GROWTH AND YIELD OF AROMATIC RICE KALIJIRA USING THREE PGRs (6-BAP, GA3 AND NAA)

Abstract

A field experiment was done to study the effect of 6-BAP (6-Butyl amino purine), GA3 and Napthaline Acetic Acid (NAA) on morpho-physiological, yield and yield characters of rice varieties cv. Kalijira differently. The 6-BAP was applied 0, 30, 40, 50 and 60 ppm for GA3: 0, 30, 40, 50 and 60 ppm and for NAA: 0, 50, 75, 100 and 125 ppm at vegetative and preflowering stage. Result showed that the morpho-physiological, yield and yield attributes were significantly different among the hormones studied under the application of different levels of 6-BAP, GA3 and NAA. Three plant growth regulators (PGRS) (6- BAP, GA3 and NAA) showed their positive effect on growth and yield of aromatic rice cv. Kalijira differently. The growth parameters were influence by 6-BAP, GA3 and NAA. The three PGRS (6-BAP, GA3 and NAA) showed their positive effect on growth and yield of aromatic rice cv. Kalijira. The growth parameters were influence differently by 6-BAP, GA3 and NAA. There was no maeked effect on plant height but leaf numbers, leaf length and leaf blade width were influenced. The highest plant height was 162.3 cm produced by GA3 while the lowest was 146.3 cm by NAA. The result showed that 40 ppm of 6-BAP had a significant effect on effective tiller number hill-1. Than 40 ppm GA3 land while 100 ppm of NAA. The similar trend was observed in grain number per panicle and 1000-grain weight. There was a significant variation among the PGRS and their different levels. The highest grain yield was obtained by spraying BAP at vegetative and pre-flowering stages using 40 ppm than those of GA3 and NAA. The grain yield of Kalijira was 2.55 (t ha-1) for BAP at 40 ppm, while 2.25 (t ha-1) for GA3 at 40 ppm and 2.01 (t ha-1) for NAA at 100 ppm, respectively. Plant growth regulators (6-BAP, GA3 and NAA) enhanced growth and yield of aromatic rice cv. Kalijira which considered an environment friendly management practices for rice production.