Bemisia tabaci is a small fly, and it is difficult to control the cultivation of open-grown vegetables. It should be used as a unified control. It can be used in the morning with 70% of imidacloprid water dispersible granules 6 g plus 2% abamectin EC. 20 ml or 20% of imidacloprid cream 20 ml plus 2.5% of kaempferry water emulsion 30 ml or 5% fipronil 1500 times and so on.
Root knot nematode disease Eggplant, tomato, cucumber, and celery are vulnerable. The typical symptom of the disease is to produce many rhizoma nodules of different sizes on the fibrous roots and lateral roots of the diseased plant. The 1.8% aforein cream (diluted with a predetermined amount of water) can be applied in a colonization furrow in a volume of 1 ml per square meter.
Clubroot disease This disease is an important disease of cruciferous vegetables such as cabbage, radish, cabbage, and broccoli. The typical symptoms are swollen roots and form tumors of different sizes. The diseased plants were found to be removed in time, and 70% pentachloronitrobenzene WP was used to irrigate and control the roots.
Downy mildew harm cabbage, lettuce, spinach and so on. The typical symptom is a white mold layer on the back of the leaves. It can be used as 25% thioredoxin 800 times, 64% antivirus WP 500 times to 600 times or 75% Dakkoning WP 600 times 800 times, 72% WP wettable 600 times Wait for the spray.
In addition, we must also pay attention to locusts, triceratops, leafhoppers, diamondback moth, thrips, red spider, cardamom, melon, leaf miner, beet armyworm, Spodoptera litura, melon powdery mildew, Chinese cabbage Heart disease, soft rot, virus disease, bean-coal mildew, rust, and blight disease prevention and control.
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