lentinula edodes |
shiitake farming |
| 5058069 |
shiitake |
Lentinula edodes |
shiitake farming |
| 5058070 |
shiitake |
Lentinula edodes |
shiitake farming |
| 5050042 |
chestnut blight or canker |
Cryphonectria parasitica |
|
| 5038014 |
oak wilt |
Ceratocystis fagacearum |
|
| 2714003 |
pruning (general) |
|
Pruning - 60% removal of live crown length in Douglas-fir near Mossy Rock, (Stand Management Coop./Langbell Road Installation) |
| 2714004 |
pruning (general) |
|
Pruning - 60% removal of live crown length on Douglas-fir near Federation Forest, (Stand Management Coop./East Twin Installation) |
| 2714005 |
pruning (general) |
|
Pruning - 40% removal of live crown length on Douglas-fir near Mossy Rock,(Stand Management Coop./Longbell Road Installation) |
| 0010059 |
nursery operations |
|
After they are sown, the seedlings are moved out into the growing area. Many container nurseries place the containers on specially-designed benches that promote air pruning of the roots. Some benches are constructed on rollers so that they can be moved together when access is not required. This feature is popular because less valuable growing space is wasted. |
| 0010068 |
rooted/unrooted cuttings |
|
Although most container tree nurseries produce only seedlings, some rooted cuttings are being grown for special purposes, such as tree improvement. These coast redwood mother plants will provide cuttings of trees selected for fast growth and good wood characteristics. Cuttings are also used when seed from a particular seed zone is scarce. |
| 4822044 |
Fusarium root rot and wilt |
Fusarium oxysporum |
fungi in agar plate |
| 4822081 |
Phytophthora basal canker |
Phytophthora palmivora |
diagnostic culture from infected tree |
| 4823067 |
Leptographium root disease |
Leptographium procerum |
Fungi culture |
| 4823068 |
Leptographium root disease |
Leptographium procerum |
Fungi culture |
| 4824099 |
Cylindrocladium blight and root rot |
Cylindrocladium scoparium |
Healthy seedlings (see image 4824100) |
| 4799047 |
fertilization |
|
Deep placement of N-Sol (32% liquid nitrogen) 20" deep before planting cottonwood cuttings. Increased growth has been achieved when used on land that has been in row crop production for numerous years. It is placed deep in the soil to avoid uptake by competing herbaceous vegetation and to give young cottonwoods a boost in early years. in Fitler, Mississippi |
| 4799048 |
fertilization |
|
Deep placement of N-Sol (32% liquid nitrogen) 20" deep before planting cottonwood cuttings. Increased growth has been achieved when used on land that has been in row crop production for numerous years. It is placed deep in the soil to avoid uptake by competing herbaceous vegetation and to give young cottonwoods a boost in early years. in Fitler, Mississippi |
| 4799049 |
mechanical |
|
Windrowing in harvested cottonwood plantation with Symonds rake in Fitler, Mississippi |
| 4800028 |
mechanical |
|
Site prepared by ripping (subsoiling). Ripping of droughty, rocky soils is completed a few months before planting. The "rip" or "trench" is filled by loose soil materials providing for easier tree planting and an improved root environment. McCurtain county, Oklahoma |
| 0355040 |
Lentinus mushrooms |
Lentinus spp. |
drilling bolts for innoculation |
| 0355041 |
Lentinus mushrooms |
Lentinus spp. |
placing inoculum plug |
| 0355042 |
Lentinus mushrooms |
Lentinus spp. |
driving dowel into inoculation hole |
| 0355043 |
Lentinus mushrooms |
Lentinus spp. |
cross-section of inocullum plug in hardwood bolt |
| 0355044 |
Lentinus mushrooms |
Lentinus spp. |
inoculated bolts racked for incubation |
| 0355046 |
Lentinus mushrooms |
Lentinus spp. |
inoculated bolts racked for incubation |
| 0355047 |
Lentinus mushrooms |
Lentinus spp. |
drilling inoculation hole in bolt |
