In the process of grafting watermelon seedlings and growth in the greenhouse, sometimes the seedlings wither. The measures for prevention of withering are described as follows:
Scientific selection of rootstocks In common watermelon rootstocks, rootstocks with resistance to wilt disease that are not susceptible to acute wilt symptoms are preferably pumpkin rootstocks, followed by gourd rootstocks and watermelon dung rootstocks. When grafting, it is necessary to select good disease-resistant rootstock varieties, such as green anvil one, all-round armor F1, disease-resistant super abundance.
Chemical control The use of chemical agents to control fusarium wilt is also an effective method to prevent withering. Soak the seeds with 400-fold solution of 70% thiophanate-methyl for 30 minutes, then rinse with water. Can also be used at the beginning of the disease in the roots of the disease with 40% Guacurious 1000 times liquid rooting, 250 grams per plant irrigation, irrigation every 7 to 10 days, a total of irrigation 3 times.
Using plug-in method, the depth of colonization should be suitable in the process of grafting of watermelon. The plug method is better to use, and it can be more resistant to wither. Grafting wounds should be 1 to 2 cm away from the ground when planting, so as to avoid adventitious root formation of self-rooted seedlings and loss of grafting significance.
Strengthen field management to pay attention to drainage and water supply uniformity, to avoid excessive fruit set, pruning to ensure that the number of leaves set fruit, maintain moderate luxuriant stems and leaves, so that reduce the evaporation of some, maintain strong root activity. The soil temperature in the later stage of growth is high, and the grass can be covered on the ground while controlling the use of nitrogen fertilizer. During fruit enlargement, spraying 1% magnesium sulfate solution on the leaves can prevent the occurrence of acute wilt disease.
Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
The main step of skin whitening is to inhibit melanin production. Whitening agents on the market to inhibit melanin production mainly include AA2G, arbutin and its derivatives, kojic acid and its derivatives, vitamin C and its derivatives, endothelin antagonists, licorice flavonoids, cyanines Vegetarian, as well as green tea, azalea, grape seed, Rhodiola and other plant extracts.
Skin Whitening,Ascorbic Acid Glucoside,Skin Whitening Giga White Powder,Pure Monobenzone Powder
Hunan Insen Biotech Co., Ltd , https://www.insenhealth.com