Corn virus disease prevention and control technology
Maize virus disease is a common disease in corn. The types of diseases that occur in our city include three types: corn dwarf mosaic virus disease, corn streaked dwarf disease and corn rough dwarf disease. Most of the corn fields are dominated by dwarf mosaic disease. Maize virus disease is transmitted by locusts and sloughs. Under natural conditions, maggots mainly transmit viruses in a non-persistent manner. The disease can be felt during the whole growth period of corn, especially in the seedling stage, and it can be shown in the corn three-leaf stage. The plants showed yellow, weak, small, and slow growth after they became sick. The height of diseased plants was often less than one-half that of healthy plants. In order to ensure the normal growth of corn in our city, it is recommended that the general public increase their vigilance, prepare for advances, actively prevent the summer maize virus disease, control the epidemic of corn virus disease, and ensure the high yield of corn. Specific prevention measures: 1. Agricultural control (1) Reasonable selection of disease-resistant and disease-resistant hybrids and cultivation of disease-resistant varieties are the fundamental ways of preventing and treating corn virus disease. (2) Adjusting the sowing date of corn The sowing of spring corn before April 20th ended, and the summer corn was postponed till about 10 days after the wheat was harvested. The peak period of the activity of insecticides and the susceptible growth period of corn were avoided. (3) Improve cultivation techniques and strengthen field management The combination of early and indeterminate seedlings, the removal of diseased plants brought out of the park by burnout or deep burial, the eradication of poison sources, and the reduction of reinfestation can effectively control the epidemic of the disease. Cultivation should be applied to the base fertilizer, reasonable fertilizer, timely cultivator weeding. 2, chemical control: (1) Prevention and control of diseases at the seedling stage: after emergence of corn, 1000 times of 20% imidacloprid wettable powder is used before 6 leaf stage or 2000 times of 3% acetamiprid is used to control aphids in corn fields and nearby weeds. Laodelphax can prevent diseases. (2) Spraying of anti-viral agents for protection of diseased fields. In lightly affected fields, after the removal of the diseased plants, on the basis of the prevention and control of aphids and Laodelphax striatellus, it can be sprayed with Fengzhuang Le 700 Solution, 20% Virus A, or Phytophicillin 1000 times foliar spray. Spray once every 5-7 days, continuous control 2-3 times, can reduce the severity of the disease. Mechanic Gloves,Machine,Mechanic HOLIK ASIA GROUP CO.LTD , https://www.holikasia.com