Cucumber dead vines are mostly withered

Cucumber wilt disease, also known as wilting disease, and some call it death sickness, soil-borne diseases. It can be killed during the entire growth period, mainly in the sapling period. Symptoms: seedlings were killed. In the early stages of damage, the seedlings are rotted when they are not unearthed; sometimes the newly emerged young stems are yellowish-brown at the base of the shoots, the wilting of the cotyledons occurs, and the seedlings die. The stems are cut open and the catheter turns yellowish brown or dark brown (different from other diseases). . Adult leaf disease. Some of the early lower leaves become chlorotic, become plaque-like, the diseased leaves turn yellow, then turn yellowish-brown, and develop upward, showing mild wilting or wilting (typical symptoms) at noon high temperature, sooner or later or after watering, It can be restored. The development will not be resumed. It will turn yellow-green to yellow-brown from bottom to top. Finally, the plants will wilt and die. In some diseased plants, the leaves did not turn yellow and wilt appeared. They recovered sooner or later. After a few days, the whole plant wilted and died, and the leaves were normal. Control measures: 1 Select resistant varieties. In order to use resistant varieties, grafting cultivation. 2 seed processing. The seeds were collected disease-free, or the dried seeds were treated with warm water at 75°C for 12 hours. Can also be used 0.1% of the active ingredient 60% carbendazim hydrochloride ultrafine powder + 0.1% flat plus solution soaking for 1 hour, or 40% formaldehyde 150 times soaking. 3 bed soil treatment. Select a new seedbed that has not been used for melons, or a seedling for Daejeon. The old seedbed, with 50% carbendazim WP or 70% dexcone wettable powder, 8-10 grams per square meter, and 5 kilograms of fine soil mix well, as a bedding and cover soil. 4 strengthen management. Implement a 3-5-year rotation. Apply enough organic fertilizer, do not apply nitrogenous fertilizer, deeply plow the land, do not injure the roots when transplanting, do not burn roots when applying chemical fertilizers, do not flood irrigation, do not make the soil too dry, cultivating loose soil, tying vines in time, snoring, Weeding, high ridge or semi-high ridge cultivation, mulching, and found that individual diseased plants were immediately removed and disinfected with lime powder. 5 soil disinfection. Field soils can be sterilized by high temperature and can also be disinfected with pharmaceuticals. For example, use 50% carbendazim WP to 2.0 kg/mu, or 70% Dukesson WP 1.5 kg, add 50–100 kg of finely ground soil, and sterilize sick soil, or apply in the sowing ditch or planting Grooves, then sowing or planting. 6 Irrigation: 60% anti-mildew WP WP 600 times, 70% dexamethasone WP 600-800 times, 50% thiophanate-methyl WP 500 times, 50% Benomyl wettable powder 1000-1500 times liquid, root disease spirit 500-600 times liquid and other irrigation roots, irrigation 250 ml per plant, 7-10 days irrigation 1, even irrigation 2-3 times, can also be used Drying wettable powder spray irrigation combination must be early prevention and early treatment. 7 smear: When the stem half of the base is longitudinally cracked, use 70% of the enemy pine powder, 50% carbendazim WP 200 times solution stem.

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