134 



Fi:ktilizix(; Effixts of Vines of Cowpeas and Velvet 

 Beans as Shown ?.y Sorcium in 1S1)7. 



Ill IStlT sorulimii was ii^rown on three plots following, 

 resjXMtively, velvet bean vines ]>lowe(l under, cowpea 

 vines 1)1ow(h1 under, and fallow, or clean cultivation 

 without crop in 1S9G. 



In 1897 the yields of sorghum hay per acre were as 

 follows: 



Yield. I Increase 



Lbs. I Lbs. I % 



After fallow 



After cowpeas. plowed in . . . 

 After velvet beans, plowed in 



85 

 86 



The effect of the legumes was to nearly double the 

 crop of sorghum hay. 



Fertilizing Materials in Leaves, Stems, and Eoots 



OF THE Cowpea. 



In September, 1899, just 81 days after the planting 

 of the seed, samples Avere taken of six varieties of cow- 

 peas growing in 34-inch drills on poor gray sandy land. 

 The sample in each case comprised the entire growth on 

 a measured area of land, including the roots growing in 

 the upi)er G inches of soil, which stratum contained 

 nearly all the roots. 



After curing, the leaves, blooms and pods, coarse 

 stems ,fine stems (including runners, leafstalks, etc.), 

 fallen leaves and leafstalks,and roots vdth attached 

 stubble about two inches long, were carefully separated. 

 Analyses were made in the chemical department of a 

 composite sample representing all six varieties, the ma- 

 terial analyzed being extremely dry. (For analysis of 

 same samples showing food value see Alabama Station 

 Bulletin No. 118, page 37.) 



