Effect of Fertilizers on the Sapogenin Yields of Dioscorea composita in Puerto Rico

Héctor J. Cruzado, Herminio Delpín, Franklin W. Martin
1969 The Journal of Agriculture of the University of Puerto Rico  
Seedlings of Dioscorea composita were treated with various combinations of ammonium sulfate, superphosphate, and potassium sulfate over a 3-year period. The tubers of the resulting plantings were tested for sapogenin content. Complete fertilization increased the sapogenin yields significantly as compared with an untreated control. Incomplete combinations or single-nutrient treatments did not significantly increase yields and, in some cases, decreased them. Yield increases were associated with
more » ... e associated with increased fresh and dry weight. Although no significant effects of fertility on percentage of sapogenin were found, tubers in unfertilized plots contained the highest sapogenin in percentage.
doi:10.46429/jaupr.v49i2.13024 fatcat:7vlodhkkb5fj7jg2yaux7cwy7m