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The Control of Rice Blast Disease by the Novel Biofungicide Formulations

Authors :
Aileen L. Delgado
Wen-Ching Chen
Tai-Ying Chiou
Chien-Sen Liao
Source :
Sustainability, Volume 11, Issue 12, Sustainability, Vol 11, Iss 12, p 3449 (2019)
Publication Year :
2019
Publisher :
Multidisciplinary Digital Publishing Institute, 2019.

Abstract

The study aims to develop novel biofungicide formulations against rice blast disease. A total of 300 rhizobacteria strains were isolated from rice field soil and were examined for the inhibition of Magnaporthe oryzae growth in a vitro test. Among them, only six rhizobacteria showed inhibition against M. oryzae. The three strains that showed the highest inhibition were Bacillus subtilis 5, B. cereus 3S5, and Pseudomonas fluorecens 10S2. A rice hull mixture and liquid medium were mixed with the above-mentioned bacterial suspensions into three bacterial formulas and tested separately on the rice cultivar UPLRi-5 after infection by M. oryzae under a controlled condition. The three novel biofungicide formulas significantly inhibited rice blast disease intensity with a mean disease control rate being approximately 31% higher than the control. The formulas proved to be effective and should be considered as promising novel treatments for rice blast disease.

Details

Language :
English
ISSN :
20711050
Database :
OpenAIRE
Journal :
Sustainability
Accession number :
edsair.doi.dedup.....f7fd8833d04551311ab12c0fec1b33c5
Full Text :
https://doi.org/10.3390/su11123449