The lotus root spoilage disease is also called blight, which is mainly harmful to the underground stems, and the aboveground leaves can also be affected. When the disease is serious, the whole field is burnt.
Control method:
Agricultural control. Reasonable rotation is the most effective method to prevent and treat this disease. The rotation cycle is generally 2 to 3 years. Pay attention to the selection of healthy plants from the disease-free fields to prevent the spread of bacteria. Rational fertilization, not biased with nitrogen fertilizer, enhance plant disease resistance.
Chemical control. Before planting, spray with 70% methyl thiophanate 1000 times solution or 75% chlorothalonil 800 times solution, cover the agricultural film for 24 hours, dry and plant. In the early stage of the disease, use 75% chlorothalonil 0.5 kg, add 30 kg of soil and mix well, then sprinkle it into shallow paddy field, or use 50% carbendazim WP 600-800 times solution, 50% thiophanate WP 800~ 1000 times liquid, spray once every 7 to 10 days, even spray 2 to 3 times, have a certain effect.
This article URL: Lotus root disease (wilt disease) symptoms and prevention methods
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