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Rust, common corn Puccinia sorghi: Rust, southern corn Puccinia polysora: Rust, tropical corn Physopella pallescens. Physopella zeae = Angiopsora zeae. Sclerotium ear rot Southern blight Athelia rolfsii: Seed rot-seedling blight Athelia rolfsii. Bipolaris sorokiniana Bipolaris zeicola = Helminthosporium carbonum Diplodia maydis Exserohilum ...
In certain corn varieties, kernels can be infected later in the growing season after flowering occurs. Although corn kernels can be a source of inoculuum, seed transmission is quite rare. [9] Commercial seed lots obtain phytosanitary certification for Stewart's Wilt by field inspection. The presence of the bacteria in the field at any level ...
If infection of the shank occurs early enough the ear may be killed prematurely which causes the ear to drop. SCLB affected kernels will be covered in a felty, black mold, which may cause cob rot. [1] Ear rot is more extensive with Race T on T-cms corn. [8] Seedlings that become infected may wilt and die within a view weeks of the planting date ...
[2] [16] In sweet corn, reflective mulches can be an effective way to control D. maidis and the disease it vectors, compared to insecticides. [17] Mulching should be performed early in the plant's development to properly control this disease, as greater damage happens if the plant host is younger when infected with corn stunt disease.
The presence of Fusarium fungi on crop debris or seed can cause Fusarium seedling blight and foot and root rot. [1] Later, infection of the heads can occur with spores spreading by rain splash from infected crop residues. Another major infection route is airborne inoculum as spores can travel long distances with the wind. [4]
MDMV is the most serious virus of sweet corn. [3] If corn plants are infected with MDMV, ear formation and development are slowed leading to grain yield loss. [4] The damage from MDMV can cause the halting of ear formation and development, ultimately leading to the production of barren ears and direct yield loss. [5]
In 2013 an Iowa man wearing a battery-powered mask that filtered out dust, a result of his asthma, was engulfed two feet (61 cm) below the surface of 22,000 US bushels (780 m 3) of corn in an 80,000-US-bushel (2,800 m 3) bin. The respirator mask enabled him to survive, drifting in and out of consciousness for five hours until he was rescued by ...
Corn grey leaf spot can be an extremely devastating disease as potential yield losses range from 5 to 40 US bushels per acre (440 to 3,480 L/ha). At higher disease levels, even greater losses can result. When a corn plant's ability to store and produce carbohydrates (glucose) in the grain is diminished, yield losses take place.