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

Effect of Potato Leafhopper 1 Injury on Yield and Quality of Resistant and Susceptible Alfalfa Clones2,3

$28.00 plus tax (Refund Policy)

Buy Article:


Twelve alfalfa clones representing a broad range of resistance to the yellowing caused byEmpoasca fatback (Harris), were evaluated to determine the interrelationship between resistance to yellowing and changes in the yield and in the quality of forage. Some clones had high levels of resistance to yellowing despite large populations of leafhoppers, but when infestations were moderate to heavy, all clones had substantially reduced total growth, yield of forage, and quantity of such important qualitative components as carotene and protein. The changes in yield and quality of individual clones compared with uninfested counterparts were generally less for resistant than for susceptible clones. Digestible dry matter (dry matter disappearance) was affected little by potato leafhoppers, but none of the clones had measurable resistance to stunting. Infested plants consistently had much higher dry-matter content than uninfested plants, which tends to negate estimates of yield based on plant length and green weight.

Document Type: Research Article

Publication date: December 1, 1973

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



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
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