169 



February 18, 1897, Red Rust Proof oats were sown after 

 the above mentioned crops, using in both cases 100 pounds of 

 acid phosphate and 80 pounds of nitrate of soda per acre. 



After cowpeas the oat straw grew to be three to four 

 inches taller than on the plot preceded by German millet- 

 The yields were as follows : 



Oats folloioing cowpeas and German millet^ 1897. 



In this case cowpeas were more valuable than German 

 millet as fertilizer for the following oat crop, the difference in 

 favor of cowpeas being 10.4 bushels of oats per acre and 229 

 pounds of straw. 



An experiment to ascertain the manurial values of cow- 

 peas and velvet beans, and to compare the relative fertilizer 

 value of the entire vines with that of the roots and stubble of 

 both plants, was begun in 1897. May 14, 1897, on poor 

 sandy soil Wonderful cowpeas were sown on two plots, velvet 

 beans (a leguminous plant closely related to cowpeas), on two 

 plots, and German millet on a fifth plot. A sixth plot was 

 prepared and fertilized but left without seed, to grow up in 

 crab grass, poverty weed, etc. Cowpeas and velvet beans were 

 sown in drills two feet apart, German millet broadcast. The 

 millet was cut for hay July 16, yielding 994 pounds per acre. 

 The cowpeas on one plot were picked September 10, yielding 

 11 bushels per acre. 



The velvet beans did not mature seed. 



In September, 1897, cowpeas on one plot and velvet beans 

 on one plot were cut for hay and the stubble plowed under. 

 The vines of cowpeas on one plot and of velvet beans on 

 another were also plowed under on the above mentioned date. 

 Then oats were sown at a uniform rate on all four plots, also 



