由Exserohilum turcicum引起的高粱大斑病是一种世界性的病害。降低产量(高达45％)、种子品质及饲料的质与量。有关这种病害在南部非洲的分布及重要性的资料,还很不完全。该病菌可以菌丝体、分生孢子或厚垣孢子在土或土表的作物病残体上存活。带菌的植物残体看来是比分生孢子更为重要的侵染源。分生孢子可借风力远距离传播,并导致在田间的再传播。高粱生长季节的气候,似乎影响大斑病的 Sorghum spot blight caused by Exserohilum turcicum is a worldwide disease. Reduce production (up to 45%), seed quality and feed quality and quantity. Information on the distribution and importance of the disease in southern Africa is still incomplete. The bacteria can mycelium, conidia or chlamydospores in soil or soil surface of the disease survived on the crop. Carcinogenic plant debris appears to be a more important source of infection than conidia. Conidia can be transmitted by wind over long distances and cause retransmission in the field. The climate of the sorghum growing season appears to affect the maculopathy