| 1573313 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy stem blight typically starts at leaf margins. Note the small black dots (pycnidia of the pathogen) in the tan lesion. June 1997 |
| 1574155 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Micrograph of pycnidia of D. bryoniae on cucumber cultivar Napoleon at 31X magnification. |
| 1574153 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Micrograph of pycnidia of D. bryoniae on cucumber cultivar Napoleon. |
| 1574152 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy stem blight caused the large lesion in the center. Other smaller lesions were caused by target spot. |
| 1574151 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy stem blight caused the large lesion in the center. Other smaller lesions were caused by target spot. |
| 1574150 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Fruiting bodies (pycnidia) of the pathogen are evident in the lesion as tiny black dots. |
| 1574149 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 1574007 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Watermelon plants left untreated can become completely necrotic from gummy stem blight (see 1574009 for comparison with treated plot). September 1997 |
| 1574009 |
gummy stem blight (vine decline) |
Didymella bryoniae |
This research plot was treated with chlorothalonil (Bravo) or mancozeb and controlled gummy stem blight very well (see 1574007 for comparison with untreated plot). September 1997 |
| 1574008 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Small plot research on fungicidal control of gummy stem blight showing various levels of disease control. September 1997 |
| 1574006 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Close-up of small gummy stem blight lesions. September 1997 |
| 1574004 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Close-up of lesion at leaf margin, where infection usually begins. September 1997 |
| 1574005 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Severely diseased leaf. September 1997 |
| 1574001 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Rot progressing from the blossom end of fruit. September 1997 |
| 1574002 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Pycnidia on stem lesion. September 1997 |
| 1574003 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Pycnidia on stem lesion. September 1997 |
| 1573997 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Non-sprayed control plot (left row) in a fungicide evaluation trial on gummy stem blight of watermelon. September 1997 |
| 1573998 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Non-sprayed control plot (left row) in a fungicide evaluation trial on gummy stem blight of watermelon. September 1997 |
| 1573314 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Leaf spotting caused by gummy stem blight. Note the small black dots (pycnidia of the pathogen) in the largest tan lesion. June 1997 |
| 1573312 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Micrograph of conidia oozing from a pycnidium of Phoma cucurbitacearum (anamorph of Didymella bryoniae). June 1997 |
| 1573311 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Micrograph of conidia oozing from a pycnidium of Phoma cucurbitacearum (anamorph of Didymella bryoniae). June 1997 |
| 5480099 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480100 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480101 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480102 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480066 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480067 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480068 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480070 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480071 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480073 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480076 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480077 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480078 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480079 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480080 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480081 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480082 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480083 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480084 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480085 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480086 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480087 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480088 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480089 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480090 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480091 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480092 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480093 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480094 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480095 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5479994 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5479995 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5479996 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5479997 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5479998 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5479999 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480001 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5480002 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 5472857 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy stem blight lesions on watermelon leaf. |
| 5472858 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy stem blight lesions on watermelon crown leaves and crown. |
| 5472855 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy stem blight lesion at the base of a watermelon plant. |
| 5472856 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy stem blight lesions on watermelon crown and vines. |
| 5457967 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Symptoms developing on fruit post harvest. |
| 0454020 |
ray (flower) blight of chrysanthemum |
Didymella ligulicola |
Chrysanthemum leaf with lesion caused by Didymella ligulicola. |
| 1234093 |
gummy stem blight (vine decline) |
Didymella bryoniae |
to leaf |
| 1436116 |
gummy stem blight (vine decline) |
Didymella bryoniae |
to fruit |
| 1234192 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 1436117 |
gummy stem blight (vine decline) |
Didymella bryoniae |
to leaf |
| 1436112 |
gummy stem blight (vine decline) |
Didymella bryoniae |
to leaf |
| 1234191 |
gummy stem blight (vine decline) |
Didymella bryoniae |
|
| 1436113 |
gummy stem blight (vine decline) |
Didymella bryoniae |
to stem |
| 1563054 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in the field in North Carolina. Notice yellowing of the center of the rows. |
| 1563055 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in the field in North Carolina. Typical folliar symptoms. Wilted leaves are due dry soil. |
| 1563056 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in the field in North Carolina. Typical, early folliar symptoms. Notice necrosis on leaf margins |
| 1563057 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in the field in North Carolina. Late folliar symptoms. Notice marginal necrosis. |
| 1563058 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in the field in North Carolina. Late folliar symptoms. Notice marginal necrosis. |
| 1563059 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in the field in North Carolina. Close up of late folliar symptoms. |
| 1563061 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in North Carolina. Close up of foliar lesion showing black pycnidia embedded in necrotic tissue on adaxial surface. |
| 1563062 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in North Carolina. Close up of foliar lesion showing black pycnidia embedded in necrotic tissue on adaxial surface. |
| 1563063 |
gummy stem blight (vine decline) |
Didymella bryoniae |
The anamorph, Phoma cucurbitacearum, occurs in North Carolina. Close up of foliar lesion showing black pycnidia embedded in necrotic tissue on adaxial surface. |
| 5335098 |
spur blight |
Didymella applanata |
on raspberry |
| 5335099 |
spur blight |
Didymella applanata |
on raspberry |
| 5368351 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Stained, asexual spores of the fungal anamorph, Phoma cucurbitacearum. |
| 5368857 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Dark brown leaf spots often with concentric rings. |
| 5368858 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Close-up of leaf spots with concentric rings. |
| 5368859 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Close-up of leaf spots with concentric rings. Spots often occur along margins of leaves. |
| 5368860 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Earlier stage of leaf spot development before all infected tissue turns dark brown. |
| 5368887 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Asexual spore-producing structures "pycnidia" with spores oozing out, seen in infected tissue. |
| 5369017 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Conidia enbedded in infected leaf tissue under darkfield observation. |
| 5369018 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Asexual spores of the fungal anamorph, Phoma cucurbitacearum. |
| 5369019 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Dark brown leaf spots often with concentric rings. |
| 5369020 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Close-up of dark brown leaf spot with concentric rings.
|
| 1263082 |
ray (flower) blight of chrysanthemum |
Didymella ligulicola |
dieback of cuttings |
| 1263086 |
ray (flower) blight of chrysanthemum |
Didymella ligulicola |
|
| 0656089 |
ray (flower) blight of chrysanthemum |
Didymella ligulicola |
Symptoms of Didymella ligulicola on flowering stems of chrysanthemum. Black and white image |
| 5077012 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy Stem Blight on Watermelon (Didymella bryoniae); Stems show dark, water-soaked lesions often containing black, "pimple-like" fruiting structures. |
| 5077021 |
gummy stem blight (vine decline) |
Didymella bryoniae |
Gummy Stem Blight on Watermelon (Didymella bryoniae); Brown to black lesions that sometimes contain concentric rings. Black "pycnidia" can be observed with hand lens. Lesions appear water- soaked or ashy. |
