Relationship of Adult European Corn Borer (Lepidoptera: Pyralidae) in Action Sites with Egg Masses in the Cornfield
作者:
Mary E. Derrick,
William B. Showers,
期刊:
Environmental Entomology
(OUP Available online 1990)
卷期:
Volume 19,
issue 4
页码: 1081-1085
ISSN:0046-225X
年代: 1990
DOI:10.1093/ee/19.4.1081
出版商: Oxford University Press
关键词: Insecta;Ostrinia nubilalis;action site;flush bar technique;adult sampling
数据来源: OUP
摘要:
A relative sampling method for second flight adult European corn borer,Ostrinia nubilalis(Hübner), was used to predict egg mass levels within hybrid seed cornfields (Zea maysL.). An aluminum bar (1 m) was swept through adult aggregation areas of giant and green foxtail grass (Setariaspp.) and adults were counted as they flushed from the grass. Numbers of scouted egg masses in the field were regressed onto numbers of flushed adults during early to late silking stages of corn. Egg masses were dependent on the number of European corn borer adults in aggregation areas (example: predicted 0.5 egg masses per corn plant with an average of 52 moths flushed from 10 m2grass at 5% silking or an average of 66 moths flushed from 10 m2grass at 80% silking). This relationship between flushed adults and egg masses can be used to determine the need and timing of field scouting by consultants or seed companies for second-generation egg masses in the Corn Belt.
点击下载:
PDF
(366KB)
返 回