/ 



43 



Experiments made by G. S. McClure, 2 miles east of^ 



Garland, Butler County. 



Gray sandy lancl^ with stiff er yelloicish subsoil at depth 



of Q inches. 



The experiment in 1899 was made in a field cleared 

 about 1880 and continuously in cultivation during each 

 of the past six years. The test in 1900 was conducted 

 on land that had been cleared about twelve years. The 

 original growth was long-leaf pine, with a few black- 

 jack oaks. 



In both experiments oats was the preceding crop. 

 There was practically no injury from '^black rust'' in 

 1900. In 1899 this disease caused considerable loss on 

 Plot 2 and a smaller amount on plots 5 and 3, with prac- 

 tically no injury on other parts of the experiment. 



The table on page 48 and the analysis of that table 

 given below sliow the yield and amount of increase 

 attributable to the fertilizers. 



Increase of seed cotton per acre when cotton seed meal 



was added : 



1899. 1900. 



To unfertilized plot 272 lbs. 96 lbs. 



To acid phosphate plot 492 lbs. 336 lbs. 



To kainit plot 252 lbs. 168 lbs. 



To acid phosphate and kainit plot 40 lbs. 344 lbs. 



Average increase wilh cotton seed meal, 264 lbs. 236 lbs. 



Increase of seed cotton per acre when acid phosphate 

 w^as added: 



To unfertilized plot 152 lbs. 160 lbs. 



To cotton seed meal plot 372 lbs. 400 lbs. 



To cotton seed meal and kainit plot. . . . 154 lbs. 208 lbs. 



Average increase with acid phosphate, 261 lbs. 200 lbs. 



