Fertilizer uses a well-made crop "good health"

In the field, farmers often ask, "Why are there so many bollworms in this area if we're using the same insect-resistant cotton varieties? The disease of wilt is especially severe..." In reality, these issues are closely linked to improper fertilization practices. Fertilizers have become widely used in modern agriculture due to their high purity, quick results, and ease of application. They have significantly boosted crop production. However, while proper fertilization can enhance crop metabolism, increase yield, and improve resistance to stress, excessive or imbalanced use can lead to metabolic disorders in plants, making them more vulnerable to pests and diseases. Studies show that over-application of nitrogen can cause crops to develop dark green leaves, with carbohydrates being primarily used for nitrogen assimilation. This reduces the synthesis of cellulose and lignin, resulting in weak, soft stems that are prone to lodging. Excess nitrogen also increases soluble nitrogen levels in plants, making them more susceptible to diseases like wheat sheath blight, powdery mildew, and root rot. In cotton fields, too much nitrogen leads to tall, dark green plants, which attract bollworms and result in serious damage. It also worsens the occurrence of cotton wilt and verticillium wilt. High-nitrogen environments promote poor air circulation and high humidity, increasing the risk of cotton leaf spot and other diseases. Research has shown that as nitrogen application increases, the nitrogen content in cotton leaves rises, providing better nutrition for spider mites, leading to rapid population growth and greater damage. Using a balanced amount of essential nutrients such as nitrogen, phosphorus, and potassium, along with micronutrients like boron, zinc, magnesium, calcium, sulfur, molybdenum, and manganese, can support healthy plant metabolism, strengthen resistance, and reduce pest infestations. For example, phosphorus helps root development, while boron and manganese help prevent cotton yellow wilt and blight. Potassium fertilization in potassium-deficient soils can reduce fungal and bacterial diseases and also help control pests. Crop diseases also include nutritional deficiency-related conditions. For instance, rice lacking potassium often shows brown spots on its leaves, while cotton deficient in boron may exhibit “bud but no flower” symptoms, with small, easily脱落 buds. In rapeseed, boron deficiency causes “false flowering,” and in maize, zinc deficiency leads to “white bud disease.” Proper fertilization not only prevents and treats physiological disorders caused by nutrient deficiencies but also helps reduce the spread of infectious diseases. Leaf blight in cotton, for example, is often linked to potassium deficiency, and applying potassium fertilizer during the budding stage can significantly lower disease incidence, especially when combined with appropriate nitrogen levels. Fertilization is a science that requires careful planning. Farmers should base their practices on soil testing and tailored formulas, adapting strategies to local conditions. By doing so, they can enhance crop resilience, maximize yield potential, and reduce the need for chemical pesticides. This approach supports sustainable agricultural practices that are environmentally friendly, cost-effective, and productive.

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