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Why should fertilizer be applied promptly after cotton topping?

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After cotton topping, it is the time when the various organs compete most intensely for nutrients. The development of young bolls after flowering requires nutrients, the enlargement of buds and flowering require nutrients, and the elongation of the upper fruiting branches and the growth of new leaves and flower buds require nutrients. If the nutrient supply is insufficient, either the boll set in the middle and lower parts decreases, or there are no bolls in the upper part, or after boll setting the plant prematurely ages, leaves drop, and boll weight decreases, none of which can achieve the goal of high yield. Therefore, supplementation should be carried out promptly by combining root-zone fertilization with foliar spraying, mainly with nitrogen and potassium fertilizers, and appropriately applying phosphorus fertilizer on phosphorus-deficient soil.

After cotton topping, it is the time when the various organs compete most intensely for nutrients. The development of young bolls after flowering requires nutrients, the enlargement of buds and flowering require nutrients, and the elongation of the upper fruiting branches and the growth of new leaves and flower buds require nutrients. If the nutrient supply is insufficient, either the boll set in the middle and lower parts decreases, or there are no bolls in the upper part, or after boll setting the plant prematurely ages, leaves drop, and boll weight decreases, none of which can achieve the goal of high yield. Therefore, supplementation should be carried out promptly by combining root-zone fertilization with foliar spraying, mainly with nitrogen and potassium fertilizers, and appropriately applying phosphorus fertilizer on phosphorus-deficient soil.

It should also be noted that, in combination with foliar fertilizer, adding an appropriate amount of cotton boll-strengthening capsule to every 15 kg of liquid can thicken the cotton's nutrient transport conduits, increase the amount of nutrient transported, enhance the expansion vigor and resistance of cotton bolls, accelerate the cotton plant's cyclic budding and cyclic boll opening, and improve fiber quality. At the same time, it can increase the efficacy of various pesticides and foliar fertilizers by 30%.

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