Modeling Lygus hesperus Injury to Cotton Yields

$28.00 plus tax (Refund Policy)

Buy Article:

Abstract:

A model of the impact of a lygus, Lygus hesperus (Knight), population on cotton square development and subsequent impact on boll development is proposed. The model is specified as a multistage production process and parameters are estimated using data collected in Kern County, Calif. in 1974. Lygus cause significant injury to cotton during two disjoint periods. The first period occurs during the early squaring stage of the plant when squares are forming at a rate of ca. 100% a week. The second period occurs when the cumulative number of squares per unit area has peaked. The ultimate impact of lygus on cotton yields depends heavily on plants bearing fruit in the early period. Results of computations indicate that lygus can significantly injure the cotton yield in fields with subaverage square loads during the early period. The model can be used to determine economically optimal spraying strategies.

Document Type: Research Article

Publication date: October 1, 1985

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
  • Editorial Board
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Visit this journal's homepage
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more