In recent years, with the adjustment of rural industrial structure, soil pathogens have increased year by year due to continuous cropping in some areas(plastic nursery pots). Before sowing, eggplant verticillium disease has become more and more serious, affecting the yield and quality of eggplant, and has become one of the obstacle factors in eggplant production. What are the control measures(21 cell propagation trays wholesale)? Eggplant verticillium wilt, also known as madness, black heart disease, and wilt disease, is an important disease for eggplant.
(5 gallon plastic nursery planters online)Eggplant can be infected at the seedling stage, and the field shows symptoms after fruit setting. Deuteromyces genus Verticillium(plastic nursery pots wholesale). The pathogen grows white hyphae on the medium first, and then a large number of black sclerotia convolvulus stalks are formed, each branch has 3 to 4 branches; conidia are colorless, single cell, long oval(32 cell propagation trays wholesale). The optimum temperature for growth of the pathogen is 22.5 ° C, and it can grow under the condition of 30 ° C culture.
In addition to harming eggplant, it is also harmful to 38 families and more than 180 kinds of plants such as pepper, tomato, potato and other solanaceae vegetables and melon crops(black plastic nursery pots). The leaf margin and leaf veins of the lower petiole of the lower part of the plant are yellowing, and gradually develop into a half-leaf or whole leaf yellowing(50 cell propagation trays wholesale), the leaf edge is slightly curled upward, and sometimes the lesion is limited to half of the leaf, causing the leaf to be distorted.
Then, what are the symptoms of eggplant verticillium? When the seedlings are planted(cell trays), they generally do not damage the roots or the roots of the wounds, and there is no seedling period after planting, which enhances the disease resistance. The host of good growth bacteria is widely distributed. The disease begins to occur after the eggplant is placed. The pathogen of eggplant verticillium is Verticillium dahliae(72 cell propagation trays wholesale). Therefore, the vegetable seedlings are thick and the roots are developed.(5 gallon plastic nursery planters online)
When the disease develops rapidly, the whole leaves are often yellowish and brown and dead(plastic nursery pots manufacturers). Choose disease-free varieties, which can be harvested from disease-free fields or from disease-free areas. For seed disinfection, soak seeds in warm water at 55 ° C for 20 to 30 minutes: or use 70% pentachloronitrobenzene powder for seed dressing at 0.2% by weight of the seed(98 cell propagation trays wholesale). Disease-free soil nursery or bed soil disinfection Seedbeds should be selected for high dryness, convenient drainage, fertile soil, and no pathogens.
(5 gallon plastic nursery planters online)Before sowing, the seedbed soil should be fully turned over(wholesale nursery pots), applied to compost and compost, and disinfected with 50% carbendazim WP or 70% pentachloronitrobenzene per square meter of 8-10 g. Carry out the rotation. Rotating with rice for 1 to 2 years, and rotating with non-solanaceae vegetables for 4 to 5 years. Seedlings are used for seedlings(105 cell propagation trays wholesale). A plate of seedlings in a hole. The plants are evenly distributed, the nutrient soil is rich in nutrients, and the permeability is good.
Application of grafting seedling technology(15 cell propagation trays wholesale). According to systematic observations and data, the grafting effect of eggplant grafts against Verticillium wilt is strong, and the incidence rate can be reduced by 4.7% to 34.5%. Applying decomposed organic fertilizer, and applying nitrogen, phosphorus and potassium mixed fertilizers, timely cultivating and cultivating soil to promote root growth(128 cell propagation trays wholesale). The diseased plants should be removed in time and carried out buried or burned outside the vegetable fields.