Weed control with fall and early-preplant herbicide applications in no-till soybean 1

Ryan F. Hasty, Christy L. Sprague, Aaron G Hager

Research output: Contribution to journalArticle

Abstract

Field studies were conducted during 1999 and 2000 to compare weed control after fall and early-preplant (EPP) herbicide applications in no-till soybean. Three residual treatments (chlor- imuron plus metribuzin, chlorimuron plus sulfentrazone, and metribuzin) were applied at two rates and timings (fall and 30 d EPP) either alone or in combination with glyphosate and 2,4-D. The addition of glyphosate and 2,4-D to fall-applied residual herbicides significantly increased control of common chickweed, annual bluegrass, cressleaf groundsel, and shepherd's-purse. The effect of application rate on weed control was species dependent. Fall-applied residual herbicides were comparable with EPP treatments with respect to winter annual weed control; however, at planting control of summer annual weed species with fall treatments was less consistent compared with EPP residual herbicides.

Original languageEnglish (US)
Pages (from-to)887-892
Number of pages6
JournalWeed Technology
Volume18
Issue number4
DOIs
StatePublished - Oct 1 2004

Keywords

  • AMATA
  • AMBEL
  • AMBTR
  • CHEAL
  • Fall applied
  • LAMAM
  • LAMPU
  • No till
  • Residual control
  • Winter annuals

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

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