Open AccessStudies of weather effect on frog-eye spot disease in Bidi tobacco using logistics regression
Author(s) -
Kandarp Joshi,
D. J. Parmar,
Y. M. ROJASRA
Publication year - 2018
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.v20i2.524
Subject(s) - sunshine duration , regression analysis , maximum temperature , environmental science , air temperature , weather patterns , meteorology , toxicology , atmospheric sciences , mathematics , statistics , biology , geography , relative humidity , ecology , climate change , physics
The frog-eye spot (FES) disease caused by Cercospor anicotianae Ell. and Eve. is a major problem in both nursery as well as in the main field of bidi tobacco growing environments. Eight years data (2008-2015) on occurrence of disease and weather parameters were used for logistics regression analysis. The results indicated that sunshine hours (BSS) and minimum temperature (Tmin) were positiveand highly significant, whereas maximum temperature (Tmax) and rainfall (R) were found negative and highly significant.Further results of odd ratio indicated that every increase in 1 unit in BSS and Tmin, the risk of FES increases 1.7 and 1.4 times, respectively, whereas increase in 1 unit in Tmax and rainfall, the risk of FES decreases at rate of 0.6 and 1.0 times, respectively.