Major potato anthracnose is mainly damaged by leaves and vines. The leaf spot begins from the leaf tip or leaf margin, semicircular, elliptic to indeterminate, brown to dark brown, with deep edge color, obvious boundaries of diseased and healthy parts, grayish-brown to grayish white in the central part of the diseased spot, and prominent ring-streaked bands. It is not obvious that when the humidity is high, there are scarlet or black spots on the surface, which are signs and symptoms of the disease. On the vines, the spots were fusiform to indeterminate. They were dark brown and slightly sunken. Around the stem one week later, the vines often died. Control methods: Spray control at the early stage of disease. 75% chlorothalonil + 70% thiophanate-methyl wettable powder (1:1) 1500 times, or 69% ank manganese + 75% chlorothalonil wettable powder (1:1) 1500 times. Or 30% copper oxychloride suspension + 70% mancozeb (11:1, ie, mix and spray) 1 000 times, or 50% applied power wettable powder 1000 times, or 25% carbon tetrachloride can be wet 600 times the powder, or 40% triadimefon carbendazim WP 800 times, alternately sprayed 3 - 4 times, depending on the disease 7--15 days 1 time. Reasonable arrangements should be made for airy ventilation, rational use of water, fertilization and spraying of leaf fertilizers, and fitness cultivation to enhance the disease resistance of plants. After the harvest, clean the garden, burn the sick body, deepen the sun, in order to reduce the source of the disease.
A greenhouse(also called hothouse)is a building or complex in which allow for greater control over the growing environment of plants. Depending upon the technical specification of a greenhouse, key factors which may be controlled include temperature, levels of light and shade, irrigation, fertilizer application, and atmospheric humidity. Greenhouse may be used to overcome shortcomings in the growing qualities of a piece of land, such as a short growing season or poor light levels, greenhouses are often used for growing flowers, vegetables, fruits, transplants and seedlings. Greenhouses can be divided into glass greenhouses and plastic greenhouses. Plastics mostly used are polyethylene film and multiwall sheets of polycarbonate material, or PMMA acrylic glass. Commercial Glass Greenhouse are often high-tech production facilities for vegetables or flowers. The glass greenhouse are filled with equipment such as screening installations, heating, cooling and lighting, and may be automatically controlled by a computer.
Complete Greenhouse
Agriculture Greenhouse,Plastic Film Greenhouse,Glass Greenhouse,Pc Board Greenhouse
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com