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Vegetables: Cucumber

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Image Subject Name Scientific Name Description
1563129 unknown virus Cucumbers showing mosaic symptoms caused by a virus. 
1563175 cucumber Cucumis sativus Evaluation of experimental cucumber harvester.  (Jul95).
1563174 cucumber Cucumis sativus Evaluation of experimental cucumber harvester.  (Jul95).
1563011 anthracnose Colletotrichum orbiculare Notice how centers of the leaf spots tend to fall out.
1563171 cucumber Cucumis sativus Washing and grading cucumbers in the field in eastern North Carolina. Jul73
1563172 cucumber Cucumis sativus Washing and grading "slicer" cucumbers in the field in eastern North Carolina. Jul73
1563173 cucumber Cucumis sativus Equipment for harvesting, washing and grading cucumbers in the field in eastern North Carolina. Notice pickers riding very low at the rear.  Jul73
1563177 cucumber Cucumis sativus Buying station for cucumbers in eastern North Carolina. Jul75
1563178 cucumber Cucumis sativus Cucumber buying station in eastern North Carolina.  Jul75
1563179 cucumber Cucumis sativus Moving cucumbers for pickling into grading and washing building.  Water in the dump tank often contains chlorine cushions the cucumbers when unloaded.
1563166 cucumber Cucumis sativus Oct87.  Healthy cucumber in Eastern North Carolina.  Sandy soil.
1563167 cucumber Cucumis sativus Oct74 field in eastern NC.  Two tobacco curing barns in background.  Baskets used for harvesting.
1563168 cucumber Cucumis sativus Phil Denlinger Operations Manager, Charles Averre Plant Patholgy, Bob Quin Field Manager at home office Apr97.  
1563169 cucumber Cucumis sativus Mr. Crocker purchasing cucumbers for Mt. Olive Pickle Co., George Hughes NCSU Horticulture Specialist, and Phil Denlinger County Agent inspecting a field in eastern North Carolina.  Jul73
1563170 cucumber Cucumis sativus Packing cucumbers in baskets on a trailer in the field in eastern NC.  Jul73
1563084 Phytophthora blight Phytophthora capsici Abundant sporulation occurs on the surface growth.  Phtophthora Fruit Rot
1563067 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Belly rot usually begins on the underside and blossom end of the fruit where contact is made with the soil.  Surface of lesions become crusty.   Usually the infection remains on the surface and the fruit does not rot. 
1563068 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Belly rot usually begins on the underside and blossom end of the fruit where contact is made with the soil.  Surface of lesions become crusty.   Usually the infection remains on the surface and the fruit does not rot.
1563069 Rhizoctonia damping-off, blight and rot Rhizoctonia solani Early infection.  Belly rot usually begins on the underside and blossom end of the fruit where contact is made with the soil.  Surface of lesions become crusty.   Usually the infection remains on the surface and the fruit does not rot.
1563130 frost and winter injury (general) Cold injury on cotyledons
1563131 cucumber Cucumis sativus Showing excessive planting depth
1563161 cucumber Cucumis sativus
1563162 cucumber Cucumis sativus
1563163 cucumber Cucumis sativus
1563115 root-knot nematode Meloidogyne spp. Transition area in "hot spot."
1563116 root-knot nematode Meloidogyne spp. Root-knot nematode galls on mature cucumber plant.
1563117 root-knot nematode Meloidogyne spp. Root-knot galls on seedlings. 
1563118 root-knot nematode Meloidogyne spp. Root-knot galls on seedlings.
1563119 root-knot nematode Meloidogyne spp. Root-knot galls on very young seedlings. 
1563120 root-knot nematode Meloidogyne spp. Root-knot galls on very young seedling. 
1563121 root-knot nematode Meloidogyne spp. Root-knot gall on large plant. 
1563122 root-knot nematode Meloidogyne spp. Root-knot galls on large plant.
1563123 root-knot nematode Meloidogyne spp. Root-knot gall on mature plant.  The large yellowish galls have started to deteriorate. 
1563124 charcoal rot Macrophomina phaseolina 09Sep93
1563125 edema Notice pimple at the far left and afew scattered in the center. 
1563127 edema
1563105 Corynespora blight Corynespora cassiicola Close up (ca.40x) of leaf spot showing long, black threadlike conidiophores.
1563085 Phytophthora blight Phytophthora capsici
1563107 Corynespora blight Corynespora cassiicola Close up (ca. 100x) of leaf spot showing long, black threadlike conidiophores.
1563108 Corynespora blight Corynespora cassiicola Close up (ca.200x) of leaf spot showing long, black threadlike conidiophores.
1563109 Corynespora blight Corynespora cassiicola Photomicrograph (ca. 400x) showing conitiophores and conidia)Close up (ca.40x) of leaf spot showing long, black threadlike conidiophores.
1563110 root-knot nematode Meloidogyne spp. Field distribution of symptomatic plants showing a "hot spot" with diffuse borders.  Older leaves tend to turn yellow and die.   Notice missing plants.
1563111 root-knot nematode Meloidogyne spp. Field distribution of symptomatic plants.  Older leaves tend to turn yellow and die. 
1563094 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  
1563095 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  Notice angularity of spots. 
1563096 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  Notice angularity of spots.
1563097 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  Notice angularity of spots.  
1563098 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  Close up of a spot.
1563100 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  Photomicrograph (40x) of abaxial surface of leaf spot showhing black conidiophores.  Notice sand particles.  
1563102 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.   Photomicrograph at 100x showing abundant, pale gray, hairy conidiophores on abaxial surface of leaf spot.  
1563103 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  Photomicrograph of abaxial surface of leaf spot showing abundant, black conidiophores.  Notice size of leaf hairs. 
1563104 Corynespora blight Corynespora cassiicola Corynespora blight tends to be serious in late summer and fall in North Carolina.  Close up of leaf spot on abaxial leaf surface.  
1563074 powdery mildew Podosphaera fuliginea Powdery mildew of cucumbers is a serious and common problem in greenhouses.
1563075 powdery mildew Podosphaera fuliginea Powdery mildew of cucumbers is a serious and common problem in greenhouses in North Carolina .
1563076 powdery mildew Podosphaera fuliginea Powdery mildew of cucumbers is a serious and common problem in greenhouses in North Carolina
1563078 powdery mildew Podosphaera fuliginea Photomicrograph at 200x of conidia and conidiphores of Sphaerotheca fuliginea on a clear tape mount in water. 
1563080 powdery mildew Podosphaera fuliginea Photomicrograph at 400x of conidia and conidiphores of Sphaerotheca fuliginea on a clear tape mount in water. 
1563081 Pythium diseases Pythium spp. Pythium Cottony Leak or Pythium Fruit Rot can be common during hot/wet weather in North Carolina. 
1563082 Pythium diseases Pythium spp. In a moist chamber Pythium spp will form extensive, cottony, mycelial growth. 
1563083 Pythium diseases Pythium spp. Pythium Cottony Leak or Pythium Fruit Rot can be common during hot/wet weather in North Carolina.  Initially the fruit lesions are brownish, water soaked, and soft.  Often infection starts on tissue in contact with soil. 
1563086 scab Cladosporium cucumerinum
1563087 scab Cladosporium cucumerinum
1563088 Tomato Ringspot Virus Nepovirus ToRSV Notice reduced growth of vines and clumping of symptomatic plants.
1563089 Tomato Ringspot Virus Nepovirus ToRSV Notice yellowing and dead lower leaves.  Upper leaves are small. 
1563090 Tomato Ringspot Virus Nepovirus ToRSV
1563091 Tomato Ringspot Virus Nepovirus ToRSV
1563092 Tomato Ringspot Virus Nepovirus ToRSV
1563093 Tomato Ringspot Virus Nepovirus ToRSV Infected plants tend to be clumped reflecting presence of the daggar nematode vector.  Notice small leaves and much shortened internodes.
1563070 bacterial wilt Erwinia tracheiphila Typically a single vine, or half a vine, is affected. 
1563072 bacterial wilt Erwinia tracheiphila Typically a single vine, or half a vine, is affected.
1563073 bacterial wilt Erwinia tracheiphila By squeezing a cut stem bacterial ooze may be drawn out in long theads from affected vines.
1563064 gray mold Botrytis cinerea
1563047 downy mildew Pseudoperonospora cubensis Photomicrograph at 30x of downy mildew leafspot on abaxial surface.  The dark colored sporangia can be seen on the sporangiophores.
1563048 downy mildew Pseudoperonospora cubensis Photomicrograph at 30x of downy mildew leafspot on abaxial surface.  The dark colored sporangia can be seen on the sporangiophores.  Notice size of leaf hairs.
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.
1563001 anthracnose Colletotrichum orbiculare Plant breeder evaluation of cultivars for disease resistance.  Far left row shows resistance to anthracnose.  Second row appears susceptible. 
1563002 anthracnose Colletotrichum orbiculare Left, Lewis Howe, County Agent and right Jamie Driver, Research Technician evaluating fungicides for controlling foliar diseases.  Note sandy soil typical of cucumber fields in eastern North Carolina. 
1563003 anthracnose Colletotrichum orbiculare Devastating consequences of anthracnose.
1563004 anthracnose Colletotrichum orbiculare Devastating effect of anthracnose in a commercial cucumber field in eastern North Carolina.  (ca. 1970)
1563005 anthracnose Colletotrichum orbiculare Volunteer cucumber seedlings following the spring crop provide inoculum for fall crop.
1563006 anthracnose Colletotrichum orbiculare anthracnose and downy mildew on the same plant
1563007 anthracnose Colletotrichum orbiculare Postharvest symptoms of anthracnose on slicing cucumber in the fall crop. 1962
1563008 anthracnose Colletotrichum orbiculare
1563009 anthracnose Colletotrichum orbiculare
1563010 anthracnose Colletotrichum orbiculare
1563012 anthracnose Colletotrichum orbiculare Close up of anthracnose leafspot showing slightly raised, salmon-colored acervuli with black, hair-like setae protruding.  Adaxial leaf surface. 
1563013 anthracnose Colletotrichum orbiculare Photomicrograph (400x) showing a leaf hair, three black setae, and many single cell conidia from a wet mount of an anthracnose leaf spot. 
1563014 anthracnose Colletotrichum orbiculare Photomicrograph (400x) showing a leaf hair, three black setae, and many single cell conidia from a wet mount of an anthracnose leaf spot.
1563015 anthracnose Colletotrichum orbiculare Photomicrograph (400x) showing hyaline, elongated, single celled conidia and black setae with pointed tips. 
1563016 anthracnose Colletotrichum orbiculare Photomicrograph (400x) showing hyaline, elongated, single celled conidia and black setae with pointed tips.
1563017 angular leaf spot of cucumber Pseudomonas syringae pv. lachrymans Notice defoliation in second row.
1563018 angular leaf spot of cucumber Pseudomonas syringae pv. lachrymans
1563019 angular leaf spot of cucumber Pseudomonas syringae pv. lachrymans
1563020 angular leaf spot of cucumber Pseudomonas syringae pv. lachrymans Notice that lesions are delimited by veins in the leaf.
1563021 angular leaf spot of cucumber Pseudomonas syringae pv. lachrymans Notice that lesions are delimited by veins in the leaf.
1563022 angular leaf spot of cucumber Pseudomonas syringae pv. lachrymans Notice that lesions tend to be delimited by veins in leaf.
1563023 angular leaf spot of cucumber Pseudomonas syringae pv. lachrymans Notice that lesions tend to be delimited by veins in leaf.
1563024 downy mildew Pseudoperonospora cubensis Notice that young leaves have no lesions, older leaves have many lesions, and lower leaves are dead.  Individual leaf spots have a slight orange/yellow hue and are often angular.
1563025 downy mildew Pseudoperonospora cubensis Large cucumber field in eastern North Carolina with much downy mildew.
1563026 downy mildew Pseudoperonospora cubensis Notice orange/yellow hue of leafspots
1563027 downy mildew Pseudoperonospora cubensis Notice that older leaves show most leaf spots.  Lower leaves are dead.  Individual leaf spots have a slight orange/yellow hue and are often angular.
1563028 downy mildew Pseudoperonospora cubensis Cucumber field defoliated. 
1563029 downy mildew Pseudoperonospora cubensis Notice that older leaves show most leaf spots.  Lower leaves are dead.  Individual leaf spots have a slight orange/yellow hue and are often angular.
1563030 downy mildew Pseudoperonospora cubensis Young cucumber plants with downy mildew.  Notice that individual leaf spots have a slight orange/yellow hue and are often angular.
1563031 downy mildew Pseudoperonospora cubensis Notice that older leaves show most leaf spots.  Lower leaves are dead.  Individual leaf spots have a slight orange/yellow hue and are often angular.
1563033 downy mildew Pseudoperonospora cubensis Notice that older leaves show most leaf spots.  Lower leaves are dead.  Individual leaf spots have a slight orange/yellow hue and are often angular.
1563034 downy mildew Pseudoperonospora cubensis Downy mildew does not overwinter in North Carolina, and the spores arrive each year at different times in the summer from areas to the south.  The disease is favored by wet and hot weather. 
1563035 downy mildew Pseudoperonospora cubensis Downy mildew leaf spots are initially yellow/orange and then become necrotic with the entire leaf eventually dying. 
1563042 downy mildew Pseudoperonospora cubensis Early symptoms on young leaf
1563043 downy mildew Pseudoperonospora cubensis Photomicrograph (200x) showing sporangia, typical branching of sporangiophores, and leaf hairs. 
1563044 downy mildew Pseudoperonospora cubensis Downy mildew.  Leaf spots are angular, yellow/orange. 
1563045 downy mildew Pseudoperonospora cubensis Downy mildew.  Leaf spots are angular, yellow/orange. 
1563046 downy mildew Pseudoperonospora cubensis Close up of downy mildew.  Leaf spots are angular, yellow/orange. 

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