Effect of selected biopesticides in reducing Soybean rust (phakopsora pachyrhizi) development

M. Twizeyimana, G. L. Hartman

Research output: Contribution to journalArticlepeer-review

Abstract

The intensive use of fungicides in controlling soybean rust (SBR), a damaging foliar fungal disease of soybean caused by the obligate fungus Phakopsora pachyrhizi, may have accelerated the insensitivity of P. pachyrhizi populations to fungicides. The objective of this study was to determine the effect of selected biopesticides and their application time on reducing SBR infection. There were differences (P < 0.05) in percent rust reduction values for application times, biopesticide treatments, and their interaction in detached-leaf and whole-plant greenhouse experiments. All application times and nearly all biopesticide treatments reduced (a = 0.05) fungal infection compared with the nonfungicide control. Among the treatments, Bacillus subtilis QST 713 and acibenzolar-S-methyl often reduced fungal sporulation more than the other treatments in detachedleaf and whole-plant greenhouse experiments. The identification of biopesticides effective to P. pachyrhizi may be a valuable alternative or complement to synthetic fungicides and may be useful in integrated pest management programs for SBR control.

Original languageEnglish (US)
Pages (from-to)2460-2466
Number of pages7
JournalPlant disease
Volume103
Issue number9
DOIs
StatePublished - Sep 2019

Keywords

  • Disease management

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Fingerprint

Dive into the research topics of 'Effect of selected biopesticides in reducing Soybean rust (phakopsora pachyrhizi) development'. Together they form a unique fingerprint.

Cite this