Cucumber and specific pest control methods-Iota

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Service > Cucumber and specific pest control methods

Cucumber and specific pest control methods

Cucumber, also called cucumber, assassination melons, cucumbers shallow root distribution, regeneration capability is weak. Cucumber pests mainly cucumber downy mildew, powdery mildew, cucumber anthracnose, Botrytis cinerea based.
1, downy mildew: In the case of low-lying poor ventilation watering too much harm is more serious, major damage leaves, and occasionally damage stems, pedicels. Early onset of water-soaked lesion polygonal, not perforated lesion, the lesion may grow on the back of a black mold layer humidity, the more serious because of the number of lesions, expand quickly, lesions heal each other, resulting in leaf scorch early death .
Control methods: Ecological Control: maintain good indoor ventilation, control room temperature maintained at about 25 degrees during the day, evening controlled at about 15 degrees. Chemical control: when the disease bacteria by 50% to 2000 times spray watered, ill repeat spray in 3-5 days time.
2, powdery mildew: damage various parts of the shoot, but the leaves, vine-based victimization. Near the beginning of the blades on both sides of a white round small pink spots, after expansion into the edge of a large white powder obvious area. Serious whole leaf covered with white powder, due to the late onset of mildew mycelium white mature grayed diseased leaves wilting, there are black specks.
Control methods: field management: try to use resistant varieties, pay attention to light, reasonable irrigation, reducing air humidity, enough organic fertilizer. Chemical control: the early stages with the Sentinel particle abundance bactericidal spray watered 1000 times, at intervals of 5 to 7 days, spray once, repeat 2 or 3 times.
3, Botrytis cinerea: The disease is not only harmful cucumber, also green peppers, eggplant, beans, etc. are destroyed, mainly against Botrytis cinerea of cucumber leaves, fruits, flowers, Botrytis bacteria invade the female flowers withered, taupe grow mold layer, and then invade Yougua, causing the top of the rot, soft atrophy, big melon yellow first victim Ministry of disease until rot off.
Control methods: field management: high wow cultivation, reduce field humidity, reasonable irrigation, evening watering, humidity and ventilation should be appropriate, to promote its robust growth. Chemical control: the early stages of 1500 to 2000 or 50% more mold WP 800 to 1000 times spraying with 50% procymidone WP.
4, Anthrax: The main hazard stems, blades. Beginning to flooding of small spots, leaves victims nearly circular spots, red-brown; outside halos, dry spots during the middle of rupture. Dark brown spots occur fruit victimization, easy bending.
Control methods: soil treatment: the introduction of more than 3 years and non-melon crop rotation. Soil disinfection, selection of resistant varieties, crop rotation, remove the sick plants, increasing P and K applied. Chemical control: Spray 1: 2: 100 Bordeaux mixture, or 65% mancozeb 500-800 times, 80% thiram WP 800 times, 70% WP Mancozeb 400 times or 45% chlorothalonil aerosol fumigation 250 g per acre. Use every 7 to 10 days 1, 3 to 4 times in a row.

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