Integrated scoring system for rice blast


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Authors

  • URMILA DHUA Division of Plant Pathology, Central Rice Research Institute, Cuttack 753 006

Keywords:

Integrated scoring system, disease severity index

Abstract

An integrated scoring method for precise assessment of the severity of rice blast (Magnaporthe grisae) was developed. DS index values included a function of quantity as well as quality of diseased area. The daughter lesion production ability of spots or p:u ratio was taken as a measure of lesion quality. The relationship between p:u ratio and the area and colour of blast lesions was investigated, and lesion quality was expressed as numerates. The reaction of the host to rice blast was classified into 5 groups based on DS index values.

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Issue

Vol. 51 No. 1 (1998): Indian Phytopathology

Section

Research Articles

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How to Cite

DHUA, U. (2002). Integrated scoring system for rice blast. Indian Phytopathology, 51(1), 57-60. https://epubs.icar.org.in/index.php/IPPJ/article/view/19599