The main symptom is the ear. In the early days, brownish-black gangrene appeared on sorghum grains, and black hyphae hyphae and conidia were found when the humidity was high. Affected kernels are easily crushed during harvesting, resulting in decreased yield, reduced quality, and potentially toxic substances. The decline in the activity of the sorghum variety seriously affects the germination rate.
Pathogen Curvularia lunata (Walker) Boedijw. The Curvularia spp. The morphological characteristics of pathogenic bacteria can be found in Corn Curvularia leaf spot.
Transmission routes and disease conditions The pathogens overwinter on sick bodies, soil and seeds. In the following year, conidia are produced and transmitted to the sorghum panicle by wind. Especially after the sorghum flowering, the grain grows into long-term, and if it is continuously rainy, it is easy to develop. Some mature grains are not spared. Conidia are produced on the diseased ear to re-infect and the disease is continuously spread. Spring sorghum is prone to onset in production.
See sorghum top rot for control methods.
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