Pepper planting technology: how to do pepper wilt and bacterial wilt?

How did Fusarium wilt and bacterial wilt occur in chili? Please introduce and guide the prevention and control of Fusarium wilt of pepper: it is one of the main diseases of pepper. In the early stage of the disease, a large number of lower leaves fell off, and water-stained rot appeared in the basal cortex of the stem near the surface. Sometimes the disease occurs only on one side of the plant, forming longitudinal striped necrosis, the aboveground stems and leaves rapidly lose water and necrosis, and finally the whole plant dies. The root system of the diseased plant is also water-soaked rot like the base of the stem, the cortex is easy to peel off, the Lignification part of the root system becomes dark brown, and white mildew grows in the affected part under wet conditions. The control methods of Fusarium wilt of pepper are as follows: 1. Strengthen field management. Cultivate Thai strong seedlings, high border cultivation, prevent flooding, do not continuous cropping, choose sandy loam soil to grow pepper. 2. Chemical control. At the initial stage of the disease, 50% carbendazim wettable powder was sprayed 500 times, or 40% polysulfide suspension 600 times, or 14% ammonia copper solution 300 times, with an average of 250 grams per hole, 2 times continuously for 3 times depending on the occurrence of the disease. Pepper bacterial wilt: the main damage is branches and leaves. First of all, the diseased branches and leaves wilted, gradually extended to the whole plant, the color of the whole plant turned pale, and finally the leaves turned brown. The most prominent feature is that the appearance of the stem of the diseased plant is not obvious, and the vascular bundle turns brown when dissecting the diseased plant, and milky mucus overflow can be seen in the vascular bundle during the section moisturizing culture, which is different from Fusarium wilt. Pepper bacterial wilt control methods: 1, agricultural control: according to local conditions, select disease-resistant varieties, adjust soil pH, combined with soil preparation, sprinkle appropriate amount of lime, generally apply 50 kilograms of lime per mu, so that the soil PH value is slightly alkaline and inhibit the growth of bacteria. Increase the application of phosphorus and potassium fertilizer and spray 100 mg / kg boric acid solution to promote vascular bundle growth and enhance disease resistance. Pay attention to drainage after rain, check in time, remove and burn the diseased plant immediately, and disinfect the diseased plant hole with lime. 2. Chemical prevention and treatment: at the initial stage of the disease, 100,200mg / kg streptomycin sulfate can be used, or 30%BT wettable powder 500x liquid, or 77% wettable particulate powder 500x liquid, or 14% complex ammonia copper solution 300x liquid, sprayed once every 7cm 10 days, continuous prevention and control 3 times, the effect is better. Click to get more chili planting techniques click to get more vegetable planting techniques