Charles Averre's Images
Organization: North Carolina State UniversityCountry: United States
Remove Filters:
Landscape(X)
| 375 Images of 42 Subjects | View Subject List | View Image Details | View Thumbnails |
| Image | Subject Name | Scientific Name | Description |
|---|---|---|---|
| 1563212 | Fusarium damping-off | Fusarium solani | Effect of temperature on growth of Fusarium solani and root rot |
| 1563467 | Java black rot | Lasiodiplodia theobromae | Early stages of Java Black Rot. The rot is firm, moist, and black. Look for locules in the stromatic tissue containing spores. It is a serious storage rot that develops rapidly. The fungus is often called Diplodia tubericola. (Jewel, Jan 73) |
| 1563129 | unknown virus | Cucumbers showing mosaic symptoms caused by a virus. | |
| 1563206 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | A severely pox affected sweetpotato field near intended harvest, however the field was not harvested because of severe pox occurrence. Often weedy fields indicate a pox problem (cv. Jewel, November 1978) |
| 1563218 | sweetpotato | Ipomoea batatas | Sweetpotato plantbeds. Workers removing sprouts from bedded storage roots to be used to plant fields. |
| 1563222 | sweetpotato | Ipomoea batatas | Sweetpotato slips (plants) packed in bushel boxes to be taken to the field and planted (June 1978). |
| 1563214 | Sweet Potato Feathery Mottle Virus | Potyvirus SPFMV | Sweetpotato. Foliar symptoms of Feathery Mottle Virus. Notice purple ringspots (cv.Jewel, Aug78). |
| 1563216 | sweetpotato | Ipomoea batatas | Sweetpotato field ready to be planted. (Jun69). |
| 1563527 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Fumigating pox infested soil fumigation with Telone-C17 improves stands and yield, but quality of harvested roots is not acceptable. |
| 1563597 | bacteria wilt and soft rot | Dickeya chrysanthemi | |
| 1563598 | bacteria wilt and soft rot | Dickeya chrysanthemi | |
| 1563599 | bacteria wilt and soft rot | Dickeya chrysanthemi | |
| 1563600 | bacteria wilt and soft rot | Dickeya chrysanthemi | |
| 1563648 | flooding/high water | Roots in saturated soil may asphyxiate with ethanol accumulation. Affected roots when cut open have a sweet odor, reduced latex flow, glossy appearance and rot in storage (Nov77, cv.Jewel ), in sweetpotato, this is called 'sour'. | |
| 1563647 | flooding/high water | Roots in saturated soil may asphyxiate with ethanol accumulation. Affected roots when cut open have a sweet odor, reduced latex flow, glossy appearance and rot in storage (Nov77, cv.Jewel). In sweetpotato, this condition is called "sour." | |
| 1563697 | Gibberella canker | Gibberella baccata | Chlorotic leaf distortion caused by a virus. |
| 1563650 | asphyxiation | Roots in saturated soil may asphyxiate with ethanol accumulation. Affected roots often have water soaked appearance with dark eyes. When cut open have a sweet odor, reduced latex flow, glossy appearance and rot in storage. Large root at left is healthy. (Nov77, cv.Jewel ) | |
| 1563649 | asphyxiation | 649 Roots in saturated soil may asphyxiate with ethanol accumulation. Affected roots often have water soaked appearance with dark eyes. When cut open have a sweet odor, reduced latex flow, glossy appearance and rot in storage (Nov77, cv.Jewel) | |
| 1563271 | sweetpotato | Ipomoea batatas | Sweetpotato roots, cv. 'Pope' still attached to plant after digging with a plow (Oct77). |
| 1563223 | sweetpotato | Ipomoea batatas | Sweetpotato roots were covered with too much soil and rotted in the plant bed and produced no sprouts (Apr 98 |
| 1563219 | sweetpotato | Ipomoea batatas | Sweetpotato plantbeds showing magnitude of the operation. Notice crews in background (Jun.78). |
| 1563220 | sweetpotato | Ipomoea batatas | Sweetpotato plantbeds showing magnitude of the operation. Notice crews in background (Jun.78). |
| 1563694 | Gibberella canker | Gibberella baccata | Foliar fungus, Fusarium lateritium, occasionally occurs on the adaxial leaf surface prior to opening. After the leaves are expanded the fungus is seen as a white chalky substance on the leaf margins. (Nov88) |
| 1563695 | Gibberella canker | Gibberella baccata | Foliar fungus, Fusarium lateritium, occasionally occurs on the adaxial leaf surface prior to opening. After the leaves are expanded the fungus is seen as a white chalky substance on the leaf margins. (Nov88) |
| 1563696 | Gibberella canker | Gibberella baccata | Foliar fungus, Fusarium lateritium, occasionally occurs on the adaxial leaf surface prior to opening. After the leaves are expanded the fungus is seen as a white chalky substance on the leaf margins. (Nov88) |
| 1563217 | sweetpotato | Ipomoea batatas | Sweetpotato field just planted with slips. (Jun69). |
| 1563175 | cucumber | Cucumis sativus | Evaluation of experimental cucumber harvester. (Jul95). |
| 1563174 | cucumber | Cucumis sativus | Evaluation of experimental cucumber harvester. (Jul95). |
| 1563701 | edema | Edema pustules usually are on the abaxial leaf surface. | |
| 1563702 | edema | Edema pustules on leaf. Left abaxial surface with many pustules, right adaxial surface has no pustules. | |
| 1563689 | edema | Edema are blisters forming on the surface of roots. The blisters may rupture and turn black when (Feb92, cv.Jewel) l | |
| 1563690 | edema | Cross section through an edema blister on the surface of a root. Notice the enlarged, colorless cells forming the blister that easily ruptures and turn black when colonized by microbes (Feb92, cv.Jewel) | |
| 1563691 | edema | Cross section through an edema blister on the surface of a root. Notice the enlarged, colorless cells forming the blister that easily ruptures and turn black when colonized by microbes (Feb92, cv.Jewel) | |
| 1563692 | edema | Cross section through an edema blister on the surface of a root. Notice the enlarged, colorless cells forming the blister that easily ruptures and turn black when colonized by microbes (Feb92, cv.Jewel) | |
| 1563693 | fasciation | Fasciation is characterized by very wide stems caused by the lateral fusion of buds in their formative stages. The incidence in a field is usually very low. | |
| 1563686 | edema | Photomicrograph showing enlarged cells in a blister between the periderm and parenchyma, 100x. (Jan92). | |
| 1563687 | edema | Edema are blisters forming on the surface of roots. The blisters may rupture and turn black when ruptured and colonized by microbes (Feb92, cv.Jewel). | |
| 1563688 | edema | Edema are blisters forming on the surface of roots. The blisters may rupture and turn black when ruptured and colonized by microbes (Feb92, cv.Jewel) | |
| 1563682 | edema | Edema are blisters forming on the surface of roots. The blisters may rupture and turn black when ruptured and colonized by microbes. | |
| 1563683 | edema | Photomicrograph showing enlarged cells in a blister. | |
| 1563685 | edema | Photomicrograph showing enlarged cells in a blister between the periderm and parenchyma, 100x. (Jan92) | |
| 1563662 | boron deficiency | Blister caused by boron deficiency appears as raised purple/brown spots. Scurf spots may be similar but are not raised. Spotting may occur internally especially near the vascular ring. Blister may develop in storage. (Feb92,cv.Beauregard) | |
| 1563663 | boron deficiency | Blister caused by boron deficiency appears as raised purple/brown spots. Scurf spots may be similar but are not raised. Spotting may occur internally especially near the vascular ring. Blister may develop in storage. (Feb92, Hernandez) | |
| 1563664 | boron deficiency | Blister caused by boron deficiency appears as raised purple/brown spots. Scurf spots may be similar but are not raised. Spotting may occur internally especially near the vascular ring. Blister may develop in storage. (Dec92, cv. Hernandez | |
| 1563665 | boron deficiency | Blister caused by boron deficiency appears as raised purple/brown spots. Scurf spots may be similar but are not raised. Spotting may occur internally especially near the vascular ring. Blister may develop in storage. (Feb92, cv. Hernandez) | |
| 1563678 | edema | Edema are blisters forming on the surface of roots. Lower roots also with black rot. | |
| 1563679 | edema | Edema are blisters forming on the surface of roots. | |
| 1563680 | edema | Edema are blisters forming on the surface of roots. The blisters may rupture and turn black when ruptured and colonized by microbes. | |
| 1563658 | high soluble salts | Fertilizer burn. (Jun69, cv.Centennial) | |
| 1563659 | boron deficiency | Blister caused by boron deficiency appears as raised purple/brown spots. Scurf spots may be similar but are not raised. Spotting may occur internally especially near the vascular ring. Blister may develop in storage. (Nov79) | |
| 1563641 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark streaks followed by root rotting fungi (cv.Jewel, May78). | |
| 1563642 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark streaks followed by root rotting fungi (cv.Jewel, Apr77). | |
| 1563643 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark streaks followed by root rotting fungi (cv.Jewel, Dec70). | |
| 1563645 | flooding/high water | Standing water injury. Notice raised lenticels (Sep71, cv.Jewel). | |
| 1563646 | flooding/high water | Standing water will kill the roots and then are colonized by fungi (Oct76, cv.Jewel). | |
| 1563633 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut (cv.Jewel, Dec70). | |
| 1563634 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut (cv.Jewel, Dec70). | |
| 1563635 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark color. Presence of Penicillium on the surface often indicates cold injury (cv.Jewel, Jan82). | |
| 1563636 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark color. Presence of Penicillium on the surface often indicates cold injury (cv.Jewel, Jan82). | |
| 1563637 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark color. Presence of Penicillium on the surface often indicates cold injury (cv.Jewel, Jan82). | |
| 1563638 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark color. Presence of Penicillium on the surface often indicates cold injury (cv.Jewel, Jan82). | |
| 1563639 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark color. Notice blackening of veins. Presence of Penicillium on the surface often indicates cold injury (cv.Jewel, May78). | |
| 1563640 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut. Internally the flesh may be spongy and watery and later develop cavities and dark color followed by Fusarium root rot (cv.Jewel, Dec70). | |
| 1563607 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot on harvested root. Often there is no external evidence that rot is inside the root. This causes a problem in the cannery because graders do not discard them. These roots were collected after peeling at the cannery. (cv.Jewel, Sep76). |
| 1563608 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot on harvested root. Often there is no external evidence that rot is inside the root. This causes a problem in the cannery because graders do not discard them, (cv.Jewel, Sep76). |
| 1563601 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot on harvested root. Often there is no external evidence that rot is inside the root. This causes a problem in the cannery because graders do not discard them, (cv.Jewel, Sep76). |
| 1563602 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot on harvested root. Often there is no external evidence that rot is inside the root. This causes a problem in the cannery because graders do not discard them, (cv.Jewel, Sep76). |
| 1563603 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot on harvested root. Often there is no external evidence that rot is inside the root. This causes a problem in the cannery because graders do not discard them, (cv.Jewel, Sep76). |
| 1563604 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot on harvested root. Often there is no external evidence that rot is inside the root. This causes a problem in the cannery because graders do not discard them. These roots were collected after peeling at the cannery. (cv.Jewel, Sep76). |
| 1563631 | cold injury (low temperature) | Cold injury. | |
| 1563632 | cold injury (low temperature) | Roots injured by low temperatures usually do not produce latex when cut (cv.Cntennial, May70) | |
| 1563596 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot on harvested root. Often there is no external evidence that rot is inside the root. This causes a problem in the cannery because graders do not discard them, (cv.Jewel, Sep76). |
| 1563585 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Often there is rot inside the root with little external evidence. (cv.Jewel?, Dec94). |
| 1563586 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Often there is rot inside the root with little external evidence. (cv.Jewel?, Dec94). |
| 1563587 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Often there is rot inside the root with little external evidence. This causes a problem in the cannery because graders do not discard them, (cv.Jewel?, Dec94). |
| 1563588 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Lower stem may swell, split, and have black xylem tissue. Branch vines turn black and leaves may turn yellowish.. (cv.Jewel?, Dec94). |
| 1563589 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Lower stem may swell, split, and have black xylem tissue. Branch vines turn black and leaves may turn yellowish.. (cv.Jewel?, Dec94). |
| 1563590 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Lower stem may swell, split, and have black xylem tissue. Branch vines turn black and leaves may turn yellowish.. (cv.Jewel?, Dec94). |
| 1563591 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Lower stem may swell, split, and have black xylem tissue. Branch vines turn black and leaves may turn yellowish.. (cv.Jewel?, Dec94). |
| 1563592 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Lower stem may swell, split, and have black xylem tissue. Branch vines turn black and leaves may turn yellowish.. (cv.Jewel?, Dec94). |
| 1563593 | bacteria wilt and soft rot | Dickeya chrysanthemi | Bacterial soft rot. Lower stem may swell, split, and have black xylem tissue. Branch vines turn black and leaves may turn yellowish.. (cv.Jewel?, Dec94). |
| 1563556 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions on underground stem and feeder roots. (cv.Jewel, Mar79). |
| 1563543 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox often causes distorted roots are not marketable (cv.Jewel, Nov89). |
| 1563548 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Breeding line from Louisiana L-462 is resistant to pox while the North Carolina NC-734 is susceptible. Resistance to pox is important because soil treatments are expensive and not very effective. |
| 1563554 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Two rows were fumigated with Telone-C-17 (cv.Jewel, Jul90). |
| 1563532 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste. Infection often starts where a small root is attached (cv.Jewel, Apr80). |
| 1563533 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste. Infection often starts where a small root is attached (cv.Jewel, Apr80). |
| 1563535 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste. Infection often starts where a small root is attached (cv.Jewel, Apr80). |
| 1563536 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Storage roots affected by pox are often distorted. Infection started on a small root preventing normal enlargement at the site (cv.Jewel, Nov89). |
| 1563537 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Severity of pox is enhanced in soil that is dry, high in pH and not fumigated. Compare mass of feeder roots. (cv.Jewel,Jul88). |
| 1563538 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Severity of pox is enhanced in soil that is dry, high in pH and not fumigated. Compare mass of feeder roots. (cv.Jewel,Jul88). |
| 1563539 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Severity of pox is enhanced in soil that is dry, high in pH and not fumigated. Compare mass of feeder roots. (cv.Jewel,Jul88). |
| 1563540 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Severity of pox is enhanced in soil that is dry, high in pH and not fumigated. Compare mass of feeder roots. (cv.Jewel,Jul88). |
| 1563541 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | The cultivar Beauregard is resistant to pox and does very well, but it is not immune. (Beauregard,Nov89). |
| 1563542 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | The cultivar Beauregard is resistant to pox and does very well, but it is not immune. (Beauregard,Nov89). |
| 1563513 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste. Infection often start where a small root is attached (cv.Jewel, Oct 78). |
| 1563514 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste. Infection often starts where a small root is attached (cv.Jewel, Oct78). |
| 1563515 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Roots harvested from a pox infested field. Notice distorted roots and distribution of pox lesions on the roots. The distribution may be linear as infection often involves the "eyes" on the root (cv.Jewel, Oct79). |
| 1563503 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Midseason sweetpotato (cv.Jewel) growing in pox infested soil. Notice irregular growth, wilting, and yellow leaves. (Aug78). |
| 1563505 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | A sweetpotato (cv.Jewel) field severely affected by pox. The field was not harvested. Often weedy fields indicate a pox problem (Oct78). |
| 1563480 | southern blight | Sclerotium rolfsii | The dry, crusty, circular lesions with sharply defined margins can be popped out. Infection is shallow, 1-5mm. Adjoining tissue is bitter. (Oct78, cv.Jewel) |
| 1563481 | southern blight | Sclerotium rolfsii | The circular lesions are crusty, 1-5mm deep, with sharply defined margin and can be popped out. Infected tissue is bitter. The lesions can be confused with those of Pox. (cv.Jewel, Oct78) |
| 1563509 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Sweetpotato (cv. Centennial) showing pox symptoms on feeder roots, enlarged roots, and underground stems. |
| 1563511 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste (cv.Jewel, Oct78). |
| 1563512 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste. The root on the left is showing pronounced lenticels. (cv.Centennial, Apr74). |
| 1563499 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | A sweetpotato (cv.Jewel) field close to intended harvest severely affected by pox, however the field was not harvested. Often weedy fields indicate a pox problem (Oct78). |
| 1563500 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | A sweetpotato (cv.Jewel) field close to intended harvest severely affected by pox, however the field was not harvested. Often weedy fields indicate a pox problem (Oct78). |
| 1563501 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | A sweetpotato (cv.Jewel) field close to intended harvest severely affected by pox, however the field was not harvested. Often weedy fields indicate a pox problem. Notice poor stand and yellow leaves. (Oct78). |
| 1563490 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Prominent pox lesion on underground stem at junction of feeder roots. Notice steel-gray color on some roots due to the infection and absence of small feeder roots (cv.Jewel, Nov88). |
| 1563493 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | 493 Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste, and often the storage root is poorly shaped (cv.Jewel, Oct78). |
| 1563496 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | #496 A hot spot of pox in a commercial sweetpotato field in a deep sandy soil. (cv.Jewel, Aug78) |
| 1563497 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Wilting of sweetpotato plants in a commercial sweetpotato field because of much rotting of the feeder roots due to infection by the pox bacterium. Often lower leaves turn yellow. (cv.Jewel, Aug78) |
| 1563498 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | A severely pox affected sweetpotato field near intended harvest, however the field was not harvested. Often weedy fields indicate a pox problem (cv.Jewel, Oct78). |
| 1563489 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox lesions are crusty, crater shaped and may penetrate 5mm or more into the fleshy root and have an earthy taste. |
| 1563488 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Pox involves feeder roots and underground stems. Note absence of root hairs, necrotic tissue at end of stem, necrotic areas on roots. (cv.Jewel, Oct75) |
| 1563487 | Streptomyces soil rot (pox) | Streptomyces ipomoeae | Effect of treating soil in infested field with fumigants: check, Vorles, Telone, Vapam, and sodium azide. |
| 1563470 | black rot | Ceratocystis fimbriata | The disease can also involve feeder roots, stems and cause severe losses in the plant bed, field, and in storage. The rot usually does not penetrate deeper than the vascular ring. Tissue near the rot has a bitter taste. Long beacked perithecia with with viscous mass of ascospores at the tip occur on the surface of the rot. (cv. Jewel, Dec82) |
| 1563471 | black rot | Ceratocystis fimbriata | Top root healthy. The disease can also involve feeder roots, stems and cause severe losses in the plant bed, field, and in storage. The rot usually does not penetrate deeper than the vascular ring. Tissue near the rot has a bitter taste. Long beacked perithecia with with viscous mass of ascospores at the tip occur on the surface of the rot. (cv.Centennial) |
| 1563472 | black rot | Ceratocystis fimbriata | The disease can also involve feeder roots, stems and cause severe losses in the plant bed, field, and in storage. The rot usually does not penetrate deeper than the vascular ring. Tissue near the rot has a bitter taste. Long beacked perithecia with with viscous mass of ascospores at the tip occur on the surface of the rot. (cv.PortoRico?) |
| 1563473 | black rot | Ceratocystis fimbriata | The disease can also involve feeder roots, stems and cause severe losses in the plant bed, field, and in storage. The rot usually does not penetrate deeper than the vascular ring. Tissue near the rot has a bitter taste. Long beacked perithecia with with viscous mass of ascospores at the tip occur on the surface of the rot. (cv.PortoRico?) |
| 1563475 | black rot | Ceratocystis fimbriata | The disease can also involve feeder roots, stems and cause severe losses in the plant bed, field, and in storage. The rot usually does not penetrate deeper than the vascular ring. Tissue near the rot has a bitter taste. Long beacked perithecia with with viscous mass of ascospores at the tip occur on the surface of the rot. (cv.Jewel, Dec78) |
| 1563476 | black rot | Ceratocystis fimbriata | The disease can also involve feeder roots, stems and cause severe losses in the plant bed, field, and in storage. The rot usually does not penetrate deeper than the vascular ring. Tissue near the rot has a bitter taste. Long beacked perithecia with with viscous mass of ascospores at the tip occur on the surface of the rot. (cv.Jewel, Dec78) |
| 1563459 | Java black rot | Lasiodiplodia theobromae | The fungal pathogen is often called Diplodia tubericola, occasionally Botryodiplodia theobromae. The rot is firm and moist. Look for locules in the stromatic tissue near the surface. It has been a serious storage rot disease that develops rapidy. |
| 1563460 | Java black rot | Lasiodiplodia theobromae | The fungal pathogen is often called Diplodia tubericola, occasionally Botryodiplodia theobromae. The rot is firm and moist. Look for locules in the stromatic tissue near the surface. It has been a serious storage rot disease that develops rapidy. Domes of stromatic, fungal tissue have broken through the epidermis. (Centennial? Feb1970) |
| 1563461 | Java black rot | Lasiodiplodia theobromae | The rot is firm, moist, and black. Look for locules in the stromatic tissue containing spores. It is a serious storage rot that develops rapidly. The fungus is often called Diplodia tubericola. (Jewel, Nov71) |
| 1563462 | Java black rot | Lasiodiplodia theobromae | Photomicrograph of stromatic tissue showing two locules. (Jewel, Feb78) |
| 1563466 | Java black rot | Lasiodiplodia theobromae | The rot is firm, moist, and black. Look for locules in the stromatic tissue containing spores. It is a serious storage rot that develops rapidly. The fungus is often called Diplodia tubericola. |
| 1563468 | Java black rot | Lasiodiplodia theobromae | The rot is firm, moist, and black. Look for locules in the stromatic tissue containing spores. It is a serious storage rot that develops rapidly. The fungus is often called Diplodia tubericola. (Jewel, Apr 78) |
| 1563469 | Java black rot | Lasiodiplodia theobromae | Healthy and mumified roots. The rot is firm, moist, and black. Look for locules in the stromatic tissue containing spores. It is a serious storage rot that develops rapidly. The fungus is often called Diplodia tubericola. (Jewel, Apr 70) |
| 1563456 | root-knot nematode | Meloidogyne spp. | Sweetpotato roots after removal of epidermis at cannery showing reduced lesions caused by the root-knot nematode. Gravid females are visible in a few spots. ('Centennial' Dec66) |
| 1563457 | root-knot nematode | Meloidogyne spp. | Sweetpotato roots showing lesions and deep set eyes caused by the root-knot nematode. ('Centennial' Nov78) |
| 1563454 | root-knot nematode | Meloidogyne spp. | Sweetpotato roots after removal of epidermis at cannery showing lesions caused by the root-knot nematode. ('Centennial' Dec66) |
| 1563455 | root-knot nematode | Meloidogyne spp. | females in processed sweetpotato Sweetpotato roots after removal of epidermis at cannery showing lesions caused by the root-knot nematode. Gravid females an be seen in the spots. ('Centennial' 1968?) |
| 1563441 | root-knot nematode | Meloidogyne spp. | Slight cracks typical of root knot lesions. (Centennial, Oct1960) |
| 1563442 | root-knot nematode | Meloidogyne spp. | Roots on the left grown in non treated soil, those on the right were grown on soil treated with a fuminant nematicide, dichloroprope dichloropropane? (Jewel Oct1976) |
| 1563443 | root-knot nematode | Meloidogyne spp. | Root-knot lesion on peeled sweetpotatos. Gravid nematodes are usually seen in the lesions as white dots. (Jewel, Oct 1976)) |
| 1563444 | root-knot nematode | Meloidogyne spp. | Root-knot lesions after peeling root in the cannery. Gravid female nematodes can be seen in the lesions as white dots. (Jewel, Oct 1976) |
| 1563445 | root-knot nematode | Meloidogyne spp. | Root-knot lesions and cracking of roots.. (Centennial, Nov 1960) |
| 1563446 | root-knot nematode | Meloidogyne spp. | (Heavily cracked sweetpotato without nematodes. Cracking may be induced by variable soil moisture and nutrient levels. (Centennial, Nov 1960) |
| 1563447 | pesticides | Standak systemic nematicide injury. (Jewel Jun 1983) | |
| 1563448 | pesticides | Standak systemic nematicide injury. (Jewel Jun 1983) | |
| 1563449 | root-knot nematode | Meloidogyne spp. | The newly released cultivar from Louisiana was excellent with resistance to pox but very susceptible to root-knot. Notice pattern in the field at harvest (Beauregard Oct 1991) |
| 1563450 | root-knot nematode | Meloidogyne spp. | Same as previous slide. (Beauregard Oct 1991) |
| 1563451 | root-knot nematode | Meloidogyne spp. | Aerial view of sweetpotato showing field pattern of symptomatic plants. (Beauregard Oct 1991) |
| 1563452 | root-knot nematode | Meloidogyne spp. | Aerial view of symptomatic plant patterns in the field. (Beauregard Oct 1991) |
| 1563453 | root-knot nematode | Meloidogyne spp. | Air crack on upper root and root-knot induced lesions on lower root. (Jewel, Nov 1977) |
| 1563433 | root-knot nematode | Meloidogyne spp. | Gravid root-knot nematodes embedded at root end of edible root. The nematode can be seen in some of the lesions. (Jewel, Nov78) |
| 1563434 | root-knot nematode | Meloidogyne spp. | Root-knot lesions and galls on feeder roots. (Jewel, Oct88) |
| 1563435 | root-knot nematode | Meloidogyne spp. | Gravid root-knot nematodes embedded at root end of edible root. The nematode can be seen in some of the lesions. (Jewel, Jan 73) |
| 1563437 | root-knot nematode | Meloidogyne spp. | Effect of root-knot nematode on growth of sweetpotato plants in a commercial field. (Centennial, <1965) |
| 1563405 | Fusarium damping-off | Fusarium solani | (Sep79, Jewel); Fusarium root rot and stem canker. |
| 1563408 | scurf | Monilochaetes infuscans | Scurf lesions on stems of sprouts pulled off of bedded sweetpotatoes with scurf. (Jan73Jewel) |
| 1563409 | scurf | Monilochaetes infuscans | Historic photo of sweetpotatoes with scurf harvested in baskets. (Porto Rico <1965) |
| 1563411 | scurf | Monilochaetes infuscans | Sweetpotato slip used to plant production field. The plant was pulled from a bedded root. |
| 1563413 | scurf | Monilochaetes infuscans | Notice scurf lesion on stem and preponderance of lesions on the stem-end of roots (Nov77 Jewel) |
| 1563414 | scurf | Monilochaetes infuscans | Notice scurf lesions on the stem and preponderance of lesions on the stem-end of the edible roots |
| 1563419 | scurf | Monilochaetes infuscans | Scurf lesions on stem-end of root. (Jewe Nov85l) |
| 1563422 | scurf | Monilochaetes infuscans | Scurf on roots still attached to stem. Notice that scurf is more prevalent on the stem end of the root than on the root end . |
| 1563425 | scurf | Monilochaetes infuscans | Scurf on roots still attached to stem. Notice that scurf is more prevalent on the stem end of the roots than on the root end. The stem on which the roots developed is heavily infected and is the source of inoculum to infect the edible roots. (Jewel Nov77) |
| 1563427 | scurf | Monilochaetes infuscans | Scurfy sweetpotatoes harvested in baskets. (Porto Rico <1960) |
| 1563428 | scurf | Monilochaetes infuscans | Scurfy sweetpotatoes harvested in baskets. (Porto Rico <1960) |
| 1563431 | root-knot nematode | Meloidogyne spp. | Gravid female with many eggs embedded in edible root. (Jewel Nov78) |
| 1563432 | root-knot nematode | Meloidogyne spp. | Gravid female with many eggs embedded in edible root. (Jewel Nov78) |
| 1563396 | Fusarium damping-off | Fusarium solani | (<1970 ); Fusarium Stem and Root Canker |
| 1563403 | Fusarium damping-off | Fusarium solani | (<1970 ); Fusarium Root and Stem Canker |
| 1563404 | Fusarium damping-off | Fusarium solani | (Sep79 ); Fusarium Root and Stem Canker. |
| 1563358 | Fusarium damping-off | Fusarium solani | Fusarium surface rot; Surface continues to develop in storage. It is usually worse during wet periods and when roots are injured. Cultivar 'Jewel' (Oct83) |
| 1563359 | Fusarium damping-off | Fusarium solani | Fusarium root rot continues to develop in storage. It is usually worse during wet periods at harvest and when roots are injured. Cultivar 'Jewel' (1984) |
| 1563360 | Fusarium damping-off | Fusarium solani | Fusarium root rot continues to develop in storage. It is usually worse during wet periods at harvest and when roots are injured. Notice lens shaped cavities with the fungus sporulating Cultivar 'Jewel' (1984) |
| 1563361 | Fusarium damping-off | Fusarium solani | Fusarium root rot continues to develop in storage. It is usually worse during wet periods at harvest and when roots are injured. Notice lens shaped cavities with the fungus sporulating Cultivar 'Jewel' (Apr83) |
| 1563362 | Fusarium damping-off | Fusarium solani | Fusarium root rot continues to develop in storage. It is usually worse during wet periods at harvest and when roots are injured. Notice lens shaped cavities with the fungus sporulating Cultivar 'Jewel' (Apr83) |
| 1563363 | foot rot | Plenodomus destruens | (Sep73) |
| 1563364 | foot rot | Plenodomus destruens | (Sep73) |
| 1563365 | foot rot | Plenodomus destruens | (Aug73) |
| 1563366 | foot rot | Plenodomus destruens | (Sep78) |
| 1563367 | foot rot | Plenodomus destruens | (Sep78) |
| 1563368 | foot rot | Plenodomus destruens | (Sep76) |
| 1563346 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | Fusarium wilt early symptoms: lower leaf yellowing and leaf abscission. |
| 1563347 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | Fusarium wilt symptoms: Apparently nonsymptomatic, death, reduced growth with yellow leaves and leaf fall. |
| 1563348 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | Fusarium wilt symptoms: stem with external necrosis, vascular browning, and foliar yellowing. |
| 1563349 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | Fusarium wilt symptoms: stems with exterior lesion and vascular browning. |
| 1563350 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | Fusarium wilt symptoms: stem with exterior lesion and vascular browning. Notice necrotic root from stem to storage root. CV Centennial? (<1960) |
| 1563351 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | Fusarium wilt symptoms: Notice necrotic tissue at proximal end of storage and necrosis on sprouts. CV Centennial? (<1960). |
| 1563352 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | A young transplant showing severe Fusarium wilt symptoms: necrotic feeded roots, vascular browning, dead and yellowing leaves. cv. Porto Rico? (<1960). |
| 1563353 | Fusarium wilt (stem rot) | Fusarium oxysporum f.sp. batatas | Storage root showing vascular browning. cv. Porto Rico? (<1960). |
| 1563354 | Fusarium root rot and wilt | Fusarium oxysporum | Fusarium surface rot. cv. Centennial (Apr-64). |
| 1563355 | Fusarium root rot and wilt | Fusarium oxysporum | Fusarium surface rot. cv. Centennial (Apr-64). |
| 1563356 | Fusarium root rot and wilt | Fusarium oxysporum | Fusarium surface rot. cv. GoldRush (Apr-64). |
| 1563357 | Fusarium damping-off | Fusarium solani | Fusarium root rot. Notice lens shappeed cavities or locules in necrotic tissue with abundand mycelium and spores. cv. Jewel (Apr-77). |
| 1563341 | Fusarium damping-off | Fusarium solani | Distal end rot developed after curing during storage. (Apr78) |
| 1563342 | Fusarium damping-off | Fusarium solani | Distal end rot developed after curing during storage. (Apr78) |
| 1563343 | Fusarium damping-off | Fusarium solani | Distal end rot developed after curing during storage. Internal symptoms. (Apr78) |
| 1563344 | Fusarium damping-off | Fusarium solani | Distal end rot developed after curing during storage. (Apr78) |
| 1563345 | Fusarium damping-off | Fusarium solani | Distal end rot developed after curing during storage. (Apr78) |
| 1563327 | bread mold | Rhizopus stolonifer | Photomicrograph (ca. 400x) sporangia and sporangiopores of Rhizopus, the cause of Rhizopus soft rot in sweetpotatoes and other vegetables. |
| 1563328 | bread mold | Rhizopus stolonifer | Photomicrograph (ca. 1000x) sporangia and sporangiopores of Rhizopus, the cause of Rhizopus soft rot in sweetpotatoes and other vegetables. |
| 1563329 | bread mold | Rhizopus stolonifer | Photomicrograph (ca. 1000x) sporangia and sporangiopores of Rhizopus, the cause of Rhizopus soft rot in sweetpotatoes and other vegetables. |
| 1563330 | bread mold | Rhizopus stolonifer | Photomicrograph (ca. 1000x) sporangiospores of Rhizopus, the cause of Rhizopus soft rot in sweetpotatoes and other vegetables. |
| 1563331 | Fusarium damping-off | Fusarium solani | Fusarium root rot caused by Fusarium solani. The reddish mass is the perfect state, Nentria. |
| 1563332 | Fusarium damping-off | Fusarium solani | Fusarium root rot. |
| 1563333 | Fusarium damping-off | Fusarium solani | Fusarium root rot |
| 1563334 | Fusarium damping-off | Fusarium solani | Fusarium root rot |
| 1563335 | Fusarium damping-off | Fusarium solani | Fusarium root rot. |
| 1563336 | Fusarium damping-off | Fusarium solani | Fusarium root rot, internal symptoms. |
| 1563337 | Fusarium damping-off | Fusarium solani | Fusarium root rot internal symptomes. |
| 1563338 | Fusarium damping-off | Fusarium solani | Fusarium root rot. |
| 1563339 | Fusarium damping-off | Fusarium solani | Fusarium root rot. |
| 1563340 | Fusarium damping-off | Fusarium solani | Jewel, distal end rot. |
| 1563312 | bread mold | Rhizopus stolonifer | Rhizopus soft rot showing profusion of aerial mycelia on the surface of a diseased root. |
| 1563314 | bread mold | Rhizopus stolonifer | Roots in storage with Rhizopus soft rot. |
| 1563315 | bread mold | Rhizopus stolonifer | Rhizopus soft rot on roots in storage showing profusion of aerial mycelia and presence of black spore masses. |
| 1563316 | bread mold | Rhizopus stolonifer | Rhizopus soft rot on root in storage showing profusion of aerial mycelia and presence of black spore masses. |
| 1563317 | bread mold | Rhizopus stolonifer | Rhizopus soft rot on root in storage showing profusion of aerial mycelia prior to formation of black spore masses. Upper root is healthy. |
| 1563318 | bread mold | Rhizopus stolonifer | Rhizopus soft rot on root in storage showing aerial mycelia and presence of black spore masses. |
| 1563319 | bread mold | Rhizopus stolonifer | Rhizopus soft rot on root in storage showing profusion of aerial mycelia and presence of black spore masses. Lower root is healthy. |
| 1563320 | bread mold | Rhizopus stolonifer | Root with Rhizopus soft showing interior of the root. The tissue is very soft, often drippy with a pleasant odor. |
| 1563321 | bread mold | Rhizopus stolonifer | Roots out of storage with soft rot and possible water damage in the field. Cultivar Porto Rico?. (Nov77) |
| 1563322 | bread mold | Rhizopus stolonifer | Sweetpotato out of storage with soft rot. Roots may have been damaged in the field by wet conditions. Cultivar may be Porto Rico (Nov77). |
| 1563323 | bread mold | Rhizopus stolonifer | Sweetpotato out of storage with soft rot. Roots may have been damaged in the field by wet conditions. Cultivar may be Porto Rico. Roots incubated in a moist chamber (Nov77). |
| 1563324 | bread mold | Rhizopus stolonifer | Sweetpotato out of storage with soft rot. Cultivar may be Pope. Roots incubated in a moist chamber (Nov77). |
| 1563325 | bread mold | Rhizopus stolonifer | Sweetpotato out of storage with soft rot. Cultivar may be Pope (Nov77). |
| 1563326 | bread mold | Rhizopus stolonifer | Sweetpotato out of storage with soft rot. Roots may have been damaged in the field by wet conditions. Cultivar may be Centennial. (Nov77). |
| 1563281 | sweetpotato | Ipomoea batatas | Barn storage and 20bushel crates in background (Oct77). |
| 1563266 | sweetpotato | Ipomoea batatas | Harvester placing harvested roots in trailer. The adjustable conveyor is designed to minimize injuries to roots caused by long drops. |
| 1563267 | sweetpotato | Ipomoea batatas | Harvester placing harvested roots in trailer. The adjustable conveyor is designed to minimize injuries to roots caused by long drops. Close up of hydraulic adjustment. (Nov75) |
| 1563269 | sweetpotato | Ipomoea batatas | Harvester placing harvested roots in trailer. The adjustable conveyor is designed to minimize injuries to roots caused by long drops. (Nov75) |
| 1563270 | sweetpotato | Ipomoea batatas | Harvesting boxes; 1 bushel equals 60 pounds. Cultivar 'Pope' (Nov69). |
| 1563291 | sweetpotato | Ipomoea batatas | Roots emerging from lye peeler. Notice off type color of roots (Oct75). |
| 1563294 | sweetpotato | Ipomoea batatas | Sheet of sweetpotato pure for flakes (Oct75). |
| 1563295 | sweetpotato | Ipomoea batatas | Cutting belt |
| 1563298 | sweetpotato | Ipomoea batatas | Prize baskets of Porto Rico sweetpotatoes; Yam Festival in Tabor City,NC; 1948. |
| 1563309 | bread mold | Rhizopus stolonifer | Rhizopus soft rot is the most common disease found in stored sweetpotatoes. The rot is soft, wet and often white, whiskery fungal growth covers the tissue. Later black spores develop. |
| 1563310 | bread mold | Rhizopus stolonifer | Rhizopus soft rot is the most common disease found in stored sweetpotatoes. The rot is soft, wet and often white, whiskery fungal growth covers the tissue. Later black spores develop. |
| 1563311 | bread mold | Rhizopus stolonifer | Cv Jewel. Rhizopus soft rot is the most common disease found in stored sweetpotatoes. The rot is soft, wet and often white, whiskery fungal growth covers the tissue. Later black spores develop. (May73) |
| 1563261 | sweetpotato | Ipomoea batatas | In-field harvester/sorter/grader; very mobile (Oct75). |
| 1563262 | sweetpotato | Ipomoea batatas | In-field harvester/sorter/grader diggins roots after the vines were mowed (Oct75). |
| 1563264 | sweetpotato | Ipomoea batatas | Harvester diggins roots and lowering them them into a trailer. (Oct75). |
| 1563265 | sweetpotato | Ipomoea batatas | Harvester designed to dig and lower roots trailer with minimal drop to avoid injuries to the sweetpotatoes. (Oct75). |
| 1563246 | sweetpotato | Ipomoea batatas | Transplanting. Two persons alternate in placing cuttings for planting in one row. County Agent P. Westerbeek third from left. (Jun90). |
| 1563247 | sweetpotato | Ipomoea batatas | Transplanting. Top of the row is sheared off prior to planting the cutting. (Jun90). |
| 1563248 | sweetpotato | Ipomoea batatas | Transplanting. The top of the row is sheared off prior to placing the cutting in the planter. (Jun90). |
| 1563249 | sweetpotato | Ipomoea batatas | Transplanting. Details of planter. (Jun90). |
| 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. |
| 1563180 | potato | Solanum tuberosum | This is a potato (Solanum tuberosu) field showing aircraft application of pesticides to control European Corn Borer and possibly late blight in the Tidewater area in eastern North Carolina. |
| 1563181 | sweetpotato | Ipomoea batatas | Sweetpotato 'Jewel' packout of quality product after storage. July1976 |
| 1563182 | sweetpotato | Ipomoea batatas | Sweetpotato roots after storage ready for shipment. "Jewel." Apr76 |
| 1563183 | sweetpotato | Ipomoea batatas | |
| 1563184 | sweetpotato | Ipomoea batatas | Sweetpotato after storage and waxing ready for shipment. Apr76 |
| 1563185 | sweetpotato | Ipomoea batatas | Sweetpotato 'Jewel' roots after storage and waxing for shipment to markets, Apr76. |
| 1563186 | sweetpotato | Ipomoea batatas | Display of sweetpotato 'Jewel' roots and information on uses and nutritional value May78. |
| 1563187 | sweetpotato | Ipomoea batatas | Sweetpotato 'Jewel' roots after storage for shipment to markets in a Yam Commission carton. For years sweetpotatoes were called Yams. This was a misnomer so the name was changed to North Carolina Sweetpotato Commission, Apr76. |
| 1563188 | sweetpotato | Ipomoea batatas | Sweetpotato 'Jewel' roots after storage and washing for shipment to markets, Apr76. |
| 1563191 | sweetpotato | Ipomoea batatas | Sweetpotato being irrigated. Actually, sweetpotato fields are usually not irrigated. 'Jewel' roots after storage and waxing for shipment to markets, Sep68. |
| 1563192 | sweetpotato | Ipomoea batatas | Five sweetpotato (Ipomoea batatas) roots compared to one yam (Dioscorea spp.) root. Although both are roots, the plants are not even distantly relate; the sweetpotato is a Dicot while the yam is a Monocot. |
| 1563194 | sweetpotato | Ipomoea batatas | Typical sign of sweetpotato grower in eastern North Carolina. |
| 1563195 | sweetpotato | Ipomoea batatas | Sweetpotato roots after curing, washing, grading and packing in cardboard cartons ready for shipment to retail markets. The tern "yam" refers to the moist, orange type sweetpotato. |
| 1563196 | sweetpotato | Ipomoea batatas | Trellised sweetpotato plants used by plant breeder to develop improved cultivars.~1974 . |
| 1563229 | sweetpotato | Ipomoea batatas | |
| 1563232 | sweetpotato | Ipomoea batatas | Planting sweet potatoes with cut plants in late spring. |
| 1563243 | genetic abnormalities | Mutation or chimeras. Sprouts from chimeras and used for planting will produce a crop of roots with that color. A serious problem. | |
| 1563244 | sweetpotato | Ipomoea batatas | planter; ready for planting at fumigation test; Jewel/Beauregard |
| 1563245 | sweetpotato | Ipomoea batatas | Transplanter with cut vines for planting. Two persons alternate planting one row. Jun90. |
| 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. |
| 1563121 | root-knot nematode | Meloidogyne spp. | Root-knot gall on large plant. |
| 1563122 | root-knot nematode | Meloidogyne spp. | Root-knot galls on large plant. |
| 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. |
| 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. |
