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Targeted measures should be taken for cotton management in the middle and late stages
This year, cotton was affected by unfavorable weather such as low temperatures, cloudy and rainy days, and insufficient sunlight in the early stage, resulting in weak growth and delayed development of plants over large areas. In addition, severe natural disaster weather such as heavy rain and typhoons has occurred frequently recently, making the cotton production situation very serious. Cotton is currently in a critical growth period, and all localities should adopt targeted technical measures, strengthen cotton field management, promote the transformation of seedling conditions, and strive to achieve a bumper cotton harvest. 1. Fertilizer management. Focus on the application of topdressing fertilizer and the mixed spraying of pesticides and fertilizers in the later stage. Generally, apply 5-7.5 kg of urea per mu to increase bolls and boll weight and prevent premature senescence. For cotton fields with late boll setting, few bolls in the middle and lower parts, or sufficient flower and boll fertilizer with late application timing, where cotton plants are still growing vigorously at the Beginning of Autumn, fertilizer should mainly be applied by spraying, with supplementary application in fertilizer-deficient areas. For cotton fields deficient in potassium and boron, promptly spray potassium fertilizer and boron fertilizer in combination with pest and disease control.
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Poor cotton growth, management must keep up in the middle and late stages this year
Since the beginning of this year, our province has experienced prolonged overcast and rainy weather with scant sunshine, severe occurrence of seedling diseases, and cotton growth generally poorer than in previous years. At present, cotton has entered a critical period of growth, so we must make full use of the current characteristics of higher temperatures and rapid cotton growth to do a good job in cotton field management. Management in the middle and late stages of cotton should focus on the following aspects: 1. Early stubble clearing, early management. Stubble clearing and intertillage can not only provide a good environment for cotton seedling growth and development, but also eliminate cotton bollworm pupae. Once cotton seedlings enter the field, the word "management" must be put first, and all localities should suit measures to the seedlings and carry out classified management. Category 1 cotton seedlings grow
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Why do young bolls on the middle and upper parts of the cotton plant crack open prematurely?
Recently, some farmers called to report a strange phenomenon in cotton production: the large bolls and early-developing bolls on the lower part of the plant were growing normally and had not yet opened, while the tender bolls on the middle and upper parts cracked open prematurely, and some of the cracked bolls then rotted. The Wuqiao County Agriculture Bureau immediately organized technical personnel to go into the fields to find the cause. 1. Field symptoms: In early-sown cotton fields where the top 1-3 fruiting branches had no buds or bolls, or very few buds and bolls, due to rain or pest and disease damage, the number of cracked bolls on the middle and upper parts was relatively high, that is, the outer bolls on the 7th-8th fruiting branches counting from the bottom and the inner bolls on the 9th-10th
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