How to control corn borer?
How to control corn borer? Please introduce the methods of corn borer control with reference to the following methods: corn borer can be controlled with reference to the following methods: fields with a mosaic rate of 10% are generally treated at the end of the heart leaf; those with a mosaic rate of less than 10% can be treated as appropriate; those with a mosaic rate of more than 20% or 100 eggs with more than 30 pieces shall be controlled once in the middle and end of the heart leaf, respectively. Generally, 1.5% phoxim granules or 0.4% dichlorfon granules are put into the heart leaves, or 50 grams of 90% crystal trichlorfon or 50% dichlorvos EC per mu, and 40 kilograms of water are added to the heart. Control of corn borer at corn ear stage: fields with 10% ear rate or 50 heads of 100-ear filaments shall be used for control in the peak silking period; if the ear rate is more than 30%, the drug shall be used again 6-8 days after the peak period. The medicament can choose any of the above medicament and sprinkle it in the axils of corn filaments and two upper and lower leaves. Cut off the seriously harmful filaments, apply a layer of medicine mud on the top of the ear, dissolve it with 90% crystal trichlorfon, 50 grams of water and 15 kilograms of water, and add 27 kilograms of clay to make mud. Click to get more pesticide application techniques
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When is the best control effect of corn borer?
When is the best control effect of corn borer? Please give guidance that corn is vulnerable to pests from emergence to maturity. In order to obtain high quality and high yield of corn, it is very important to control pests reasonably. In particular, the harm to corn borer should not be taken lightly. Corn borer, also known as drillworm, is more common on corn.
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What are the reasons for the occurrence of corn borer?
What are the reasons for the occurrence of corn borer? Please introduce the reasons for the occurrence of corn borer as follows: (1) population base: the population base of the previous generation is an important factor affecting the severity of corn borer damage. The number of insect population is large, which often causes serious damage under suitable environmental conditions. ...
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