© 2016 Jadam All Rights Reserved Cotton bollworm adult |
Cotton bollworm
Lepidoptera Noctuidae
О Scientific name : Helicoverpa armigera (Hubner)
О English name : cotton bollworm
О Size : the length of adult's wings are 35mm
О Host : chili, eggplant, tomato, tangerine, Barberton daisy, calendula, perilla, peanut, Chinese cabbage, lettuce, baby's breath, cucumber, carnation, bean, millet and more.
О Distribution : Korea, Japan, Taiwan, China, the far east part of Russia, Pakistan, Nepal, the north part of India, and more.
© 2016 Jadam All Rights Reserved cotton bollworm larva |
© 2016 Jadam All Rights Reserved cotton bollworm larva |
© 2016 Jadam All Rights Reserved cotton bollworm larva (the damaged chili) |
Their number of households is 2 to 3 a year. They stay under the ground as a pupa. It comes out during May to June and damage crops until October (annual occurrence in the greenhouse). Moreover, they spawn one egg on a leaf sporadically. However, sometimes they spawn 5 to 10 together. They can spawn less than 500. From scattering period to the incubation period is around 3 to 4 days at room temperature. It takes 17 to 20 days until it hatches out. Moreover, the cotton bollworm adult's lifespan is 10 to 12 days.
© 2016 Jadam All Rights Reserved damaged tomato by cotton bollworm |
Translated by Sunyoung Cho
Other articles by Deogkee ParkInterviewed on : 2016.10.01 01:45
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#Lepidoptera#Noctuidae#vegetable pest#Gramineous pest##Helicoverpa armigera