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Timely prevention and control of lotus root rot: detect early, prevent and control early
Q: The lotus roots I grow at home were growing very well at first, but now the leaves have begun to dry up. I have used several kinds of pesticides but none of them worked. What exactly is going on? What pesticide can cure it? At present, the main leaf disease of lotus root is lotus root rot, the number one disease in lotus root production, mainly damaging the underground stems and...
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Beware of viral disease in rapeseed seedlings: detect and treat early
The characteristics of viral disease occurrence in rapeseed seedlings in seedbeds are as follows: 1. In seedbeds where farmyard manure such as pig manure, cow manure and chicken manure was applied during land preparation, the rapeseed seedlings do not develop the disease. 2. In seedbeds where no farmyard manure was applied and only ammonium bicarbonate was applied, the rapeseed seedlings develop the disease severely. 3. For the same variety and the same fertilizer rate, rapeseed seedlings in seedbeds with high fertility do not develop the disease, while rapeseed seedlings in seedbeds with low fertility do develop the disease.
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