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Abstract

 

This article in CS

  1. Vol. 7 No. 3, p. 239-240
     
    Received: Oct 17, 1966


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doi:10.2135/cropsci1967.0011183X000700030021x

Yield Reductions in Reed Canarygrass Caused by Frit Fly Infestation1

  1. Dale D. Wolf2

Abstract

Abstract

Yields of reed canarygrass were reduced 0.52 metric ton per hectare in second harvest due to frit fly infestation. Plant height and weight of individual tillers were reduced by as much as one-half by infestation. Insect control resulted in aftermath yield increases of 32% in low nitrogen plots and 17% in high nitrogen plots. Infestation interrupted normal morphological and physiological development. It is proposed that residue left by the feeding larvae may influence forage acceptability of grazing animals.

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