A field study was conducted to evaluate the “Effect of plant growth regulators on biochemical parameters of mustard [Brassica juncea (L.) Czern & Coss.] under sodic soil.” An experiment was laid out in randomized block design with seven treatments and three replications. The field experiment treatments consist of foliar spray with GA3 (50ppm, 100ppm, 150ppm) and salicylic acid (100ppm, 200ppm, 300ppm) were prepared on weight by volume basis as per desired concentration. Data confined to physiological changes like chlorophyll content, catalase activity were recorded at 40, 60 and 80 DAS. Oil content (%) in mature seeds was recorded at maturity. Significantly higher chlorophyll contents and catalase activity in leaves were estimated with the foliar spray of 100 ppm GA3 (2.51, 5.05, 2.24) chlorophyll content mg g-1 fresh weight and (69.17, 173.80, 171.30) catalase activity EU mg-1 protein min-1 and Significantly higher oil content (%) in mature seeds of mustard were estimated with the foliar application of 100 ppm GA3 (40.67 %) as compared to control. These biochemical parameters superior with foliar application of GA3 100ppm followed by Salicylic acid 200ppm.
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