Growth and Correlation with Weather Parameters as Affected by Transplanting Time and Different Varieties of Paddy (Oryza sativa L.)

Time of planting is the most important factor in influencing the yield of the crop. Performance of genotype entirely depends upon the time of planting. For obtaining higher paddy production study of crop for transplanting time and different varieties concerning weather parameters are very necessary.

Experiment was laid out in a split-plot design with three replications at Agriculture Research Station Farm, Vadgaon-Maval, Tal-Maval, Dist-Pune (M.S.) during Kharif, 2013 to study effect of transplanting time on different varieties of paddy concerning weather parameters. 48 treatment combinations were comprised of 4 transplanting times viz., 26^th, 28^th, 30^th and 32^nd meteorological weeks and four varieties viz., VDN-3-51-18, VDN-99-29, IET-13549 and RDN-99-1.

Transplanting of Kharif paddy during 28^th MW improved plant growth. Variety VDN-99-29 recorded significantly higher plant growth. Among the interaction, when the VDN-99-29 variety of paddy was transplanted during 28^th MW produced significant effect on plant growth. Correlation indicated that maximum temperature, bright sun hour and growing degree days showed significant and negative co-relationship with plant-growth, minimum temperature, RH-I and RH-II showed positive and significant correlation with growth.