131 



Excess of yield of corn in bushels per acre on vine plots 



as compared in 1898 icith ivo-legumes plot and in 



1901 with plot where only pea stuhhle had been 



plowed under. 



Variety of cowpeas, 



Wonderful (or Unknown) .... 



Whippoorwill 



Clay 



Black, from Hastings 



Red Ripper 



New Era 



White Giant 



Jones White 



Large White Crowder 



Lady 



Average 



189S. 

 Bus. 



1901. 

 Bus. 



These figures are given merely as a matter of record, 

 and no conclusions are vet warranted. As a matter 

 of common experience any variety of cowpeas affords 

 in its vines as much or more nitrogen than the follow- 

 ing corn crop can utilize. For crops requiring a larger 

 amount of nitrogen or for larger supplies of vegetable 

 matter we mav safelv value the numerous varieties of 

 cowpeas in proportion to the yeild of hay which they 

 would afford if thus utilized. As noted in Bulletin 118 

 Wonderful (or Unknown), Clay, and Iron are among 

 the varieties makins^ laro-e vields of hav, and hence of 

 fertilizing material. The Wonderful, by reason of its 

 large yeild, large stems and roots, and varied useful- 

 ness, is especially recommended for fertilizing pur- 

 poses. It is possible, however, that future investiga- 

 tions may show some advantage for varieties that run 

 along the ground and thus by the tangle of runners hold 

 in place on sloping ground in winter a larger propor- 

 tion of the leaves than is done bv an erect varietv like 

 Whippoorwill or Wonderful. 



