\)\ 



yield of hay Avas about hall' thai from Ihe cowpoas 

 Avheii seeded alone. 



The soy bean as a soil improving crop is shown by 

 comparing the fertilizing effect of soy beans, cowpeas 

 and corn on a folloxN ing cotton crop. The average 

 yield of seed cotton following corn was 11 11 pounds; 

 following cowpeas 1 12(5 })ounds; and following soy 

 beans 1459 pounds. The increase due to the fertilizing 

 effect of the cowpeas was 285 pounds seed cotton, and 

 of the soy beans 318 pounds. If the value of the seed 

 cotton is reckoned at 4 cents per pound, the fertilizing 

 effect of the cowpeas would be '1>11.40 per acre; and of 

 the soy beans -$12.72. 



The fertilizing effect of soy beans on a following 

 hay crop is shown when a comparison is made of th;> 

 yields of hay grown on corn lands, cowpea land and 

 soy bean land. The average jaelds of hay made from a 

 mixture of Red Rust Proof oats and Crimson Clover, 

 from Rlue Stem Wheat and Crimson Clover, and from 

 Crimson Clover alone was 4249 i:)ounds per acre when 

 they followed soy beans; 4268 pounds per acre when 

 they followed cowpeas; and only 3391 pounds after 

 corn. The increase due to the fertilizing effect of soy 

 beans was 858 pounds of hay, and of cow^peas 877 

 pounds. If the value of the hay is reckoned at 1>15 a 

 ton, the fertilizing effect of the soy beans over the 

 corn was .$6.43 per acre, and of the cowpeas over the 

 corn was $6.56. 



In a comparison the fertilizing effect of a crop of 

 corn and of soy beans on a following winter oat crop 

 the increased yield of the soy bean land over corn land 

 was 173 per cent. 



The comparative average yield of corn, cowpea and 

 soy bean grain based on an eight year period was 1677 

 pounds of corn, 611 pounds of cowpeas, and 721 pounds 

 of soy beans. 



The most connnon enemies to the soy bean are rab- 

 bits, nematodes, wilt, and root-rot. 



A brief description of leading varieties is given. 



