Cucumber common pests are: downy mildew, blight, bacterial angular leaf spot, scab, powdery mildew, anthracnose, LIRIOMYZA, fusarium wilt and gummy stem blight, virus diseases?.
First, downy mildew and disease
Prevention of downy mildew can add 25 grams of ethylphosphorus aluminum manganese zinc, streptomycin 3 million units, 150 grams of sugar , 50 grams of urea , 150 grams of rice vinegar into a mixed solution per 15 kg of water , spray control, 5-7 days .
Use aerosol: use 5% chlorothalonil aerosol, 100-180 grams per acre , split 5-6 , ignite overnight in the evening, smoke once every 7 days, even smoke three times.
Downy mildew and disease can also be used 60% killing 1000 times liquid, 72% frost urea manganese zinc 600 times liquid, 72% DuPont condensed WP 400 times liquid, 72% grams of anti- gel WP 400 times, 58 % metalaxyl manganese zinc 500 times solution, 75% chlorothalonil 500 times solution or 70% ethyl phosphine - manganese zinc wettable powder 400 times solution + synergist. Or 72% cream WP 700 times solution, 10% Kejia suspending agent 2500 times solution, 52.5% inhibition 2,000 times solution, 66.8% mold gram 500-700 times solution spray control.
Plex should be used with caution in the prevention and treatment of cucumber downy mildew to prevent phytotoxicity.
Second, bacterial angular spot disease
It can be controlled by 50% DT500 times solution, 60 % succinate aluminum ( DTM ) 500 times solution, and 77% can kill 400 times solution. Once every 3-5 days, even spray 2-3 times.
Third, black star disease
You can use Fuxing 8000 times solution, 50% carbendazim 800 times solution + 70% mancozeb 800 times solution or 45% chlorothalonil aerosol to smoke, 200-250 grams per acre , and prevent 3-4 times.
Fourth, powdery mildew
Triadimefon 1500 times can be 15%, "120 agricultural antibiotic" 150 times, 300 times suspension of 50% sulfur, 43% Horlicks 4000 times. Once every 7 days, the medicines are used interchangeably. It is not advisable to use the powder rust, because it will inhibit the growth of cucumber.
Five, anthracnose
The use of 58% metalaxyl Mn-Zn wettable powder 500 times solution, mancozeb, and anthrax has certain control effects, and the effect of using Pingruling 600 times liquid to control cucumber anthracnose is also very good.
Liriomyza sativae
It is controlled by using 1.8% Qiqisu 3000 times liquid, and adding 500 times of anti-reaction liquid (damage) and appropriate amount of liquor can improve the curative effect. The old leaves with severe damage in the lower part were removed and deeply buried before treatment.
7. Fusarium wilt and blight
Spray with antibacterial agent before onset: 50% methyl thiophanate 1000 times solution, 12.5% synergistic carbendazim 300 times solution. It can also be rooted with 60% DTM wettable powder 350 times solution or 20% methyl chlorophosphorus emulsifiable concentrate 1000 times solution or 10% double effect spirit 300 times solution. Each plant is filled with 500 grams, once every 3-4 days. I pour three times.
Eight, viral disease
In the early stage of the disease, spray 20% virus A1000 times liquid or 1.5% z plant disease 1000 times liquid in time, 7-10 days, and spray 2-3 times. Adding 20ppm gibberellin, Yunda 120 , and potassium dihydrogen phosphate can increase the drug effect.
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