Effect of microclimatic modification on the growth and yield of transplanted rice (Oryza sativa L.)

Abstract

A field experiment was conducted during kharif season in the year 2015-16 on rice at Agro-meteorological research farm of Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad. The experiment consisted of four replication and nine treatment combinations comprised of three planting geometry viz., Godavari-Ganga-Boss, SHIATS-Dhan-1 and Arise-6444-Gold. Results revealed that planting geometry at 20x10cm produced significantly higher growth yield attributes and yield due to fulfilment of optimum planting population, thermal requirement and solar light requirement for various plant processes. The highest thermal use efficiency was recorded when sowing was done on 20x15cm planting geometry followed by 20x10cm spacing, Arise-6444 Gold recorded highest thermal use efficiency at all the stages. The interaction between microclimatic modification and varieties was found non-significant and thermal unit of (21650 days), from sowing to maturity produced the highest yield of rice variety Shiats-Dhan1.