- Author: Eric T. Natwick
Published on: July 16, 2013
Growers in the Imperial Valley, CA increasingly planted alfalfa during the 1980’s in heavier soils on raised beds as the field became more available due to diminishing cotton acreage. Growing alfalfa on raised beds with furrow irrigation helped growers to better manage alfalfa planted in heavier soils. Furrow irrigation of alfalfa on raised beds also provided ideal conditions for survival of cutworms, creating chronic cutworm pest problem by mid- to late-1980’s persisting until today. In this low desert alfalfa, the granulate cutworm, Agrotis subterranea (Fabricius) became predominant cutworm replacing the variegated cutworm, Peridroma sausia (Hübner). The increase in cutworm moth activity also caused...
Tags: cutworm (1)
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