What is ginseng blight?

What is ginseng blight? How to prevent and cure ginseng blight? Also ask the netizens who know to help introduce the harm and prevention methods of ginseng blight in the farming network, which are listed in detail below for netizens' reference. The harm of ginseng blight: the disease directly infects ginseng root with hyphae, or forms a large number of zoosporangia and spreads to the aboveground parts to infect stems and leaves. Epidemic diseases are mainly spread by wind, rain and farming operations. During the growth period of ginseng, the blight can be re-infected many times. Ginseng blight generally began to occur in June, and the peak period was from mid-July to mid-August. When the temperature is more than 20 ℃ and the soil moisture is more than 50%, the epidemic disease will occur greatly. The ginseng bed is not well ventilated and transparent, the soil is hardened, there is too much nitrogen fertilizer, and the density is too high, which are mostly conducive to the occurrence and epidemic of the disease. The prevention and control methods of ginseng epidemic disease: method one, timely drainage, ventilation and light transmission of ginseng garden. Method 2. Keep the proper density of ginseng, remove weeds in time, and reduce the temperature and humidity of ginseng loose soil properly. Method 3. If diseased plants are found, the diseased plants should be eliminated in time, the diseased plants should be removed from the bed and burned, and the diseased points should be closed and sterilized with 45% Dysenamine or 20% copper acetate. Completely get rid of the sick and disabled in autumn. And do a soil disinfection. Method 4. The occurrence and harm of the epidemic disease is serious, it is not easy to prevent and cure, and must be prevented in advance. The control agents were sprayed for 3 times for 5 times. 72.2% aldicarb hydrochloric acid salt solution, 46% copper hydroxide water dispersible granule 1500 times liquid, 25% metalaxyl hydrochloric acid wet powder 600x liquid, 40% Wang copper cream urea cyanide wettable powder 120g / mu 160g, 50% enoylmorpholine water dispersible granule 100000g / mu, etc. Ginseng seed sprouting method Ginseng Seedling method Click to get more Ginseng planting techniques Click to get more Medicinal Materials planting techniques