The BuLLETiisr. 41 



is more accurate than the average (on account of the lack of uniformity 

 in field A), two applications of the nitrogen in all cases gave larger profit 

 than the single application either applied in the drill before planting 

 (plat 11) or broadcasted (plat 7^). From the data .at hand it hardly 

 seems safe to draw any definite conclusions in favor of either method. 

 Taking into consideration the results from similar treatments on the 

 Iredell Test Farm (see August Bulletin, 1910, l^o. 139), it appears 

 that the dried blood and nitrate of soda are about equally satisfactory 

 sources of nitrogen, the choice between them depending largely on 

 market prices, and that very little extra profit can be expected by making 

 two applications of the nitrogen when the total amount is not over ten 

 pounds per acre. In larger amounts a second application may prove 

 profitable. 



