Effect of Different Levels of Nitrogen, Phosphate and Potash on Yield and Diosgenin Content of Dioscorea Floribunda*

To find out the influence of different levels of nitrogen, phosphate and potash on the tuber yield and diosgenin content of D. floribunda, field experiments were conducted during 1971–72 and 1972–73. Nitrogen significantly increased the yield of tubers. This yield increase was linear upto a level of 300 kg nitrogen per hectare. There was no significant response to phosphorus and potash. There was no significant effect on the diosgenin content of the tuber due to different treatments.