Enhancing rice (Oryza sativa L.) productivity through plant growth regulators

Abstract

An experiment was conducted at AC& RI, Killikulam to study the foliar application of plant growth regulator and nutrients in rabi Rice during 2011-2012. The experiment was laid out in Randomized Block Design with 16 treatments and replicated thrice. The result revealed that foliar spray of Triacontanol 2 ppm + Cytokinin 10 ppm + Polyfeed 1% + KCl 1% given at 35 and 65 DAT along with application of recommended dose of fertilizer increased all yield attributes viz., dry matter production (13.96 t ha-1), number of productive tillers (548 m-2), panicle length (23.8 cm) and decreased sterility level (12.5%). Further, the treatment recorded higher grain yield of 6.2 t ha-1 and straw yield of 6.95 t ha-1. It has been learned through this study, to maximize rice production in rabi season, by foliar application of Triacontanol 2 ppm + Cytokinin 10 ppm + Polyfeed 1% + KCl 1% applied at 35 and 65 DAT along with recommended dose of fertilizer as a viable nutrient management package to enhance grain yield in ADT 47 rice variety during rabi season.