How to prevent and control excessive growth of cotton in July and August?
How to prevent and control excessive growth of cotton in July and August? Please introduce the control methods. July and August are the critical period for cotton squaring, flowering and boll setting, and also the period when cotton growth is at its best. If management is poor, it will inevitably cause excessive vegetative growth of cotton, shedding of squares and bolls, and reduced yield. Irrigation and topdressing: July is the peak period of cotton water and fertilizer demand...
How to prevent and control excessive growth of cotton in July and August? Please introduce the control methods
July and August are the critical period for cotton squaring, flowering and boll setting, and also the period when cotton growth is at its best. If management is poor, it will inevitably cause excessive vegetative growth of cotton, shedding of squares and bolls, and reduced yield.
Irrigation and topdressing: July is the peak period of cotton water and fertilizer demand. Irrigate sufficiently and thoroughly, and together with irrigation apply 15 kg of urea per mu. After August 10, except for a few sand-leakage fields, irrigation of cotton fields is prohibited.
Pruning: Cotton is a crop that likes warmth and light. At this time, the oily shoots and superfluous buds below the first fruiting branch of the cotton plant should be stripped off by hand to reduce nutrient consumption, reduce shading in the cotton field, and improve ventilation and light conditions, so as to avoid delayed maturity and excessive greenness of cotton.
Chemical control: Chemical control is the top priority in cotton field management. Together with irrigation, use 120 ml of Tianxinkangpu No. 1 per mu, diluted with 30 kg of water for foliar spraying.
Topping: When the cotton plant grows to 7-8 fruiting branches, remove the top of the plant with one leaf and one bud, and together with topping, carry out one foliar topdressing at the same time to improve leaf photosynthesis and prevent premature aging.
Pest control: If cotton bollworm or red spider mite occurs, use 40 ml of Chongdi No. 2 or 20 ml of hydrogen chlorinated polyester per mu, diluted with 30 kg of water for foliar spraying. The key is to spray the young leaves or young buds of fruiting branches, spraying once every 7 days for 2-3 consecutive times, to promote high and abundant cotton yield.
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