The increase of high-temperature weather in August, the spring sowing peanuts in the vegetative and reproductive growth stage, but also a variety of diseases prone to frequent periods, peanuts are often due to disease effects caused by less scarring and concentration, peanut seeds small, not full, empty Many things affect the output and quality. Zhou Yanzhong, a researcher at the Peanut Research Laboratory of Luohe Academy of Agricultural Sciences in Henan Province, suggested that farmers should look for the characteristics of the disease, treat the disease and prevent it in time.
Stalk rot pathogens are transmitted by rainwater and irrigation water, resulting in rot of diseased plants or incomplete kernels. "To do well drainage in the field, do not use mixed soil and fertilizer, increase the application of phosphorus and potassium fertilizer. In the early stage of disease, use carbendazim WP or zein zinc WP spray, spray 7 days interval 1 time, even spray 2 or 3 times." Zhou Yanzhong said.
Root rot Zhou Yanzhong said that the susceptible plants are short and the leaves turn yellow and dry off from bottom to top. The disease depends mainly on rain and field transmission. Prevention can be achieved by increasing the use of organic fertilizer, flood control and drainage, and strengthening field management. The early stage of the disease was sprayed with carbendazim solution.
Rust mainly damages the leaves, and it will seriously affect the petioles, stems, pedicel and husks. Zhou Yanzhong introduced that rusting flowers are easy to infect. When the relative humidity is high and the sunshine is low, the incidence is often severe. In terms of prevention and treatment, we can use disease-resistant varieties to strengthen field management, increase organic fertilizer, phosphorus and potash fertilizers, do a good job of drought prevention and drainage, cultivate strong seedlings, and increase plant disease resistance.
This disease is a kind of soil fax fungus disease. The disease shows symptoms only after the peanut meal expands to maturity, and the control effect is poor after the onset of the disease. Therefore, Zhou Yanzhong suggested that disease-resistant varieties should be selected, and rotations should be carried out in a rational manner. Deep-turning and soil improvement should be implemented to strengthen field management, and water should be discharged from the ground in time after rain. Peanut cicada early spraying triadimefon emulsifiable concentrate or sulfoxide solution, the onset of the disease can also be used triadimefon, root rot spirit, thiophanate-methyl and other agents irrigated root, the control effect is very obvious.
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