Vol. 11, Issue 7 (2022)

Author(s):
G Gunalarasi, M Joseph, S Srinivasan and J Bhuvaneswari

Abstract:
At the Agricultural College and Research Institute in Killikulam, an experiment trial was run during the Pishanam and Early kar seasons of 2021–2022. Treatments with various plant growth regulators were applied over different varieties of rice in respective randomized plots. This Experimental study suggests that application plant growth regulators significantly enhance the yield of ratoon rice. In that GA@ 5ppm gives the higher DMP and ratoon rice yield with higher B:C ratio in ASD16 followed by CR1009 perform well with this same treatment. Similar trend also found in straw yield. Followed by N: P: K (19:19:19) @1%+ NAA@ 40ppm gives the better grain and straw yield in both ASD16 and CR1009. BA@ 100ppm highly influences the tiller production, plant height and regeneration rate of buds but not much influence the grain and straw yield. White ponni mutant 22-2 performs poorly with all treatments.