Author(s):

TR Barathkumar and K Manivannan

Abstract: Ashwagandha (<em>Withania somnifera </em>Dunal.) is a medicinal plant of great values, which came into prominence in recent years. The commercial drug made out from ashwagandha consists of the dried roots, rich in several alkaloids, which have important medicinal values. Therefore, to augment the root yield and alkaloid content an experiment was carried out to study the Influence of biofertilizers and plant growth regulators on growth, yield and alkaloid content of ashwagandha. The treatments were comprised with the seedling root dip of biofertilizers (<em>Azospirillum</em> and Phosphobacteria) and combined application of biofertilizers along with the foliar spray of PGR’s <em>viz.,</em> IBA @ 100 ppm, Ethrel @ 250 ppm, MH @ 500 ppm and CCC @ 2000 ppm at 85, 115 and 145 DAS. The study revealed that the growth, yield and alkaloid content of Ashwagandha were increased favourably by the combined application of biofertilizers along with CCC @ 2000 ppm.

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