What kind of pest is the corn armyworm? Detailed explanation of control methods
What is the corn armyworm, what damage does the corn armyworm cause, and how do you control it? Readers asked for help with an introduction and control methods. Zhongdi Web has compiled the damage caused by the corn armyworm and its control methods, listed below for readers' reference. Damage caused by the corn armyworm: the corn armyworm feeds as a larva. Its feeding habits are very diverse...
What is the corn armyworm,what damage does the corn armyworm cause?How do you control it? Readers, please help with an introduction and control methods.Zhongdi Web has compiled the damage caused by the corn armyworm and its control methods, listed below for readers' reference.
Damage caused by the corn armyworm:
The corn armyworm feeds as a larva. Its feeding habits are very diverse, and it especially likes to eat grass-family plants. It bites and eats leaf tissue, forming notches, and during major outbreaks it often eats all the leaves, leaving only bare stalks; the emerging wheat heads and corn ears can also be bitten off. It causes enormous damage to corn yield.
Conditions for the corn armyworm to occur:
The armyworm likes warm, high-humidity conditions. When rainfall is on the heavy side from late May to June during the immigration period of the 1st generation armyworm, the 2nd generation armyworm will break out in large numbers. High temperature and low humidity are not good for the growth and development of the armyworm. The armyworm is a long-distance migratory pest.
Control methods for the corn armyworm:
Method one,When winter wheat is harvested, to prevent the larvae from migrating to autumn fields and causing damage, use 2.5% trichlorfon powder around the corn fields adjacent to the wheat fields, spreading it into a 4 cun wide chemical belt to block them; in corn fields before the larvae reach the 3rd instar, use 20% fenvalerate EC 15-45 g/mu, mixed with 50 kg of water for spraying, or use 5% fenpropathrin 1000-1500 times solution, 40% omethoate 1500-2000 times solution, or 10% Dagger 2000-2500 times solution for spray control.
Method two,During the young larval stage, using diflubenzuron No. 1-3 at 200 PPM to control armyworm larvae has an efficacy of more than 94.5%, and it does not kill natural enemies, is safe for crops, requires a small amount and does not pollute the environment.
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