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Flyer: a Simple Yet Robust Model for Estimating Yield Loss from Rice False Smut Disease (ustilaginoideavirens)

Bodrun Nesa
Senior Scientific Officer
Plant Pathology Division, Bangladesh Rice Research Institute,Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

An investigation was carried out to develop a simple generic model to estimate yield loss from rice false smut disease and to test the model in diverse environments across national boundaries to enhance its universal applicability. The model FLYER (FaLse smut induced Yield loss Estimator in Rice) which estimates the yield loss in rice due to rice false smut disease in a field scale was developed using data from Bangladesh, India and Japan. The model is run by two inputs: (i) fraction of productive but diseased tillers in a field, and (ii) averaged number of smut balls present in the diseased panicles. The driving algorithm of the model, the yield reduction in a diseased panicle as a function of number of smut balls present in the panicle, was validated with additional data from Bangladesh and Japan. When tested with independent data from fields infected naturally by RFSm, FLYER closely estimated the yield loss. This model could contribute to rapid assessment of regional and variety-specific yield loss, and strategic management of the disease on a field-by-field basis.

Keywords: Rice, FLYER, Model, Yeld loss, False smut disease.

Location: BRRI Farm, Gazipur

Start Date: 01-07-2014

End Date: 30-06-2015

Program Area: Pest Management

Commodity: Rice

Objectives:

1) To develop a simple generic model to estimate yield loss from rice false smut disease and

2) To test the model in diverse environments across national boundaries to enhance its universal applicability.

Methodology:

The model FLYER (FaLse smut induced Yield loss Estimator in Rice) which estimates the yield loss in rice due to rice false smut disease in a field scale was developed using data from Bangladesh, India and Japan. The model is run by two inputs: (i) fraction of productive but diseased tillers in a field, and (ii) averaged number of smut balls present in the diseased panicles.

Source of Information: BRRI Annual Report 2014-15.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

This model could contribute to rapid assessment of regional and variety-specific yield loss, and strategic management of the disease on a field-by-field basis.

Knowledge Management: Report/Proceedings