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This article in CS

  1. Vol. 9 No. 6, p. 744-746
     
    Received: Apr 25, 1969


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doi:10.2135/cropsci1969.0011183X000900060021x

Reaction of Kentucky Bluegrass Strains to Feeding by the Sod Webwor1

  1. R. C. Buckner2,
  2. B. C. Pass3,
  3. P. B. Burrus2 and
  4. J. R. Todd3

Abstract

Abstract

A Kentucky-grown common lot of Kentucky bluegrass (Poa pratensis L.) was more resistant to sod webworm (Crambus spp.) injury than cultivar and common lots frcm Demnark and Holland. Certain selected strains had either consistently greater resistance or greater susceptibility to injury than Kentucky-grown common, indicating that sources of resistance exist that may be used in developing cultivars with resistance to sod webworm injury.

Feeding trials, total sugar, and silica content of the foliage failed to reveal the nature of resistance to sod webworm. Resistant strains had heavier weights of rhizomes during May than suspectible strains. This indicated the possibility of a relationship between stored food reserves prior to the stress period and resistance to sod webworm injury during the summer.

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