What is jujube fruit shrinkage disease? Basic knowledge of jujube tree management
What is jujube fruit shrinkage disease? What causes it? How to prevent and control it? Please give an introduction. The main causes of jujube fruit shrinkage disease are the many wounds on the fruit surface caused by wind, rain and pests, and it is formed by excessive application of nitrogen fertilizer, dense branches and leaves, and poor ventilation. You can refer to the following methods for prevention and control: 1. Strengthen orchard management, apply more organic...
What is jujube fruit shrinkage disease? What causes it? How to prevent and control it? Please give an introductionThe main causes of jujube fruit shrinkage disease are the many wounds on the fruit surface caused by wind, rain and pests, and it is formed by excessive application of nitrogen fertilizer, dense branches and leaves, and poor ventilation. You can refer to the following methods for prevention and control:
1. Strengthen orchard management, apply more organic fertilizer and phosphorus and potassium fertilizers, and apply nitrogen fertilizer and boron, calcium and other fertilizers reasonably. Carry out scientific shaping and pruning so that the tree canopy is well ventilated and lets light through. And promptly prevent the occurrence of piercing-sucking pests, such as scale insects, green plant bugs, jujube leaf gall mites and leafhoppers, etc.
2. In mid-to-late August before and after the onset of the disease, use streptomycin at 100-140 international units/ml to spray the whole tree, spraying once every 7 days, for a total of 3-5 sprays.
At the same time, add 20% methomyl 5000-fold solution or 5% Cascade emulsifiable concentrate 1000-1500-fold solution to the above liquid to kill the disease-transmitting insects.
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