How to prevent watermelon virus disease
In recent years, the occurrence of watermelon virus disease in watermelon production areas has caused a decrease in watermelon production and quality, which has seriously affected the high yield, stable production, high quality, and high efficiency of watermelon. Therefore, comprehensive measures must be taken to prevent and control it. 1. Selection of disease-resistant varieties of production should be selected as far as possible to use strong varieties of anti-virus disease for cultivation. 2. Soak seeds before sowing or seedling with hot water of 55-60°C for 20 minutes, then soak in seeds with 0.1% potassium permanganate solution for 30 minutes, or soak with 10% trisodium phosphate solution for 20 minutes, wash with water sowing. 3. Timely control of pests 1 Cover insect nets. During the nursery period and in field coverage, the insect nets are isolated to block insects from spreading viruses. 2 timely control of worms, planthoppers, leafhoppers and other poisoning pests. Remove weeds from the field, eradicate breeding grounds for insect pests, hang sticky board, trap and kill maggots, fly fleas, and leafhoppers. When serious locusts occur in nearby crops, they can lay silver-gray films to avoid maggots to reduce the migration of locusts; The locusts, planthoppers, and leafhoppers on crops near the fields of Guantian and field weeds should be uniformly sprayed and prevented to prevent the transmission of poisonous insects in fields. The agents can be selected from 10% imidacloprid EC 1000-1500 times, or 3% pyridine. Insect mites EC 1500 to 2000 times, or 20% fenpropathrin EC 2000 times. 4. Strengthen field management 1 Optimized cultivation. Deep plowing before the winter to eliminate the underground pests; rational rotation, to avoid heavy flooding, the implementation of large high ridge film cultivation. 2 Strengthen water and fertilizer management. Apply basic fertilizers, increase phosphorus and potassium fertilizers, spray foliar fertilizers properly, pay attention to drought prevention, and timely watering in appropriate quantities to promote accelerated plant growth, robust growth, and increased resistance to disease. 3 control of infection. Dry leaves and weeds are completely removed during nursery and planting, and no cultivator is used at the seedling stage to reduce root wounds and eliminate root infections; damages are minimized in field operations such as pruning, vine-crushing, pollination, etc. The sequence of the posterior strains is carried out, and the snoring should be performed in sunny sunshine to allow the wounds to shrink quickly; the early stages of the disease should be promptly removed and destroyed; the plants used in the sick fields should be disinfected; The watermelon field can not be used as a melon, and the plots for planting watermelons should be kept away from the vegetable gardens and melon lands to prevent the viruses on melons and zucchini from being transmitted to the watermelons by the aphids. 5. In the early stage of disease prevention, use 20% of virus A WP 500 times, or 1.5% of phytopathogenic Ling emulsion 1000 times, or 20% of morpholin WP wettable powder 500 to 600 times, or 5% of bacteria. Poisonous water agent 500 to 600 times liquid control, spray every 7 to 10 days, even spray 3 to 4 times. Organic turmeric extract is derived from the dried rhizomes of turmeric. Turmeric is a ginger plant with a botanical name of Curcuma longa L. The main ingredients of turmeric extract are curcumin. And the curcumin ratio can reach 95% or more. Turmeric has long been used as a natural pigment (E100) in the food industry. It has strong tinting strength, does not fade, but is sensitive to light, heat. Mainly used for dyeing canned foods, sausage products, and sauces. Turmeric Extract,Organic Turmeric Extract,Turmeric Extract Powder,Organic Turmeric Root Organicway (xi'an) Food Ingredients Inc. , https://www.organic-powders.com