Seedling dumping prevention technology
The seedling damping-off disease is the most common and most serious disease occurring in the garden nursery, which mainly occurs in the seedling stage of the forest and flower plants. The main forest seedlings affected were pine, cedar, pine, pine, pine, ginkgo, beech, nanmu, camellia, etc.; ornamental flowers are aster, cockscomb, snapdragon, marigold, violet, carnation, Calla lily, zinnia, chrysanthemum and so on. The disease mostly occurred in April-June, when it was cloudy and rainy and the air humidity was high. The diseased seedlings suddenly fell down and died, affecting the survival rate of the seedlings and even destroying the seedlings.
Phytophthorasis is mainly caused by Rhizoctonia, Pythium, and Fusarium in fungi. The pathogens overwinter in the soil or on the residue of the diseased plants. They have strong saprophytic properties and can survive in the soil for a long period of time. They are called soil-accommodating bacteria. Nursery soil or shallow seedlings, improper watering in pots, improper sowing, temperature discomfort, and thin seedling growth are all conducive to the occurrence of damping-off. Continuous cropping of seedbeds or flowerbeds has caused severe disease due to high accumulation of soil bacteria. The disease is a typical soil infection.
Prevention of seedling damping-off disease, first of all to do a timely ditch drainage. Excessive rainfall in spring and summer, poor draining of ditch, pond water, and excessive moisture on the seedbed will all cause germs to spread in the soil. Therefore, for the nursery with unequal seedbed height and high groundwater level, it is necessary to clear the drainage ditch so that the rain will stay dry and the seedlings will not be affected by water so as to facilitate the loosening and ventilation of the nursery. Second, timely weeding, seedlings, remove diseased seedlings. The weeds in the nursery should be cleared early and the seedlings too dense. Weeding should be carried out in conjunction with the weeds in order to promote the vigorous growth of seedlings, increase the resistance to disease, and find that the diseased seedlings should be immediately removed to prevent cross-infection. When the seedbed is too wet, 50-75 kilograms of planting ash or fire and earth ash can be applied per acre, which not only fertilizes but also promotes the development of seedling roots, early lignification of seedling stems, and enhanced resistance to disease. Again, it is time to apply drugs. Before the onset of the disease, seedlings are tender and can be mixed with 20 kg of lime powder and 80 kg of plant ash, and 100-150 kg per mu can be used to prevent disease. After every 7-10 days, it is sprayed once with 0.5% Bordeaux mixture. It can also be sprayed with 1-20% ferrous sulfate solution. After the onset of disease, it can be diluted with 500-800 times of dixone, thiophanate, and chlorothalonil. Once every 10 days, it can be sprayed 2-3 times. The control effect is also very good.
China Antibacterial Blend Suppliers
Here you can find the related products in Antibacterial Blend, we are professional manufacturer of Antibacterial blend. We focused on international export product development, production and sales. We have improved quality control processes of Antibacterial Blend to ensure each export qualified product.
If you want to know more about the products in Antibacterial Blend, please click the Product details to view parameters, models, pictures, prices and Other information about Antibacterial Blend.
Whatever you are a group or individual, we will do our best to provide you with accurate and comprehensive message about Antibacterial Blend!
Salicylic Acid,BHA,O-hydroxybenzoic acid,Allantoin
Xi'an Gawen Biotechnology Co., Ltd , https://www.ahualyn-bios.com