According to the reflection of the friends of vegetable farmers, the autumn vegetable pests began to enter the initial stage of their development. According to the author's understanding, the main pests and diseases are tomato disease, pepper disease, celery disease, cucumber disease, cruciferous diseases, bean worms and so on.
First, the main pests and diseases
1. Diseases of tomatoes: In the Shougang Office of Shouguang City, the author found that tomatoes grown by many vegetable farmers have more or less rotten fruit, mainly due to bacterial soft rot, anthrax, and fungal brown spoilage.
2. Diseases of peppers: Due to the relatively heavy precipitation since late July and the hot and humid weather during the volatilization period, the epidemic of chili diseases has been triggered. The most prominent diseases in the near future were epidemics and soft rot, as well as physiological defoliation.
3, celery disease: The current occurrence is mainly the blight and leaf blight.
4. Diseases of cucumbers: After this year's autumn, the rainfall is high, the recent rainy days are relatively high and the temperature is relatively low. Therefore, the occurrence of powdery mildew in cucumbers is heavy.
5, cruciferous pests: cruciferous vegetables, the outstanding problems are downy mildew, soft rot, white spot disease and cabbage caterpillars, diamondback moth and vegetables.
6, bean pests: Recent surveys, bean pests mainly rust, anthrax and soybean meal.
7. Liriomyza sativae: The amount of insects in the recent period has increased significantly. The main damage is cucumber, eggplant, beans.
8. Bemisia tabaci: Entering the peak period in early August, the number of occurrence increased.
Second, control advice
1, timely treatment of sickness. Phytophthora blight and soft rot disease occurred in plots. The central diseased plants should be removed in a timely manner and the diseased area should be disinfected with lime. Collect the disease and bring it out to destroy it.
2, timely control of disease epidemics, strengthen prevention. Early onset medication, downy mildew: 10% Kejia suspension with 1000 to 1500 times the liquid, can be mixed with 53% Jin Lei 500 times, increase the conductivity of the absorption, or with a soluble powder of 42% trichloroisocyanuric acid 3000 ~ 4000 times liquid, plus 300 times the sugar control; white spot: with 10% Dioxiconazole (Shigao) water dispersible granules 1500 times; blight: 66.8% of the drug moldy WP 700 ~ 800 Times of liquid, 52.5% epidemic quick net 2000 times liquid; eggplant powdery mildew: control with 12.5% ​​myclobutanil 500 times, 10% dioxiconazole (world high) 2000 times; anthrax: with 25% bromine bacteria 500 times clear liquid, 70% Prosin Zinc (Aetnax) WP wet spray 600 times, application requirements for continuous control 2 to 3 times, interval 7 to 10 days; celery spot blight: with 47% Garnett 500 times Liquid, leaf blight can be used 10% Dioxiconazole (World High) 2000 times control.
3, pest control, pay attention to rotation drugs to avoid drug resistance. Plutella xylostella is a very resistant insecticide, and the control drug 5% CPT is 1500-2000 times mixed with 4.5% beta-cypermethrin EC 1500 times, or BT200 times, or 5% Fipron (Flupro) suspension. 2500 times the agent, 1% Avisol cream 2000 ~ 3000 times solution. L. sativae was treated with 1.8% abamectin 2000 times. It is forbidden to use highly toxic pesticides.
4. Joint prevention and control in the same region. The prevention and control of Bemisia tabaci must be controlled in the same area to avoid the escape and spread of Bemisia tabaci. Spraying can be used 1500 times imidacloprid 1500 times, 1.80 percent avermectin 3000 times, 20% diclofenac EC 1000 times, 3% acetamiprid EC 2,000 times, 5% Rui Jin Te 1500 times, for whitefat Better control effect.
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