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Prevention and cure method of radish diseases and pests
Radish diseases are mainly viral diseases and black rot. Virus disease has so far no specific agents, the main approach is to cure warts and prevent high temperature and drought. Black rot is a disease caused by black rot fungi. The main symptoms are darkening of the center of the roots and black rot of the vascular bundles of the fleshy roots. The bacteria passed winters on the seeds and diseased plants and was transmitted by rainwater insects. Disease-resistant varieties should be selected, generally light green radish, white radish weight, can also be used for 50 minutes soaked in warm soup for 20 minutes, or Fumei double l00 times liquid soaking for 2 hours, can be sprayed with 800 times liquid Daisen ammonium and so on. In addition, there are soft rot, downy mildew, white spot disease, etc., mainly through the selection of disease-resistant varieties, deep sorghum sorghum, water control and pest control and other comprehensive measures. In addition to the pests, there are yellow striped hops, small ground tigers, cabbage worms (white cabbage larvae), and borers (vegetative larvae). Yellow stripe beetle adults can be controlled by 90% trichlorfon loo dosing, larvae can be used after the irrigation with the above liquid irrigation. Small tigers can be used 20% chlorfenuron emulsion 8000 times spray, but also trapping grass piles, the leaves will be broken, sprayed with 90% crystal trichlorfon 400 to 500 times liquid, scattered in the evening next to the roots, Insecticide works well.