What are the control methods for black heart in strawberries?
Symptoms of strawberry black heart disease: the first inflorescence grows deformed, the inflorescence, heart leaves, fruit stalks and leaf stalks are extremely short and cannot emerge, the flowers do not open normally at the base, and the edges of new leaves dry up and turn black. In severe cases, the entire first inflorescence and all new leaves dry up and turn black, which farmers call "black heart disease". Control measures: 1. Reduce chemical fertilizer...
Symptoms of strawberry black heart disease: the first inflorescence grows deformed, the inflorescence, heart leaves, fruit stalks and leaf stalks are extremely short and cannot emerge, the flowers do not open normally at the base, and the edges of new leaves dry up and turn black. In severe cases, the entire first inflorescence and all new leaves dry up and turn black, which farmers call "black heart disease".
Control measures: 1. Reduce the amount of chemical fertilizer applied, increase the application of bio-organic fertilizer, improve the soil's own nutrient-supplying capacity, and improve the degree of soil salinization. Reduce the amount of inorganic chemical fertilizer used, increase bio-organic fertilizer with phosphate-solubilizing, potassium-solubilizing and nitrogen-fixing capabilities, and release the phosphorus, potassium and trace elements that have been fixed. At the same time, improve the soil's physical properties.
2. Do not pick leaves unless they turn yellow; resolutely do not remove green leaves without reason, so that the plant has more leaf area, increases the amount of photosynthetic products, and improves nutrient supply during the reproductive growth stage.