How to promote the "problem of cotton" as soon as possible

Cotton plants in heavily decomposed fields show signs of poor growth. The plants are stunted, with thin stems and smaller upper leaves that appear pale and thin. The fruit branches are weak, the buds are small, and the medlar leaves have a light color. The closed bolls are also small, and the branches lack strength, preventing them from developing properly. The strains are not well distributed on the ridges. To address this issue, it's essential to apply nitrogen fertilizers both through root application and foliar sprays simultaneously. The goal is to increase the number of upper buds, make them larger, and prevent early decline. In most fertilizer-deficient cotton fields—except for those with highly fertile soil—the main problem lies in the slow development of upper fruit branches. The buds and leaves on these branches fail to grow at the expected rate. To counter this, continuous nutrient supplementation via foliar sprays is necessary. This helps promote more bolls, larger knots, and better seed formation on the upper parts of the plant. In potassium-deficient fields, despite high temperatures that enhance the release of available potassium from the soil, the plants still struggle to meet their potassium needs. The consumption of available potassium in the soil remains low. Most fields haven't shown visible potassium deficiency symptoms yet. However, in areas where little or no potassium fertilizer was applied, especially after heavy early rains, symptoms such as yellowing and curling of lower leaves have already appeared. This serves as an early warning sign. For these fields, quick-acting potash fertilizer should be applied either through soil application or foliar spraying, or a combination of both. In drought-affected cotton fields, water scarcity disrupts nutrient uptake, leading to poor growth. These fields can be considered "fertilizer-loss" areas. Key symptoms include large upper leaves but small buds, a shortened bud period, increased flowering, and rapid upward movement of flowering and boll development. The resulting bolls are small. Due to the harsh drought conditions, the plant may develop separation at the bud pedicel and petiole, increasing boll shedding. Lower leaves may also turn brown and fall off due to water stress. In such cases, immediate irrigation is ideal. If watering isn’t possible, foliar sprays can help delay the onset of separation and reduce further loss.

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