Corn borer disease introduction and induction measures
Since July, the temperature has risen, and the climate is conducive to the occurrence and damage of corn borer and other insect pests. The corn borer is hiding the corn young leaves with young larvae at the first instar, leaf-shaped pinhole mosaics, and after the third instar foraging to form rows of holes, the larvae drill Into the corn, the new leafhopper eats leaf, leaving only the epidermis, the damaged corn grows weak, and the ear develops poorly, which affects the corn's food intake and yield.
Specific corn borer control measures are as follows:
The appropriate period of control is before the third instar. 48% of chlorpyrifos (chlorpyrifos) emulsifiable concentrate 1000-1500 times spray control can be used per acre, or 3% phoxim 3 to 4 kg granules can be thrown away.
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