International Journal of Chemical Studies
Vol. 6, Issue 1 (2018)
Influence of sowing dates on growth and yield of aerobic rice
Author(s): K Raju, AL Narayanan, R Mohan and S Nadaradjan
Abstract: A field experiment was conducted during rabi season from September 2013 to February 2014 at PAJANCOA & RI, Karaikal, Puducherry to study the relationship between weather parameters and yield of rice varieties at different dates of sowing under aerobic condition. The treatments consisted five dates of sowings ie., September 20th, September 27th, October 4th, October 11th and October 18th and three genotypes namely TRY 1, Improved White Ponni and ADT 39 varieties. The study revealed that the Growing Degree Days (GDD) during total lifespan decreased as the sowings were delayed. The accumulated GDD varied from 1507 to 1885.9 with different dates of sowing for total lifespan. The first date of sowing (D1 - Sep. 20th) had produced significantly higher yield (4,337 kg ha-1) over the subsequent sowing dates. Thus, the reduction of grain yield of rice was observed to the tune of 9-11 percent with delayed sowing. Days taken from sowing to physiological maturity reduced with subsequent delay sowings. From the study it was evident that under aerobic condition, the rice productivity would be reduced if sowings are delayed beyond the September 20th in rabi season.
Pages: 706-709 | 348 Views 5 Downloads
How to cite this article:
K Raju, AL Narayanan, R Mohan, S Nadaradjan. Influence of sowing dates on growth and yield of aerobic rice. Int J Chem Stud 2018;6(1):706-709.