roots, stems and leaves and multiply. The plant may react by producing gum and tylose, a glue-like substance, in the vessels. The bacteria, gum and…
Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the leaves.…
blight. Life cycle and appearance of Gummy stem blight Mycosphaerella cucumis survives in crop debris and produces the sexual ascospores and asexual…
stripes are formed at the base of the leaf and the leaf sheath. They gradually extend and become brown and chlorotic and may merge. Eventually this…
Life cycle and appearance of Cottony soft rot Cottony soft root ( Sclerotinia sclerotiorum ) overwinters as sclerotia and mycelium in dead and living…
year after infection. Life cycle and appearance of Bacterial canker of tomato Clavibacter is seed-borne and tuber-borne and primary infection is…
watermelon and squash. Life cycle and appearance of Downy mildew Pathogens causing downy mildew are not fungi but Oomycetes and related to Pythium and…
petioles and fruits and sometimes on twigs and bud scales. The lesions are olive-green. When spores are produced, the lesions become grey and fluffy.…
but viability and germination rate should be checked and compensated for Use resistant cultivars Perform field checks for infected seed and prevent…
in plant parts like bulbs and crop residues or as sclerotia (drought- and cold-resistant structures) in the soil. Life cycle and appearance of Grey…
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