Effect of foliar application of brassinolide and salicylic acid on NPK content in leaf and nutritive values of seed in green gram (Vigna radiata L. Wilczek)

Effect of foliar application of brassinolide and salicylic acid on NPK content in leaf and nutritive values of seed in green gram (Vigna radiata L. Wilczek)

2008

A:PS

A field experiment was conducted in Mohanpur, West Bengal, India, during the kharif seasons of 2005 and 2006 to study the effect of brassinolide (BR, at 0.10, 0.25 and 0.50 ppm) and salicylic acid (SA, at 500, 1000 and 1500 ppm) on the leaf N, P and K contents and seed nutritive value of green gram (Vigna radiata) cv. PDM 54. Eight treatments were given as foliar spray, including two types of control, i.e. water spray and no spray. Foliar application of the plant growth regulator once at pre-flowering (30 days after sowing, DAS) and second time at flowering stage (40 DAS) significantly increased the N, P and K contents in the leaves of green gram up to 50 DAS, followed by a gradual decline till harvest of the crop. The seed nutritive value, particularly sugar, starch, protein, methionine and ascorbic acid contents, were found to be influenced by the application of the bio-regulator. BR at 0.25 ppm and SA at 1000 ppm were the most effective, indicating optimum doses respectively and BR was superior than SA for influencing these metabolite contents.

v.31(3):169-173, LEGUME RESEARCH

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