20 



by the first picking. The total weight of the cotton picked from the 

 several plats bears out the results of the counts, for it is noticeable 

 that the maximum square production on the unfertilized plats never 

 reached as high as on those which were fertilized, and Plat VIII, which 

 had ordinar}' treatment, was considerall}^ below Plats III and V, unfer- 

 tilized, but which were planted with King seed and thorough!}^ culti- 

 vated. The same effects are noticeable in the maximum boll produc- 

 tion. 



Bolls which are full grown by August 15, as shown by counts of 

 injured and uninjured fruit, are practicall}'^ safe from bollworm injury; 

 hence the advantage of early-fruiting varieties, earl}^ planting, ferti- 

 lizers, and thorough cultivation may be readily seen: for on the above 

 date Plats I, II, IV, VI, and VII show an average of 19 1 bolls per 

 plant, which would be practical!}' out of danger of bollworm injury. 

 Of these 19| bolls there was an average of igV bolls per plant open 

 on that date. Plats III and V show an average of 18^V bolls per 

 plant practically out of danger, an average of l^V of these being open. 

 Plat VIII had 9^^^ bolls per plant out of danger, or less than half the 

 number which on the fertilized plats would be quite sure of escaping 

 bollworm injury. 



PITTSBURG FARM. 



The experimental farm at Pittsburg, Tex., on the plantation of Mr. 

 J. F. Harrison, was located on a t^^pical sandy soil of that section. It 

 was supposed that fertilizers would exert considerable influence on the 

 production of cotton on a soil of this character, and this feature of the 

 work was emphasized. The land used was said to have been in culti- 

 vation continuously for the past sixty years. In 1902 it was planted 

 to corn and in 1903 to cotton. The productiveness of the land was 

 considered to be one-fourth bale per acre. 



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