30 



The Bulletin. 



RESULTS OF BASIC SLAG TESTS WITH COTTON. 



The detailed plans and results of these tests are shown by data 

 contained in Tables XIV and XV, the last two columns of the tables 

 showing in a concise way the relative standing of the different appli- 

 cations, when compared with unfertilized plats and plats fertilized 

 with normal applications of fertilizing mixtures. The plats at the 

 Edgecombe farm producing the greatest values above cost of ferti- 

 lizers applied were those receiving applications of 75 pounds of dried 

 blood, 280 pounds of basic slag and 50 pounds of manure salt; 37^ 



Fig. 6— Cotton grown at Iredell Farm and fertilized with 75 pounds of Dried Blood, 140 pounds of 



Basic Slag and 50 pounds of Manure Salt. 



pounds of dried blood, 33 pounds of nitrate of soda, 140 pounds of 

 basic slag and 50 pounds of manure salt; and 150 paunds of dried 

 blood, 280 pounds of basic slag and 100 pounds of manure salt per 

 acre. The order of profits from these applications is the order in 

 which the applications are given above. The unfertilized plat pro- 

 duced seed cotton to the value of $44.80 per acre and ranked in fourth 

 place in order of profitable production. 



At the Iredell farm the order of values of increase over cost of 

 fertilizers per acre were in the following order: 



First from an application of a mixture of 37^/2 pounds of dried 

 blood, 33 pounds of nitrate of soda, 140 pounds of basic slag and 50 



