Action Thresholds for Potato Leafhopper on Potatoes in Minnesota
Authors: Cancelado, Rafael E.; Radcliffe, Edward B.
Source: Journal of Economic Entomology, Volume 72, Number 4, August 1979 , pp. 566-569(4)
Publisher: Entomological Society of America
Abstract:The appropriate action threshold for application of insecticidal sprays to control potato leafhopper, Empoasca fabae (Harris), on potatoes, Solanum tuberosum (L.), appeared to be ca. 10 nymphs/105 leaves. Applying treatments only when leafhopper populations reached 30 or more nymphs/105 leaves resulted in hopperburn and yield reductions. Treating for 10 or fewer nymphs/105 leaves necessitated additional spray applications of minimal incremental value in crop protection, but which can trigger outbreaks of green peach aphid, Myzus persicae (Sulzer). Only 2 spray applications were required when insecticidal applications were timed to coincide with peak nymphal populations in mid-July and mid-Aug. For these studies, essentially single species infestations of potato leafhopper were obtained by inter planting the potatoes with alfalfa strips.
Document Type: Research Article
Publication date: 1979-08-01
- 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.
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