Beans field cotton bollworm

Scientific name Helicoverpa armigera (Hubner) Synonyms Heliothis armigera (Hubner) Lepidoptera, Noctuidae. Distribution of the national soybean production area.

Damage characteristics The bollworm has risen as the main leaf-feeding pest in Shandong soybean field, and the damage has been increasing year by year, and there has been a tendency to spread. In Lubei, Shandong, soybeans were affected by the second and third generations of cotton bollworms, and the second generation was seriously affected. Summer soybeans are seriously affected by the three generations. The larvae eat the young larvae before feeding leaves. In the investigation of 71 soybean fields, 86% of bollworms occurred, and the maximum number of insects per m2 was 31, and there were 80 insects in one hundred strains. Before 3rd instar 6.4 days, the total food intake was 4.1%, and the maximum food intake was 6 instars, totaling 14.4 days, accounting for 73.1% of the total food intake.

Morphological characteristics, living habits, and control methods can be found in cotton pests, cotton bollworms.

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