Interaction of Insects and Weeds in a Snap Bean Agroecosystem

摘要: Integrated weed management strategies maintain sub-threshold levels of weeds. The remaining weeds may impact the feeding and habitation patterns both potato leaf- hoppers bean leaf beetles in a snap agroecosystem. objective our study was to determine effect interference between beans (Phaseolus vulgaris L.) either redroot pigweed (Amaranthus retroflexus or large crabgrass (Digitaria sanguinalis on populations leafhopper (Empoasca fabae (Harris)) beetle (Cerotoma trifurcata (Forster)). Plots were seeded with at same time as planting (early) when had one trifoliate open (late). density averaged two plants per meter row. Bean populations, pod damage, defoliation lower weed-free plots compared those early emerging crabgrass. Leafhopper nymphs adults 31% 34% less com- pared plots. Thus, densities insect pests varied depending species should be considered deciding integrate approaches.