Effects of Pseudomonas chlororaphis strain AFS009 and Beauveria bassiana strain GHA against Plumeria rust in Hawaii

Philip Waisen, Zhiqiang Cheng and Richard Criley
Additional contact information
Philip Waisen: Department of Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu, USA
Richard Criley: Department of Tropical Plant and Soil Sciences, University of Hawaii at Manoa, Honolulu, USA

Plant Protection Science, 2023, vol. 59, issue 2, 202-207

Abstract: This study examined the effects of beneficial rhizobacterium Pseudomonas chlororaphis strain AFS009 and entomopathogenic fungus Beauveria bassiana strain GHA against plumeria rust Coleosporium plumeriae. Two preemptive or three curative laboratory experiments and a curative field experiment were conducted to examine the effects of these commercially available biocontrol products. Treatments included the application of B. bassiana at 1.23 g/L and P. chlororaphis at 3 or 9 g/L. Systemic fungicide azoxystrobin applied at 0.12 g/L and water were included as positive and negative controls, respectively. While its effect was insignificant in the field trial, B. bassiana reduced the rust pustule development in one of two preemptive and two of three curative laboratory trials. In contrast, P. chlororaphis applied at 9 g/L suppressed the number of rust pustules in both laboratory and field experiments, demonstrating its potential biological activity against plumeria rust. In the field trial, the effect of P. chlororaphis was observed at 14 days post-treatment, suggesting that an application interval of 14 days on infected plants can take the rust under control.

Keywords: beneficial rhizobacteria; biological control; entomopathogenic fungus; plant disease management (search for similar items in EconPapers)
Date: 2023
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://pps.agriculturejournals.cz/doi/10.17221/86/2022-PPS.html (text/html)
http://pps.agriculturejournals.cz/doi/10.17221/86/2022-PPS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:59:y:2023:i:2:id:86-2022-pps

DOI: 10.17221/86/2022-PPS

Access Statistics for this article

Plant Protection Science is currently edited by Ing. Eva Karská, (Executive Editor PPS)

More articles in Plant Protection Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().