The Bulletin. 



31 



pounds of manure salt; second from 150 pounds of dried blood, 280 

 pounds of basic slag and 100 pounds of manure salt ; third from 75 

 pounds of dried blood, 140 pounds of basic slag and 150 pounds of ma- 

 nure salt (see Fig. 6) ; fourth from 75 pounds of dried blood, 280 

 pounds of basic slag and 50 pounds of manure salt; fifth from 75 

 pounds dried blood, 70 pounds of basic slag and 50 pounds of manure 

 salt ; sixth from 75 pounds of dried blood, 420 pounds of basic slag and 

 50 pounds of manure salt ; and seventh from the unfertilized plat. It 

 will be noticed that all the yields and values at this farm are remark- 

 ably small, this being due largely to a very wet season, followed by a 

 very early frost, which cut off the yields from one-third to one-half. 

 In the eighth column of Table XV it will be seen that an application 

 of 371/^ pounds of dried blood, 33 pounds of nitrate of soda, 140 

 pounds basic slag and 50 pounds of manure salt per acre ranlved in 

 value of increase over cost of fertilizer almost three and three-quar- 

 ters as much as the unfertilized plat did per acre ; while an applica- 

 tion of 75 pounds of dried blood, 140 pounds of basic slag and 50 

 pounds of manure salt gave two and twelve-hundredth times the 

 increase of no fertilization. 



Table XVI— RESULTS OF TESTS WITH BASIC SLAG ON CORN IN 1906. 



Edgecombe Faem. 



.a 



E 



s 



iz; 



s 



Fertilizer Application per Acre. 



( 65 pounds dried blood -■-- 



•I 55 pounds basic slag 



L 25 pounds manure salt — 



f 65 pounds dried blood -. 

 •j 110 pounds basic slag -— 

 I 25 pounds manure salt - 



65 pounds dried blood -- 



220 pounds basic slag — 



25 pounds manure salt - 



Nothing- 



65 pounds dried blood -- 



330 pounds basic slag — 



25 pounds manure salt - 



130 pounds dried blood -- 



220 pounds basic slag — 



50 pounds manure salt - 



f 32V4 pounds dried blood -- 

 30 pounds nitrate of soda . 



110 pounds basic slag 



25 pounds manure salt 



B 





NPK 



NPoK 



NPaK 



NPK 



20.2 



18.7 

 13.1 



17.8 



2 (NPK) I 20.0 



17.0 



c 2 



U 3 



oog 



O ft 

 Hi m 



es a) 



NPVsK i 26.2 ! $15.72 



12.00 



11.22 



7.86 



10.68 



12.00 

 10.20 



$ 2.70 $13.02 



3.19 



4.18 



8.81 



7.04 

 7.86 

 5.17 I 5.51 



6.38 5.62 

 2.97 7.23 



1.66 



1.12 



.90 



1.00 



.70 



.72 

 .92 



