Prevention and control of corn smut
Corn smut, commonly known as glutinous rice and dumb corn, is the main disease of corn. Comprehensive prevention and control measures centered on disease-resistant varieties should be adopted, including four items of “species, medicines, extractions and managementâ€. China Pesticide Network Xiaobian introduces you in detail:
First, the species (select disease-resistant inbred lines, plant resistant hybrids) resistant varieties of inbred lines: M017, B70, Ji 63, Bai, Wu 107, 7091, Liao 1311, Liao 64-14-1. Hybrid varieties: Zhongdan No.2, Shandan No.9, Danyu No.6, Liaodan No.2, Fengdan No.1 and so on.
Second, the medicine (pharmaceutical seed dressing and soaking) can be used as 12.5% ​​fast-keeping WP, 25% rust-wet WP, 50% thiophanate-methyl WP or 60% carbendazim (Wheyamine) WP Seed dressing according to the weight of the seed 0.3% to 0.5%. Can also be soaked in water for 12 hours, and then with 20% rusting emulsifiable concentrate, 1% of the seed weight of the drug for 12 hours (ie, diluted with 1:20 water with 20% emulsifiable concentrate, then 10% of the seed weight of the pesticide mix well after the heap stuffy).
Third, pull out (extract the diseased seedlings, diseased plants), remove the diseased plants and use a sickle to put them down, so as to pull out early, pull out continuously, pull out thoroughly. The extracted diseased plants and diseased plants should be taken out of the field, concentrated and buried or burned to remove the source of the disease, and must not be thrown at will.
Fourth, the tube (taking agricultural cultivation management measures) to implement the system of cropping in the heavily ill field for more than three years. Corn can be dumped with millet, beans, potatoes, buckwheat or other crops to reduce soil bacteria. Apply net fat. Do not feed livestock with diseased plants. Straw fertilizer should be piled up and fermented to kill the bacteria. Deeply turn the soil, strengthen water and fertilizer management, etc., and enhance the disease resistance of corn.
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