Work

Effect of Selected Biopesticides in Reducing Soybean Rust (Phakopsora pachyrhizi) Development

Year: 2019

Type: article

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 (α = 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 detached-leaf 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.

Source: Plant Disease

DOI: 10.1094/pdis-02-19-0384-re

Authors: M. Twizeyimana, G. L. Hartman

Institutions: University of Illinois Urbana-Champaign, Agricultural Research Service

Language: English

Topic: Fungal Plant Pathogen Control

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Funder: U.S. Department of Agriculture