Abstract

Five dominant spider families were found on Virginia soybeans, two on the ground (Lycosidae and Linyphiidae) and three on the foliage (Oxyopidae, Thomisidae, and Salticidae). Total foliage-dwelling spiders peaked in early August and again in early September 1981, and in early to mid-August in 1982. Ground spiders peaked in June with the greatest abundance of Lycosidae. While higher spider populations were collected from foliage in soybeans double-cropped after barley harvest and in full-season soybeans that were drill-planted, the ground spiders were more numerous in both barley- and wheatsoybean double-cropped systems. Over 25,000 spider specimens from 17 different families were observed in soybean ecosystems during this 2-year study.

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