Biorational approaches to managing Datura stramonium

Jianhua Zhang, Maria L. Salas, Nicholas R. Jordan, Stephen C. Weller

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Field experiments were conducted from 1995 to 1997 to test approaches to managing atrazine-resistant Datura stramonium. Eight weed management programs in a Zea mays and Glycine max rotation were evaluated for their effects on the dynamics of atrazine-resistant and -susceptible D. stramonium populations. Overall D. stramonium density and relative abundance of resistant (R) biotypes were greatly reduced in no-till Secale cereale L. (rye) cover crop management programs without triazine compared to conventional-tillage systems with the application of triazine herbicides. The negative effects of no-till on D. stramonium were greater under a G. max-Z. mays-G. max (SCS) rotation than under a Z. mays-G. max-Z. mays (CSC) rotation. A cropping system involving more G. max phases under no-till reduced both the resistant and susceptible D. stramonium populations. Results from this study support the use of soil management, crop rotation, and negative cross-resistant herbicides to manage atrazine-resistant biotypes.

Original languageEnglish (US)
Pages (from-to)750-756
Number of pages7
JournalWeed Science
Volume47
Issue number6
StatePublished - Nov 1 1999

Keywords

  • Conservation tillage
  • Corn-soybean rotation
  • Cultural weed control
  • DATST
  • Herbicide resistance
  • Integrated weed management
  • Population dynamics
  • Row width
  • Seed production

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