GROWTH, LEAF CHEMICAL PARAMETERS AND YIELD OF AROMATIC RICE CV. CHINIGURA UNDER DIFFERENT LEVELS OF BAP

Abstract

A field experiment was conducted at the Agricultural farm of the Agricultural Chemistry Department, Hajee Mohammad Danesh Science and Technology University, Dinajpur, during the period from September to December, 2015 to study the effect of different levels of benzylaminopurine on morphophysiological, yield and yield characters of chinigura rice cultiver. Results showed that the morpho-physiological, yield and yield attributes were significantly different among the levels of BAP. The plant height, leaf length, leaf breadth, leaf number per plant, flag leaf chlorophyll content, tiller number hill-1 , panicle length, panicle number hill-1 , 1000-grain weight, grain yield (t ha-1 ) , biological yield and harvest index were increased markedly due to the application of BAP. The highest number of effective tiller, grain number panicle-1 , grain yield (t ha-1 ) , flag leaf Mg content , biological yield , and harvest index were obtained from 100 ppm BAP spraying at vegetative and pre-flowering stages. The highest yield of chinigura rice was 2.35 ton ha-1 due to the application of 100 ppm BAP which was statistically similar with 150 ppm BAP , where as other levels and controlled condition had less pronounced effect on the growth and yield components of chinigura rice. Plant growth regulators promote the growth and yield of rice varieties which might be an alternative eco-friendly tool to rice production.