Aphid Populations on Field Beans in Washington1

Publisher Website
Google Scholar
Abstract
Aphid surveys, were made in dry bean fields at Prosser, Wash., during the summers of 1954, 1955, and 1956. Seventeen species of aphids were added to the list of known species of the Yakima Valley. Yellow water-filled trap pan collections averaged over 90% Myzus persicae (Sulzer) with population peaks at the end of July in 1955, in mid July in 1956. Collections of aphids from bean foliage showed higher proportions of Macrosiphum granarium (Kirby) and Macrosiphum pisi (Harris) and lower proportions of Myzus persicae than were found in the trap collections. More M. persicae alatae were found on the foliage of Red Mexican U. I. 34 beans than on the foliage of four other bean varieties. Aphids were unable to colonize on beans and usually only alate viviparae and some young nymphs were found on the foliage, apparently because the aphids are caught by the hooked hairs on the bean leaves and live only a short while.

This publication has 2 references indexed in Scilit: