Abstract
In 1968 and 1969 Field tests were conducted in an attempt to establish the economic threshold level of Plathypena scabra (F.) on lima beans. Allowing for test and certain natural mortality, the addition of up to 4 larvae per plant per week had no significant effect on yields in either early- or late-planted lima beans. In addition, artificial small-pod removal had no significant effect on yields except in 1 test where 25% of these pods were routinely removed. The general equilibrium position of this species for the years 1964 through 1969 was 9 larvae per sample or 0.05 larvae per plant. It seems unlikely in any given year that the green cloverworm can significantly lower lima bean yields in this region.
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