Influence of buffalograss management practices on western chinch bug and its beneficial arthropods

Jeffrey Carstens, Tiffany Heng-Moss, Frederick Baxendale, Roch Gaussoin, Kevin Frank, Linda Young

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

A 2-yr study was conducted to document the influence of selected buffalograss, Buchloë dactyloides (Nuttall) Engelmann, management practices (three mowing heights and five nitrogen levels) on the seasonal abundance of the western chinch bug, Blissus occiduus Barber (Heteroptera: Lygaeidae), and its beneficial arthropods. Vacuum, pitfall, and sticky traps samples were collected every 14 d from the middle of May through October from western chinch bug-resistant ('Prestige') and -susceptible ('378') buffalograss management plots. In total, 27,374 and 108,908 western chinch bugs were collected in vacuum and pitfall traps, respectively. More than 78% of all western chinch bugs were collected from the highly susceptible buffalograss 378. Significantly more bigeyed bugs (Geocoridae: Geocoris spp.) were collected from the 378 buffalograsss management plots than the Prestige plots. In contrast, buffalograss cultivar had little influence on the abundance of other beneficial arthropods collected. Statistically, western chinch bugs were least abundant at the lowest mowing height (2.5 cm) and increased in abundance with increasing fertility. Numerically, however, differences among management levels on western chinch bug abundance were minimal. Numerous beneficial arthropods were collected from buffalograss management plots, including spiders, predatory ants, ground beetles (Carabidae), rove beetles (Staphylinidae), bigeyed bugs, and several species of hymenopterous parasitoids. In general, beneficial arthropods were essentially unaffected by either mowing height or nitrogen level. Scelionid wasps represented 66.3% of the total parasitoids collected. The total number of scelionid wasps collected among the three mowing heights and five nitrogen levels were approximately equal.

Original languageEnglish (US)
Pages (from-to)136-147
Number of pages12
JournalJournal of economic entomology
Volume100
Issue number1
DOIs
StatePublished - Feb 2007

Keywords

  • Beneficial arthropods
  • Blissus occiduus
  • Buffalograss
  • Sampling
  • Western chinch bugs

ASJC Scopus subject areas

  • Ecology
  • Insect Science

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