Artemisia selengensis is a vegetable. Therefore, the use of pesticides must be reduced or physical methods should be used for prevention. The following are the characteristics of anthrax and the use of pesticides:
Pathogens and pathogenesis characteristics: the pathogen is anthrax spp., which belongs to the subgenus. The pathogens live on the diseased plants with the mycelium and the spores on the diseased plants or survive with the diseased bodies. When the warm and humid springs are suitable, the spore trays produce conidia, which are sprayed by rain or small insects. And other media spread, invading from wounds or natural orifices. After the onset, the diseased part formed new spore trays and conidia, which were infected as re-infected inoculants. In the Guangdong anniversary, there are places where Asteraceae and other Compositae plants are planted, and the pathogens are transmitted and transmitted in different fields in the field, and there is no obvious wintering period. Usually the disease is conducive to the occurrence of warm, humid, foggy weather. Plants with low humidity, poor drainage, or excessive close planting, or those with partial application of nitrogen fertilizer are more susceptible to disease, and there is still a lack of investigation and comparison of resistance between varieties. In Guangzhou, this disease is the same as round spot disease. The incidence is more common.
Control measures: 1. Comprehensive prevention and control measures based on cultivation and disease prevention and pesticide control should be adopted. Serious prevention and treatment of black spot or anthrax can all be treated with both. 2. Spraying a new high-fat film 600 times a night before the onset of illness, can automatically form a polymer protective film that is invisible to the naked eye, optimizing the water absorption, breathability and light transmission quality of the plant. Blocking pests and smuggling signals and weakening the media to resist and defend against natural environmental disasters. 3. In places or fields where anthracnose is the main source, the medicine must be used together with the new high-fat membrane. The high-toxic pesticides can be modified to be poisoned, the poisoned pesticides are low-toxic, and the low-toxic pesticides are slightly toxic. Control the volatile and volatile pesticides, prevent the rainwater from scouring, reduce the dosage per acre by half, and improve the control effect by multiple times.
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