Alfalfa weevil (Coleoptera: Curculionidae) larval sampling: comparison of shake-bucket and sweep-net methods and effect of training.

Abstract

Two field-sampling methods, shake-bucket and sweep-net, were compared for use in monitoring alfalfa weevil, Hypera postica (Gyllenhal), larvae in alfalfa hay of the high plains and intermountain region of North America. In this region, alfalfa grows to sufficient height to use both methods before the more damaging late instars peak in abundance. Both… (More)

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