Chinese yam planting technology: what is Chinese yam anthracnose?

What is Chinese yam anthracnose? What harm does anthrax do to yam? What method can prevent and cure Chinese yam anthracnose? Please introduce the harm of anthrax to yam: at the initial stage of the disease, slightly sunken brown spots are produced on the veins, which continue to expand into dark-brown spots, with irregular wheels in the middle and small black spots on them, that is, the conidium disk of the pathogen. The base of the stem was killed, dark brown watery spots appeared, and slightly sunken in the later stage, resulting in withered stems and fallen leaves. The pathogenic factors of Chinese yam anthracnose: in June, the conidia spread by wind and rain, and the damage was extended until the yam harvest. When the temperature is 25-30 ℃ and the relative humidity is 80%, the disease is serious. Methods for prevention and control of anthracnose in Chinese yam: method 1: after yam harvest, clean the fields, sweep the residual leaves of diseased plants, and concentrate on burning or retting fertilizer; method 2: before planting, the seedlings are soaked in Bordeaux solution (1 ∶ 1 ∶ 150) for 10 minutes and disinfected for 15 minutes, so as to reduce the bacteria carried by the seedlings. Method 3: at the initial stage of the disease, remove the diseased leaves and spray 30% Teflin wettable powder 1500-2000 times, or 80% Dysen zinc wettable powder 500-600 times, once every 7 days, 2 times continuously. Click to get more yam planting techniques click to get more vegetable planting techniques