To guard against greenhouse pepper scab in winter
Recently, some growers have noticed that the hot pepper leaves in the greenhouse are very serious, and some flowers and fruits are also falling off.
The etiology of the disease should be caused by pepper scab (bacterial speck disease), which often occurs on peppers grown in greenhouses in winter.
When the seedlings develop, water-stained silver-white spots on the cotyledons gradually turn into pale black depression spots; the adult stage disease leaves are initially spotted with water-stained yellow-green spots, which are irregularly shaped and dark brown on the edges. Slightly raised, the middle color is light, slightly concave, rough surface, like a sore.
Pathogens and routes of transmission The disease is caused by bacteria of the genus Xanthomonas. The pathogens can attach to the seed surface and become a source of long-distance infection, and they can also overwinter in the soil with the diseased body. The spread of propagation in the field depends mainly on irrigation water and agricultural operations. The bacteria can only infect from wounds and orifices. After the onset of the disease, the disease department overflowed with pyogenic bacteria and could spread and spread repeatedly.
Control methods can be controlled by the following agents: 1:1:200-fold Bordeaux mixture, streptomycin or neophytin 4000 times, 60% dimethyl dimethoate aluminum (DTM) WP 500 times, 77% can kill (Copper hydroxide) 400 to 500 times wettable powder spray. One or more of the above agents, alternating medication, spray once every 7 to 10 days, depending on the condition and then spray 2 to 3 times.
Special attention: diseased plants, diseased leaves, and diseased fruits must be promptly collected and brought to the field for centralized destruction.
The weather reminds that in the coming week, mid-to-southern China, Huanghuai, and other places will experience moderate to severe embarrassment, which will affect the sunlight in greenhouses and adversely affect crop growth within the shed. Precipitation in southern and southern China will be higher than normal year-on-year, which will lead to wet spot in low-lying farmland, and adverse to crop growth in the area.
Corn are the expression of some anthocyanins produced by the photosynthesis of grains. Different anthocyanins cause different colors.
There are some benefits of corn: 1. Corn can lower sugar;2. The high content of unsaturated fatty acids in maize is beneficial in preventing atherosclerosis, coronary heart disease, myocardial infarction and other diseases; 3. Corn whiskers have diuretic and hypotensive effects, lowering sugar.
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