If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Economic Injury Level, Action Threshold, and a Yield-loss Model for the Pea Aphid, Acyrthosiphon pisum (Homoptera: Aphididae), on Green Peas, Pisum sativum

$28.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Economic injury level, action threshold, and population development studies with the pea aphid (PA), Acyrthosiphon pisum (Harris), were conducted during 1983–85. Pea aphid densities, simulating those in commercial pea fields, were established using insecticides to manipulate infestation levels. Three experiments, incorporating 12 treatments and six replications, were analyzed. A generalized, nonlinear equation relating pea yield to accumulated aphid feeding days (AFD) is described. The model approximates two phases of a sigmoid infestation-yield curve. An upper maximum plateau and a region of rapidly decreasing yield are approximated. Beyond 1,800 AFD, a lower minimum yield plateau is hypothesized. Economic injury levels calculated for the 3 years’ experiments using the generalized model were 22.2, 18.2, and 12.2 AFD, respectively. Action threshold estimates were determined from linear regression estimates of yield versus aphids per plant at bloom. Action thresholds were 3.6, 0.3, and 0.3 aphids per plant for the years 1983, 1984, and 1985, respectively. The pea quality components, tenderometer (TD) and sieve size, were altered by maximum PA densities. High AFD levels increased TD and decreased sieve size significantly when compared with aphid-free controls. Protein content of green peas was not significantly altered by PA feeding.

Document Type: Research Article

Publication date: December 1, 1986

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