Open AccessSpectral reflectance characteristics of healthy and yellow mosaic virus infected soybean (Glycine max L.) leaves in a semiarid environment
Author(s) -
Deb Kumar Das,
Sanatan Pradhan,
Vinay Kumar Sehgal,
Rabi Narayan Sahoo,
V. K. Gupta,
Ravender Singh
Publication year - 2013
Publication title -
journal of agrometeorology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 11
eISSN - 2583-2980
pISSN - 0972-1665
DOI - 10.54386/jam.v15i1.1435
Subject(s) - normalized difference vegetation index , kharif crop , reflectivity , photochemical reflectance index , pusa , crop , chlorophyll , vegetation (pathology) , agronomy , enhanced vegetation index , mosaic virus , horticulture , biology , vegetation index , leaf area index , cultivar , virus , plant virus , medicine , physics , optics , pathology , virology
Field experiments were conducted during Kharif 2009 and 2010 at IARI farm, New Delhi to study the spectral reflectance characteristics of YMV susceptible (JS-335) and tolerant (Pusa-9814) varieties. In both the years, 90-100% leaves of the variety, JS-335 and 5-10% leaves of the variety, Pusa-9814 were infected with the disease in the field. In order to characterize spectral reflectance of healthy andYMV infected soybean crop, soybean leaves were collected from YMV-infected crop (JS-335) and healthy crop (Pusa-9814) and taken to laboratory for reflectance measurement under controlled condition. Leaf chlorophyll content was measured using DMSO method. Normalized Difference Vegetation Index (NDVI), Ratio Vegetation Index (RVI), Greeness Index (GI), Photochemical Reflectance Index (PRI) and Leaf Moisture Vegetation Index 1 (LMVI1) were computed and it was observed that NDVI was found to be useful in detecting yellow mosaic virus infected soybean.