COMPATIBLE INFLUENCE OF NP FERTILIZERS AND INDOLE ACETIC ACID WITH DIFFERENT DOSES ON COARSE RICE (ORYZA SATIVA L.)

Abstract

An experiment was launched to determine the response of Rice (Oryza sativa L.) to Nitrogen-Phosphorous (NP) levels and Indole acetic acid (IAA) at the agronomic research area, Faculty of Agriculture, Gomal University, during summer 2016. The experiment was laid out in Randomized Compete Block Design with split plot arrangement. Three fertilizer doses of Nitrogen and the Phosphorous (40 kg ha^-1, 80 kg ha^-1 and 120 kg ha^-1) along with control were kept in main plots. There were three doses of IAA (40 ml ha^-1, 80 ml ha^-1 and 120 ml ha^-1) with control and which were kept in one sub-plot. The effect of both applications (Nitrogen-Phosphorous & Indole acetic acid) in rice shown significant results about plant height, number of panicles m^-2, spikelet spike^-1 and number of kernels spike^-1, 1000-grain weight, paddy yield and BCR. The fertilizer dose of NP @ 80 kg ha^-1 produced higher paddy yield of 4.90 tonnes ha^-1 followed by fertilizer dose of NP @ 120 kg ha^-1 with paddy yield of 4.70 tonnes ha^-1. A higher yield of 4.95 tonnes ha^-1 was produced when Indole acetic acid was applied @ 80 ml ha^-1 which was followed by IAA @ 40 ml ha^-1 having yield of 4.50 tonnes ha^-1. The interaction among fertilizer and plant growth also showed significant effect on yield and yield contributing factors. Maximum benefit can be achieved when Indole acetic acid was applied @ 80 ml ha^-1 with fertilizer dose of Nitrogen and Phosphorous @ 80 kg ha^-1.