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What are the control methods for cotton boll rot (boll)?
How to control cotton boll rot (boll)? Please introduce the methods. Cotton boll rot mostly occurs from mid to late August to early September. During this period, if there is cloudy and rainy weather with high humidity, and the cotton field is dense with poor ventilation and light penetration, various pathogens will rapidly breed and multiply. Common cotton boll rot diseases mainly include anthracnose, black boll disease, blight, red rot, pink rot...
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Effective methods to prevent premature aging in the late growth stage of cotton
How to prevent premature aging in the late stage of cotton? Here are the methods. The internal cause of premature aging in the late stage of cotton is that after cotton growth enters August, the demand for nutrients among roots, stems, leaves, and bolls comes into fierce competition, leading to an imbalance between nutrient supply and demand; the external cause is insufficient water and fertilizer in the cotton field in the late stage, such as phosphorus deficiency or...
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Correct methods and key technical points for fertilizing cotton in the late stage
How should cotton be fertilized in the late stage? Please explain the methods. Around mid to late September is the late growth stage of cotton. During this period, the cotton root system's ability to absorb nutrients declines noticeably, but if nitrogen, phosphorus, potassium, zinc, boron and other fertilizers are sprayed on the cotton leaves, it can prevent premature senescence, promote early maturity, prevent disease, prevent boll shedding, and produce large bolls...
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Control methods for cotton boll rot (bolls) during the rainy season
How to prevent cotton boll rot (bolls) during the rainy season? Please provide an introduction. During the rainy season, the following methods can be used to prevent cotton boll rot (bolls): 1. Scientific fertilization: Most of the cotton currently cultivated is insect-resistant cotton, which generally requires large amounts of base fertilizer and bud fertilizer, and no flower and boll fertilizer, to prevent excessive growth and increased shading. Nitrogen should be controlled, phosphorus increased, and...
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Causes and Control Methods of Acute Wilting of Cotton After Rain
What causes acute wilting of cotton after rain and why should it be prevented? Please give an introduction to the causes of acute wilting in cotton: First, insufficient soil oxygen. After cotton fields are waterlogged, the roots receive insufficient oxygen, causing root suffocation and affecting the normal absorption function of the root system. The longer the suffocation lasts, the more severe the root damage. Second, improper fertilization. A one-time topdressing...
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What are the methods to control excessive growth of cotton in summer?
How do you control excessive growth of cotton in summer? Here are some methods to introduce. To control excessive growth of cotton in summer, you can refer to the following methods: timely chemical regulation by spraying mepiquat chloride or chlormequat, which can control cotton plant growth, improve plant shape, and produce more buds and bolls. At the initial flowering stage, use 6-8 ml of chlormequat or 1.5-2 g of mepiquat chloride per mu, add water to 25...
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What are the control methods for cotton mirid bugs?
How do you control mirid bugs when growing cotton? Please explain the methods. Cotton mirid bugs can cause damage during both the seedling stage and the bud and boll stage of cotton. Right now, during the vigorous reproductive growth period of squaring, flowering and boll setting, is also the main damage period of mirid bugs, and they can cause cotton squares and bolls to drop. However, current genetically modified insect-resistant cotton has no resistance to piercing-sucking pests such as mirid bugs...
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How to Grow Lettuce in Winter? Detailed Methods and Key Technical Points
How do you grow lettuce for the winter market? Is there anyone who can guide me on winter lettuce cultivation? You can refer to the following growing methods for cultivation (for reference). 1. Lettuce variety selection: Choose cold-tolerant, bolting-resistant varieties, such as Italian year-round bolting-resistant lettuce, Hong Kong glass crisp lettuce, etc....
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Detailed Explanation of Planting Methods and Cultivation Techniques for Increasing Cucumber Yield
What methods can increase cucumber yields? I hope friends can share methods. To achieve higher yields when growing cucumbers, you can refer to the following 5 methods. Method 1: Foliar feeding: Spraying a 0.3% urea water solution during the seedling stage can promote early seedling growth. You can also spray a 0.5% ferrous sulfate solution to promote healthy seedlings...
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How to fertilize sorghum properly for planting? Detailed methods and techniques
How to fertilize sorghum properly for planting? Please allow me to explain. Sorghum has wide adaptability to soil and strong nutrient uptake capacity. When planted on sandy loam rich in organic matter and with relatively high fertility, it is relatively easy to obtain high yields. On lean and barren dry land lacking phosphorus and low in potassium, fertilizer must be added to obtain a good harvest. During the seedling stage, sorghum plants are small and do not need much fertilizer...
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