Other Fasteners,Automotive Wheel Nuts,Automobile Flange Wheel Nuts,Stainless Steel Screws Hebei Yuanyue Trading Co.,Ltd , https://www.hbyuanyue.com
Cotton field rotten bell should be early defense
August and September are critical periods for cotton boll development, maturation, and opening. This phase is essential for overall cotton production. However, during this time, the weather tends to be rainy and humid, creating favorable conditions for the growth and spread of various bacterial pathogens. The more bolls present in the field, the worse the microclimate becomes, increasing the risk of boll rot and significant yield loss. Therefore, it's crucial to implement preventive measures before the onset of boll rot. Here are three key strategies to consider:
Under similar weather conditions, cotton fields with high plant density, low-lying areas, or those with vigorous growth are more susceptible to infection. To protect these areas, it’s recommended to start applying chemical treatments at the end of July. You can use a 600-fold dilution of 65% Daisen zinc water, or spray 400-fold solutions of wettable powders like 50% methyl thiophanate or 50% mancozeb. Focus on spraying the bolls located on the fruit branches below the middle part of the plant. Apply the treatment every 7 to 10 days, and in severe cases, you may need to spray 2 to 3 times.
To reduce humidity in the field, it's important to manage water effectively. Drainage ditches should be maintained, and mechanical pumping can be used to remove excess water as quickly as possible. Farmers with the resources can dig through ditches to prevent waterlogging and improve soil aeration.
Improving light penetration in the field is also vital. The lower parts of the cotton plant often have poor light exposure, which creates a dark and moist environment ideal for bacterial growth. Regularly removing empty branches, axillary buds, "hair ears," and yellow leaves can enhance air circulation and reduce surface moisture, helping to prevent boll rot.
By implementing these practices, farmers can significantly reduce the risk of boll rot and ensure healthier cotton crops during the critical growing season.