Licorice powdery mildew
It is mainly harmful to leaves, but also to pods. The damaged leaves and pods were covered with a layer of white powder, and many small black spots appeared on the disease spots in the later stage, which could cause early fallen leaves or whole plant wilt.
Prevention and control methods: spray Baume 0.1-0.3 degree stone sulfur mixture, 50% topazine wettable powder 800 times solution, 50% Dysenamine 600 times solution.
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Powdery mildew of licorice and its control
The pathogen is a kind of half-known fungus in fungi, whose scientific name is Erisiphepolygoni, which harms leaves and produces powdery mildew on both sides of diseased leaves. The prevention and treatment methods were sprayed with 0.2-0.3 Baumedu stone-sulfur mixture.
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Organic Fertilizer must be applied for sustained High yield of Cotton
Although cotton is a barren-tolerant crop, in order to achieve high and stable yield, cotton field must have higher fertility. According to the Cotton Research Institute of the Chinese Academy of Agricultural Sciences, at present, most cotton fields in China are lack of fertility, and the contents of various nutrients are rich and deficient, which are very unbalanced, especially in the cotton area of the Yellow River basin, the content of organic matter is low, the supply of nitrogen is insufficient, and the content of available potassium is decreasing rapidly. trace elements zinc and boron are also in the range of deficiency or potential deficiency. These have become important factors restricting the sustained and steady increase of cotton production. Cotton is a deep-rooted crop and grows.
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