138 



The followiiiji: table shows what proportion of the en- 

 tire i>lant consisted of roots, fallen material, and hay, 

 in tlie i)hints har\'ested when rii»('inn«»- or when in 

 bloom. 



Ripening I Blooming 

 stage. stage. 



Tops 



Roots and stubble 

 Fallen leaves, etc . 



% 

 61 

 15 

 24 



When hay was made of cowpeas past their prime 

 there was left on the ground in roots, stubl)le, and fallen 

 material 48 per cent, of the weight of the plant, and 

 Avhen mowing occurred when the vines were in bloom 

 30 per cent, of the total weight remained as fertilizer 

 material. 



Analyses made by Prof. J. T. Anderson, Associate 

 Chemist of this Station, are recorded below : 



Composition of hajj, fallen material^ and roots and 



stuhblc of the cow pea. 



From this table it may be seen that the hay is more 

 than twice as rich as the roots and stubble in nitrogen, 

 and also richer in phosphoric acid and potash. 



The amounts of nitrogen contained in the hay, fallen 

 material, and roots and stubble on one acie w ere as fol- 

 lows : 



