Tomato canker disease is a dangerous quarantine disease. At the beginning of adult disease, the lower leaves withered and drooped, the leaves were curled up, they seemed to be dehydrated, and they gradually became thicker and the leaves were yellowish brown and dry; the yellow or black strips appeared on the stems later. From top to bottom, stems are hollow and brown, and a large number of aerial roots occur in stems. The white round spots on the outer circle appear on the green fruit. They are "sparrow-like". They turn brown afterwards. The center is rough and slightly raised. Many spots can be aggregated into large irregular patches and the plants die later. According to county stations, from June 1 to June 5 in the county greenhouses, cold sheds and open-to-ground tomato surveys, tomato canker disease in the greenhouse occurs mildly, and individual sheds tend to occur. The average disease-shed rate is 11.9%, and the incidence of diseased sheds is generally 2 -3%, Individuals with severe greenhouse disease rate of more than 35% (Mengjiayuan Village), 35-50% yield loss; Cold Shed, hard fruits and tomatoes occur sporadically, exposed tomatoes have not yet occurred, the future with the number of watering The increase, especially the flood-filled greenhouses, is conducive to the occurrence and spread of tomato canker disease. Please farmers in a timely manner to prevent. Control methods: 1. Strengthen field management. Increase phosphorus and potassium fertilizers to increase plant resistance to disease and disease resistance. Shed room timely release, reduce the shed room temperature humidity. The diseased plants were found, removed promptly and disinfected with agricultural streptomycin 200 mg/l. 2. In the absence of disease or early onset, use 50% ceric acid copper 500-fold solution, or 47% Garnett 400-fold solution, or 78% 10,000-600-times solution for 5-7 days, spray 3-4 times. Times.
Grow lighting can be one of the most essential factors to successful plant production in a commercial greenhouse because grow lights help to lighten shady spots and propagation areas in the greenhouse. If you are growing tropical plants, you may need to set up grow lights if the plants don't get at least eight hours of sun each day. Most crops benefit from supplemental lighting, when increased growth and quality is converted into added revenue. We provide Growing Light and complete systems for your greenhouses.
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