Jujube fruit disease is often mixed with anthrax, which has become an important disease that threatens the yield and quality of jujube fruit. The disease rate is 10% to 50%, and the serious year is more than 90%. Even the harvest is unacceptable, and the disease fruit loses its food value. Ma Zhifeng, professor of Yangling Vocational and Technical College, reminded us to understand the law of occurrence and scientific prevention.
After the jujube is picked, the jujube or fruit in the jujube garden is completely removed in the fall and winter seasons, and the treatment is concentrated. An older tree that scrapes and burns old bark before jujube sprouts. Increase organic fertilizer and phosphorus, potassium, less nitrogen fertilizer, a reasonable intercropping, improve the conditions of air and light conditions. Drain the water immediately after rain and reduce the humidity in the field.
Strengthening the control of jujube pests, especially sucking mouthparts and pod pests, such as peach pests, scale insects, cockroaches and other pests, can reduce wounds and effectively reduce the occurrence of diseases. Insecticides were sprayed in the early stage to control food buds like weevil, leafhopper, and tinea lancea; combined insecticides were applied from August to September in the later stage; insecticides such as cypermethrin and fenzoyl alcohol were sprayed to spray on the fruit of jujube fruit. Control effectiveness can reach more than 95%.
According to the temperature and rainfall conditions, spray 2 or 3 times in late August, and 10 to 15 days before harvest is the critical period for prevention and treatment. The available agents are: 50% carbendazim WP solution + 80% mancozeb WP; 70% thiophanate-methyl WP solution. Spraying should be uniform, the fog should be fine, so that the fruit surface full of medicine, in time to fill the rain spray.
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