Prevention and control of peanut sheath blight
Peanut sheath blight usually begins to occur in large quantities in mid-June. The comprehensive control measures are as follows:
For the lower fields, it is necessary to open a ditch to facilitate the removal of water and lower the water level; the peanuts on the slopes should also open a ditch so that no water will accumulate after the rain.
Increase the application of calcium and potassium fertilizer. After the initial flowering period, combined with soil cultivation, 40 to 50 kg of lime, or 15 to 25 kg of lime and grass ash, can enhance the disease resistance of the plant.
Do early check and cure. In the flowering period, timely inspection, when the disease rate is about 20%, should be sprayed immediately. It can be sprayed with Jingjingmycin 800 times solution or 75% chlorothalonil 500-600 times solution . The spray should be even, and the upper and lower blades and the front and back of the blade should be sprayed. In case of heavy rain after spraying, re-spray. Each time, the spray liquid per acre is about 75 kg, and it is sprayed once again 8 to 10 days after the first spraying. Do not spray under the hot sun at noon.
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