U9 



Value of crops per acre in three years (1) following cot- 

 ton and {2} followimj coicpea vines. 



♦Equal to 6% cents per pound of lint, and $7.50 per ton of seed. 



The total value of the products grown in three years 

 on an acre was §69.93 on the plot where no legume had 

 been grown for mam^ years and |112.90 per acre on 

 the plot where one crop of cowpeas had been grown once 

 in four years, and where the vines, after the picking of 

 the peas, had been plowed under at the beginning of the 

 three-year period Under consideration. The difference 

 in the value of the crops for three years is $42.97; the 

 average annual difference is f 14.32 per acre in favor of 

 the plot where cowpeas had been grown 



The figures showing the financial advantages of using 

 one crop of velvet beans for fertilizer during the same 

 period so nearly correspond with those for cowpeas that 

 the calculation need not be repeated. 



On this land the ploAving under of the vines of the 

 cowpeas and velvet beans was exceedingly profitable. The 



