Susceptibility of Zoysiagrasses to the Fall Armyworm (Lepidoptera: Noctuidae)

S. Nair, S. K. Braman, P. Raymer

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Growth and developmental parameters of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), were evaluated on 41 new zoysiagrass taxa (Zoysia spp. Willd.), which belong to an increasingly popular group of warm-season turfgrasses, in comparison with 5 commercially available zoysiagrass taxa and 1 known susceptible Paspalum L.Taxon. Results from two no-choice growth chamber trials indicated that the new Zoysia japonica Steud.Taxa were unfavorable for the development of fall armyworm larvae in general compared with the susceptible Paspalum taxon. This was evidenced by significantly lower larval and pupal weights and survival and longer time to pupation and adult emergence, pointing to antibiosis in these zoysiagrass taxa. The new Zoysia matrella (L.) Merr., Zoysia macrostachya Franch. & Sav., and Zoysia sinica Hance taxa seemed more favorable than Z. japonica taxa, as evidenced by numerically higher larval and pupal weights and survival and shorter duration to pupation and adult emergence. Taxa that consistently showed low larval survival were identified for further testing.

Original languageEnglish (US)
Pages (from-to)24-31
Number of pages8
JournalJournal of Entomological Science
Volume56
Issue number1
DOIs
StatePublished - Jan 1 2021

Keywords

  • antibiosis
  • fall armyworm
  • host plant resistance
  • Spodoptera frugiperda
  • zoysiagrass

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Agronomy and Crop Science
  • Insect Science

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