Symptoms: The main and lateral roots become black, root nodules and root hairs are significantly reduced, and light plants cause dwarfing. Fine stems, small leaves, and pale leaves, some branches are wilting, although flowering and scarring can occur, the number of pods is drastically reduced. Grains of pods; the basal part of the culm is browned, the cortex of the disease rots, and the plants die a great deal, causing the field to turn brown. The symptoms of different pathogens infecting individually were as follows: Fusarium solani was early and severe, and it mainly invaded the base of the stem and the seed node, forming a dark, rot-like rot, with dark brown roots and decayed cortex. The root rot fungi mainly invade the base of the roots or stems, forming brownish watery lesions or watery overall soft rot. The incidence of Fusarium oxysporum is relatively late and light, mainly infecting roots and stem vascular bundles, making it become red or brown. The strain of Leuconostoc® mainly infects the main and lateral roots, resulting in blackening of the whole root system. Rhizoctonia solani mainly invades the base of the stem and forms a brown depression, resulting in contracture or rupture near the surface. Control methods: (1) Strengthen field management. Prevent the accumulation of water after the rain. Draught and drought irrigation horse water, do not flood irrigation. Apply adequately cooked organic fertilizer, appropriate application of phosphorus and potassium fertilizers, increase plant resistance to disease. (2) Selection of disease-resistant varieties. (3) More than 3 years of rotation with cruciferous vegetables or onions and garlic. (4) Dressing with 25% triadimefon (triadimefol) EC with a seed weight of 0.25%, or dressing with 75% chlorothalonil wettable powder with a seed weight of 0.2%. (5) In the early stage of disease, 77% of the WP can be used to kill 500 times, 0.5% of the aminooligosaccharide is 400 to 600 times liquid, and 66% of the enemy is more than 500 to 600 times liquid, 23 % of collateral copper (Chococcus) 0.2-0.25 g/plant, 25.9% of collaterals zinc, lemon, copper (anti-dry) 500 to 600 times, 70% of Chloromycorin (soil-contaminated) wettable liquid 3000 ~ 4000 times liquid 20% methyl-rhodium phosphate emulsifiable concentrate (a clear) 150 ~ 220 g / acre, doubly irrigated root, each strain of irrigating solution 100 ml, once every 10 days, 2 or 3 times in a row. Yellow Wine Without Caramel Colour Yellow Rice Wine,Jia Fan Wine,Shaoxingtian Chun Wine,Yellow Wine Without Caramel Colour ZHEJIANGGUYUELONGSHAN SHAOXING WINE CO.,LTD. , https://www.chinashaoxingwine.com
Pea root rot disease prevention and control method
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