What about the rotten cotton bolls?
What about the rotten cotton bolls? Is there any way to prevent and cure cotton in mid-late August, when cotton enters the boll opening period, the phenomenon of rotten bolls and peaches often occurs? in general, the rate of rotten bolls and peaches reaches 10%, 15%, and serious fields reach more than 30%, often resulting in reduced cotton production and quality. For this reason, there are the following five measures to control cotton rotten boll and rotten peach: to prevent and control cotton bollworm and red bollworm, one is to plant hybrid insect-resistant cotton varieties, and the other is to pay timely attention to pest information and control during the occurrence of cotton and red bollworm. reduce the loss of insect pests to a minimum. Dehumidification and anti-rot: the four ditches in the cotton field are not smooth, and the humidity in the field is high, which leads to more rotten bolls. Therefore, it is necessary to clean up the four ditches in time to make the ditches communicate with each other and eliminate water condensation. Ventilation, light and anti-rot: first of all, we should strictly control the amount of nitrogen fertilizer, too much nitrogen fertilizer, easy to cause cotton plant crazy growth, too little, but also can not effectively promote cotton plant growth and improve ventilation and light transmission conditions. Secondly, we should do a good job of chemical regulation and control, which is conducive to ventilation and light transmission. In addition, timely and appropriate beating of empty branches and old leaves can directly improve the ventilation and light transmission conditions in the middle and lower parts of cotton plants, and reduce the rotten bolls and rotten peaches in the middle and lower parts. Treatment and anti-rot: in the flower and boll stage, spraying with 600 times carbendazim liquid can effectively control bell diseases, directly kill germs and reduce mildew and rot. Grab and prevent rot: for those who have occurred or are about to have rotten bolls and rotten peaches, they should be picked in time in order to take the cotton bolls of germs out of the field and reduce the pathogen. At the same time, peeling, drying and harvesting the rotten bolls in time can reduce the yield loss of rotten bolls and collect more internal flowers. Click to get massive cotton planting technology click to get massive grain and oil crop planting technology
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How to control diseases and insect pests when planting cotton?
How to control diseases and insect pests when planting cotton? When should I start? Strict disinfection of seeds strongly advocates the purchase and selection of foam acid depilation, selection, use of high-efficiency fungicides and insecticide coating, good quality coated seeds; all cotton fields that do not use coated seeds, the cotton seeds used must also use efficient sterilization.
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How to prevent and cure soybean root rot?
How to prevent and cure soybean root rot? What is the best method to control soybean root rot by the following methods: 1. Select disease-resistant varieties. 2. Rotation with corn, millet, sweet potato and other non-host crops. 3. Increase the application of farm manure, potash fertilizer, phosphate fertilizer and so on when sowing. 4. Apply metalaxyl granules when sowing.
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