Evaluation of different fungicides (chemical, botanical and bio-agent) in controlling wheat blast in a blast prone area in Bangladesh

Abstract

This study aimed to evaluate the performance of different fungicides (chemical, botanical and bio-agent) against wheat blast under field conditions and to identify the best one for preventive spray. Among the fungicides evaluated, Nativo 75 WG (Tebuconazole 50% + Trifloxystrobin 25%), Amistar Top 325 SC (Azoxystrobin 20% + Difenoconazole 12.5%) and Cabrio Top 60 WG (Pyraclostrobin 5% + Metiram 55%) demonstrated the best results with least blast severity (4–8%) and the highest yield (78–88%). It was concluded that the mentioned fungicides can be used to control wheat head blast by spraying twice at 13–15 days interval starting with the heading stage.

Keywords:

• Wheat blast
• fungicides
• disease severity
• grain yield
• Bangladesh

Acknowledgement

The authors are highly acknowledged to Australian Centre for International Agricultural Research (ACIAR), CRP WHEAT, Sweden Research Council and Krishi Gobeshona Foundation (KGF) for financial support. We would like to thank to all the technical staff of Plant Pathology Division, BWMRI for providing the support needed for this study.

Disclosure statement

Th authors have declared no conflicts of interest.

Data transparency

All the analyzed data can be sent to the reviewer(s) upon request.