The role of molybdenum and boron on the yield of berseem (Trifolium alexandrinum) in the Indo-Gangetic alluvium and residual soils of Bundel-khand region in Uttar Pradesh has been investigated. The yield of green matter obtained with molybdenum and boron, applied singly and in combination, with and without superphosphate, in. two different series of experiments at a number of farms in the state, showed a very marked response to 0.56 kg\ha (8 oz per acre) molybdenum, both in matured alluvial as well as residual soils at Pura and Bharari farms. The effect of boron was statistically not significant. Their combined application was not effective. Application of micronutrients at half dose (4 oz per acre) gave a remarkable response at Kalaifarm only. Phosphate application resulted in pronounced yields in all cases but it failed to improve the responsiveness of either of the two micro-nutrients at all the centres except the Kalaifarm.