Cotton Cultivation Techniques: How to Spray Potassium Fertilizer During the Flowering and Boll Stage?
How to spray potassium fertilizer during the flowering and boll stage of cotton? Here is the method. When cotton enters the late flowering and boll stage, the root system's ability to absorb nutrients gradually weakens, while the buds and bolls on the above-ground part continue to grow and develop. In cotton fields lacking fertilizer, or fields with many bolls set in the middle and lower parts and poor nutrition in the upper part, potassium fertilizer should be sprayed in time. Potassium sulfate is the most suitable potassium fertilizer for spraying...
How to spray potassium fertilizer during the flowering and boll stage of cotton? Here is the method
When cotton enters the late flowering and boll stage, the root system's ability to absorb nutrients gradually weakens, while the buds and bolls on the above-ground part continue to grow and develop. In cotton fields lacking fertilizer, or fields with many bolls set in the middle and lower parts and poor nutrition in the upper part, potassium fertilizer should be sprayed in time.
Potassium sulfate is the most suitable potassium fertilizer for spraying, such as the Epsom potassium sulfate produced in Russia, which contains 52% potassium oxide. Spray 30 kg of 2% potassium sulfate solution per mu each time, for 3 consecutive sprays. When spraying fertilizer, both the front and back sides of the cotton leaves should be wet, and the leaves on the upper half of the cotton plant should be the main target of spraying. Generally, foliar fertilizer spraying requires the leaves to remain wet for 0.5 to 1 hour, and it is best to spray on a windless evening or on a cloudy day.
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