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Helminthosporium leaf disease, ear and stalk rot Setosphaeria rostrata = Helminthosporium rostratum: 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
The most effective way to control corn stunt is early planting. Although corn stunt can impact corn planted in early months like April or March, the greatest damage affects corn planted after July. [2] Chemicals like insecticides can be used to control D. maidis, [14] [15] [16] however, the use of this method to control Corn Stunt is not very ...
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.
Northern corn leaf blight (NCLB) or Turcicum leaf blight (TLB) is a foliar disease of corn caused by Exserohilum turcicum, the anamorph of the ascomycete Setosphaeria turcica. With its characteristic cigar-shaped lesions, this disease can cause significant yield loss in susceptible corn hybrids.
Stewart's wilt is a bacterial disease of corn caused by the bacterium Pantoea stewartii. The disease is also known as bacterial wilt or bacterial leaf blight and has been shown to be quite problematic in sweet corn. [1] [2] The causal organism is a facultatively anaerobic, gram-negative, rod-shaped bacterium. [3]
Southern corn leaf blight (SCLB) is a fungal disease of maize caused by the plant pathogen Bipolaris maydis (also known as Cochliobolus heterostrophus in its teleomorph state). The fungus is an Ascomycete and can use conidia or ascospores to infect. [ 1 ]
Corn smut is a plant disease caused by the pathogenic fungus Mycosarcoma maydis, synonym Ustilago maydis. One of several cereal crop pathogens called smut , the fungus forms galls on all above-ground parts of corn species such as maize and teosinte .
Symptoms can vary depending on which part of the growing season the corn is in. [4] Early in the growing season, the main symptom is foliar leaf blight. This often appears as 1 inch (25 mm) long and 1 ⁄ 2 inch (13 mm) wide oval or spindle-shaped water-soaked lesions on the lower leaves of the plant.