The main diseases occurring on corn currently include corn leaf spot, small class disease, and sheath blight. These three diseases mainly damage the leaves, and sometimes they can damage the leaf sheath, the leaves and the ears. In severe cases, the disease spots are merged, the leaves die, and the yield is generally reduced. 15-20%, the serious ones are more than 50%, and even the harvest. Since entering mid-July, the county has continued heavy rains and continued high temperatures, which is conducive to the development of corn diseases. According to the county plant protection station recently in the carriage return, Xiping, Chongyang, Erlangping and Other townships survey: ward disease rate of 30%, the average disease rate of 12%, diseased leaf rate of 8%; the highest disease rate of 100%, diseased leaf rate 52%. In the survey, it was found that the late-season summer corn field was heavier, especially the planting of poorly-resistant varieties, partial application of N fertilizer, excessive close planting, and management of extensively-produced fields. It is hoped that the majority of farmers will attach great importance to it and immediately carry out prevention and control
Control method:
1. Strengthen agricultural control, clean pastoral, cultivating and weeding, controlling the source of bacteria; removing the old leaves and diseased leaves, reducing the source of re-infested bacteria; reducing the humidity in the field; increasing the application of phosphorus and potassium fertilizer, strengthening field management, and enhancing the disease resistance of plants.
2, use 50% carbendazim or 50% antibacterial WP 500-800 times liquid, or 15% Heguoli 600 times liquid spray evenly, spray every 7-10 days, even when spraying Spraying 2-3 times can effectively control three diseases.
Control method:
1. Strengthen agricultural control, clean pastoral, cultivating and weeding, controlling the source of bacteria; removing the old leaves and diseased leaves, reducing the source of re-infested bacteria; reducing the humidity in the field; increasing the application of phosphorus and potassium fertilizer, strengthening field management, and enhancing the disease resistance of plants.
2, use 50% carbendazim or 50% antibacterial WP 500-800 times liquid, or 15% Heguoli 600 times liquid spray evenly, spray every 7-10 days, even when spraying Spraying 2-3 times can effectively control three diseases.
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