The blind Toona sinensis harms new cotton leaves with holes and black spots.
139***8164 mobile phone sent a text message: cotton new leaves have a lot of small holes, there are a lot of small black spots, what is going on? What kind of medicine?
A: Most likely caused by bug stings. The bug stings the top of cotton, causing tissue necrosis and forming needle spots. Later, with the growth of healthy tissue, irregular holes are formed in the leaves (the edge tissue heals well, which is different from the holes caused by diseases).
Blind stink bug is a common and frequent pest in cotton production in recent years. It is harmful to cotton production. It should be prevented early according to the information of pests and diseases. When the new stem and leaf appear holes, the top of stem dies and a large number of buds fall off, the effect of keeping yield is poor. The effective medicines for controlling bug bugs include butenyl-fipronil, acetamiprid, nitenpyram, abamectin, malathion and cypermethrin.
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When the Meiyu season comes, cotton should be prevented and treated as soon as possible.
At present, the cotton seedling situation has entered the budding stage, but also entered the annual plum rain season. According to meteorological data, from May 30 to 31, some major cotton-producing counties, cities and districts in Wuhan, Xiaogan, Suizhou, and Ezhou received more than 100 mm of rainfall, causing torrential rain in some cotton fields, and cotton seedlings in depressed areas of some cotton fields were flooded. While cotton seedlings suffer from waterlogging, diseases and grass damage follow one after another. The "three evils" of cotton hit cotton farmers at the same time. According to the survey, there are now some cotton fields per
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Transplanting technique of Cotton with plastic Film mulching in Wheat and Oil stubble
The transplanting period of cotton in wheat and rape stubble is late, and the growth period is late. Plastic film mulching can increase temperature and preserve soil moisture, prevent waterlogging and drainage, and it is an effective measure to fight for early development, prevent rigid seedlings and win high yield. After harvesting, the wheat and rape were ploughed, furrowed and ridged, and the ridge surface was covered with plastic film after spraying soil sealing agent. Combined with the application of rotten organic fertilizer 2000kg / mu, compound fertilizer 40kg / mu and boron holding capacity 1kg / mu. The transplanting period of rape stubble can't be fixed in time.
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