Author(s):

Nitish Sharma, AH Khan, Nikita Nehal, Mayanker Singh and Yashwant Singh

Abstract: The present investigation entitled “Effect of PGRs on phenology and biochemical changes of mustard [<em>Brassica juncea </em>(L.) Czern. &amp; Coss.]” was conducted during <em>rabi </em>season, 2013-14 at the Student Instructional Farm of Narendra Deva University of Agriculture &amp; Technology, Kumarganj, Faizabad (U.P.), India. The experiment was laid out in randomized block design with ten treatments, three replications and one variety <em>i.e.</em> Narendra rai (NDR-8501). The treatments were comprised of foliar spray of 3 plant growth regulators (PGRs) of different concentrations <em>viz</em>., Salicylic acid (0.1 mM, 0.3 mM, 0.5 mM), GA₃(25 ppm, 50 ppm, 100 ppm) and kinetin (25 ppm, 50 ppm, 100 ppm) along with untreated control (distilled water spray) &amp; spraying was done at 30 DAS. The observations were taken on phenology parameters like number of flower plant^-1 at full blooming stage and biochemical parameters like chlorophyll content and NPK uptake. All the PGRs <em>viz</em>., salicylic acid, GA₃ and kinetin induced positive influence on number of flower plant^-1, chlorophyll content and NPK uptake in plants but the foliar spraying of GA₃ 50 ppm at 30 DAS was found more profound among all treatments. On the basis of above investigation it may be concluded that foliar spray of PGRs at 30 DAS may be used to increase in number of flowers per plant chlorophyll and NPK uptake in mustard

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