National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The field experiment was carried out in kharif season 2012-13 for studying relationship between weather parameters and growth of sorghum and to develop the regression model. The sowing date 24thMW showed significantly superior over the rest of treatments with production of highest grain yield (1482.10 kg ha-1) followed by sowing in second sowing date 25thMW (1444.2 kg ha-1)and lowest grain yield was observed in fourth sowing date 27th MW (1119.31 kg ha-1). Correlation between weather parameters and growth stages of sorghum with grain yield showed that all the weather parameters mostly positively and highly significant correlation at different growth stages except flag leaf to boot stage. While, it was found highly and negatively significant correlated at all the growth stages expect panicle initiation to flag leaf; boost stage to heading and dough stage with different weather parameters. The multiple regression coefficients (R2) at each stage showed a high degree of goodness of fit as indicated by as high as 0.74 to 0.88. The regression model for different growth stages was developed and it was found significant. It showed accurate and useful yield prediction because of its error percentage is very less ranging between 0.07 to 4.62 percentages.
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