The main diseases of zucchini are powdery mildew, virus disease, downy mildew, gray mold, etc.; the main insect pests are aphids, whiteflies, red spiders, American spotted fly. Prevention and control methods:
Agricultural prevention and control: choose excellent zucchini varieties that are resistant to diseases and insects. Reasonable layout, avoid continuous cropping, strengthen field management, reasonable fertilization, enhance the plant's ability to resist diseases and insects. Clean up the weeds in the field, deep turn the soil, eliminate the overwintering pathogen, insect pupa, reduce the base of the source of pests and diseases.
Physical control: use the pest's repellency for control: hang yellow millet boards or yellow oil boards to trap aphids; use frequency vibration insecticidal lamps and sex lures to trap the adults of nocturnal moths and other pests.
Chemical control: zucchini pests and diseases chemical control methods table No. Control
object Pesticide name Use method Maximum number of applications Safe interval (days) 1 Powdery mildew 20% powdery mildew emulsion
50% sulfur suspension
75% Chlorothalonil 2000 times spray
250 times spray
800 times liquid spray 3
3
3 7
7
7 2 Virus Disease 1.5% Phytophthora
20% Virus A Wettable Powder
5% Mycotoxin Cleaner
Mixture of Potassium Permanganate and Etodolac 600 times liquid spray
500 times liquid spray
200-300 times liquid spray
1000 times liquid and 6000 times liquid mixed spray 3
3
3
3 7
7
7
7 3 Fusarium fungus 70% ethofumesate-manganese-zinc wettable powder
72.2% PURIFLEX aqueous agent
40% Aluminum ethylphosphate wettable powder
64% Aluminum pesticide wettable powder 500 times spray
800 times spray
200 times spray
400 times spray 3
3
3
3
3 7
7
7
15 4 Gray mold 50% speed kling wettable powder
50% paracetamol wettable powder 2000 times liquid
1000-1500 times liquid spray 3
3 7
7 5 Aphids 10% big Kungfu wettable powder
2.5% Tennessee wettable powder
2.5% Kungfu emulsifiable oil 1000 times liquid Spray
2000 times liquid spray
2000 times liquid spray 3
3
3 7
7
7 6 Whiteflies 10% imidacloprid or 3% acetamiprid wettable powder
25% pesticide wettable powder (1000-1500) times liquid
1500 Spray 3
3 7
7 7 Red spider mite 73% carbofuran emulsifiable concentrate
25% mirex wettable powder (1000-1500) times solution
1000 times solution spray 3
3 7
7 7 American spot fly 1.8% carbofuran emulsifiable concentrate
1.8% abamectin 2500 times solution Spray
3000x spray 3
3 7
7