In general, yellowing and shrinking of the heart during the seedling stage can hinder proper balling. In the adult stage, the affected leaves become brittle and crumpled, with a false heart and gray-brown spots appearing on the foliage, which negatively impacts both yield and marketability. High temperatures and drought, especially when accompanied by elevated night temperatures, create favorable conditions for disease development. To prevent this issue, the following measures are recommended:
Ensure consistent watering without overwatering the seedlings. Follow the principle of "three-water seedlings and five-water seedlings," meaning water once every two to three days. It's best to water in the evening to reduce evaporation and improve moisture retention.
Strengthen the plants by balancing nitrogen and potassium levels. Apply a single base fertilizer application, including 5 kg of bio-potash, 50 kg of potassium sulfate compound fertilizer, and 15–20 kg of ammonium bicarbonate per mu. This helps promote strong and healthy growth.
Promptly control pests such as locusts to eliminate the source of infection. As soon as they are detected, spray the area immediately. Adding 0.3% potassium dihydrogen phosphate during spraying can enhance effectiveness and boost the plant’s resistance to disease.
If any diseased plants are found, remove them immediately to prevent the spread of infection. Spray with a solution of A500 or Plant Disease Spirit diluted 500–800 times for effective prevention and treatment. Regular monitoring and timely action are key to maintaining healthy crops.
By implementing these practices, farmers can significantly reduce the risk of disease and ensure better crop performance.
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