What is the corn armyworm and how to control it?

What is the corn armyworm, what harm does the corn armyworm have? How to prevent and cure it? Ask netizens to help introduce and control methods the harm and control methods of corn armyworm have been sorted out by the farming network, which are listed below for netizens' reference. The harm of corn armyworm: the corn armyworm feeds on larvae. Food is very miscellaneous, especially like to eat Gramineae plants. Bite the leaf tissue, form a lack of engraving, major occurrence often eat all the leaves, leaving only the bare rod, the extracted wheat ear, corn ear can also be bitten off. It does great harm to the yield of corn. The occurrence conditions of corn armyworm: the armyworm likes warm and humid conditions. When there is more rainfall from late May to June during the migration period of the first generation armyworm, the second generation armyworm will occur greatly. High temperature and low humidity are not conducive to the growth and development of armyworm. Armyworm is a long-distance migratory pest. Control methods of corn armyworm: first, during winter wheat harvest, in order to prevent larvae from migrating to autumn fields, 2.5% trichlorfon powder was sprinkled into a 4-inch wide medicine band around the corn field adjacent to the wheat field. Before the 3rd instar of the larvae, the corn field was sprayed with 20% permethrin EC 15ml / mu and 50kg water, or sprayed with 5% methotrexate 1500 times, 40% omethoate 1500 times or 10% great heroes 2000 times. Methods in the period of young larvae, the efficacy of 200PPM against armyworm larvae was more than 94.5%, and it did not kill natural enemies, it was safe to crops, and the small dosage did not pollute the environment. Click to get more Pesticide Application techniques click to get more Pesticide Application techniques Click to get more Maize planting techniques