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Alternaria leaf spot and stem blight Alternaria spp. Alternaria storage rot Alternaria spp. Black rot Ceratocystis fimbriata Chalara sp. [anamorph] Blue mold rot Penicillium spp. Cercospora leaf spot Cercospora spp. Phaeoisariopsis bataticola = Cercospora bataticola, C. batatas, C. ipomoeae. Charcoal rot Macrophomina phaseolina: Chlorotic leaf ...
One example is the Ipomoea form of the fungus, which is specific to sweet potato (Ipomea batatas) and wild morning glory. Symptoms can be found on the fleshy root or visible in plants. [3] On sweet potato, Ceratocystis fimbriata causes a disease called 'black rot,' which displays firm and dry circular brown/black rots. Infected plants often ...
A sign of black dot disease is black microsclerotia that are produced by the pathogen, and can be found on the roots, the tuber, the stems, and the leaves. [3] This can be used to diagnose black dot. Symptoms of black dot disease include silvery lesions on the surface of the tuber, brown or black lesions on the leaves, leaf wilting, and ...
People can observe P. infestans produce dark green, then brown then black spots on the surface of potato leaves and stems, often near the tips or edges, where water or dew collects. [9] The sporangia and sporangiophores appear white on the lower surface of the foliage. As for tuber blight, the white mycelium often shows on the tubers' surface. [10]
How to store: Both potatoes and sweet potatoes should be kept in a cool, dark place (55°F or so is ideal, but room temp is better than refrigerated) with plenty of airflow.
Fusarium dry rot of potato is a devastating post-harvest losses (vegetables) disease affecting both seed potatoes and potatoes for human consumption. [3] Dry rot causes the skin of the tuber to wrinkle. The rotted areas of the potato may be brown, grey, or black and the rot creates depressions in the surface of the tuber.
What Causes Good Greens To Go Bad. Unlike what the post suggests, leafy greens aren’t a major source of ethylene.But they are sensitive to produce that emits the gas. That’s why you should ...
Phoma leaf spot: Ph. andigena var. andina. Powdery mildew: Erysiphe cichoracearum. Rhizoctonia canker and black scurf: Rhizoctonia solani. Rosellinia black rot: Rosellinia sp. [which?] Dematophora sp. [anamorph] Septoria leaf spot: S. lycopersici var. malagutii. Silver scurf: Helminthosporium solani. Skin spot: Polyscytalum pustulans. Stem rot ...