The symptom knowledge and pesticide control methods of spot disease on kidney beans are as follows: LED Elephant Lights,Simulation Elephant Lights,Outdoor Elephant Lights,LED Baby Elephant Modeling Light Sichuan Kangruntengpu Photoelectric Technology Co., Ltd. , https://www.tengpulighting.com
(1) Symptoms. The main damage to the leaves, the leaf spot is round or nearly round, the leaf edge is semi-circular, the lesion is larger, the edge is brown, the middle color is slightly shallow, and the spot has a wheel pattern.
(2) pathogens and disease conditions. The pathogen is a fungus that overwinters with the diseased body in the soil and is spread by rainwater.
(3) Control methods. 70% methyl thiophanate is 600 times, and 77% can kill 600 times.