Cotton cultivation and disease prevention require careful management to ensure strong, healthy growth. First, controlling excessive vegetative growth is essential. Applying plant growth regulators such as Ammonium or Chuan Zhuang Su can help manage this. A recommended dosage is 2 to 3 grams per acre, mixed with 50 kg of water, or 12 ml of CS2, also diluted in 50 kg of water. This helps promote more robust cotton plants and better yield potential.
Second, maintaining good soil structure is crucial. Regular field cultivation should be carried out to prevent soil compaction and improve aeration and water infiltration. This allows the roots to grow deeper and access nutrients more effectively.
Third, for cotton fields located on lower ground, it's important to keep drainage ditches clear and well-maintained. This ensures proper water flow and prevents waterlogging, which can hinder root development and lead to diseases.
Fourth, for cotton grown under mulch film, the plastic should be removed as soon as possible. This encourages deeper root growth and improves overall plant health by allowing the roots to access moisture and nutrients from deeper soil layers.
To enhance fertilizer efficiency, especially in fields where potassium deficiency is suspected, applying 10-15 kg of potassium fertilizer per acre can significantly improve crop performance. Additionally, adjusting the fertilizer ratio helps increase the uptake efficiency of nitrogen and phosphate, ensuring that the plants receive balanced nutrition.
For cotton affected by red leaf blight, foliar spraying can be an effective method to restore vitality. If the leaves have not yet wilted, applying 100 ml of humic acid active liquid fertilizer mixed with 45 kg of water can help rejuvenate the plant. Another option is to use a 0.2% solution of potassium dihydrogen phosphate combined with a fungicide like Maoling to both nourish the plant and protect against fungal diseases such as speck disease.
These practices, when implemented consistently, contribute to stronger cotton plants, higher yields, and improved resistance to environmental stresses and diseases. Proper timing and application methods are key to achieving the best results.
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