What are the key technical points for late-stage cotton management?
How should cotton be managed in the late stage? Please provide an introduction to the methods. For managing cotton in the late stage of cultivation, you can refer to the following methods: 1. Strengthen field management. First, for cotton fields with lush foliage and shading, the old leaves and empty branches on the lower part of the main stem can be removed. Second, promptly remove superfluous buds. Third, remove the cluster tips, generally removing the cluster tips of the lower, middle, and upper fruiting branches in stages...
How should cotton be managed in the late stage? Please provide an introduction to the methods.
For managing cotton in the late stage of cultivation, you can refer to the following methods:
I. Strengthen field management. First, for cotton fields with lush foliage and shading, the old leaves and empty branches on the lower part of the main stem can be removed. Second, promptly remove superfluous buds. Third, remove the cluster tips, generally removing the cluster tips of the lower, middle, and upper fruiting branches in stages.
II. Prevent premature aging. Late-stage management should focus on preventing premature aging, mainly by foliar spraying of fertilizer to meet cotton's (18645, 75.00, 0.40%) nutrient needs. Spray a mixed solution of multi-element fertilizer consisting of 1.2% urea + 0.3% potassium dihydrogen phosphate + 0.2% zinc sulfate + 0.1%-0.2% boric acid. Spray once every 7-10 days.
III. Artificial chemical ripening. At the end of September and the beginning of October, choose a sunny day and use 150-200 milliliters of 40% ethephon per mu, diluted with 50 kilograms of water for spraying to promote early ripening.
IV. Timely harvesting. It is best to pick about 7 days after the bolls crack and the lint is exposed. Bolls that have not fully cracked and matured are not harvested, and cotton lint with dew on it is not harvested.
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