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Spring corn meal control
The spring corn is a Homoptera or Polygonaceae family, and is mainly harmful to corn, sorghum, wheat, millet and other crops. During the seedling stage, the locusts clustered on the back of the leaves and the leaves damaged. Light causes poor corn growth. When severely damaged, plant growth stagnates and even dead seedlings. In addition, corn dwarf mosaic virus disease can also be transmitted, resulting in varying degrees of reduced production. The specific prevention and control, first, we must pay attention to when the maize seedling grass black spider, ladybugs, fly, grasshoppers, grasshoppers, a large number of cases, try to avoid pesticide control or use of pesticides harmless to natural enemies. The second is to control before the locusts bloom: 1, spray. Use 40 dimethoate EC or 80% dichlorvos EC 1500-2000 times fluid; or BT emulsion 200 mL per 667 square meters, add water 30 kg; or 25% diflubenzuron 3x suspension 1000 times; or 50% anti-spasmodic Wettable powder 3000-5000 times liquid. 2, the root zone application. With 30% carbazole granules, 10-15 kg per 667 square meters of mixed soil, grasp the initial stage of corn mash, buried in the planting around the root zone of the plant, the efficacy of up to 30 days.