528 FORAGE PLANTS AND THEIR CULTURE 



TABLE SHOWING CHEMICAL ANALYSES OF MAMMOTH SOYBEAN 

 HAY CUT AT FOUR DIFFERENT STAGES 



642. Hay yields. Yields of soybean hay range from 1 

 to 3 tons and occasionally 4 tons to the acre. The average 

 yield is about 2 tons to the acre : 



TABLE SHOWING YIELDS OF SOYBEAN HAY AT VARIOUS AMERI- 

 CAN EXPERIMENT STATIONS, IN POUNDS TO THE ACRE 



643. Fertilizers. On land of moderate fertility, com- 

 mercial fertilizers do not seem to show marked results in 

 the yield of soybeans. On sandy soil or soils in poor con- 

 dition, experiments show that a dressing of stable manure 

 or of acid phosphate and potash gives the best results. 



