40 EXPERIMENT STATION RECORD. 



was obtained in 1908, but in 1907 in this same experiment the average increase 

 was only 269 lbs. The best average increase in yield of seed cotton from the use 

 of acid phosphate was 687 lbs., secured in 1905 on dark gray sandy soil with 

 light colored clay subsoil. Kainit gave its greatest inci-ease, 389 lbs. per acre, 

 on gray sandy soil with yellow loam subsoil in 1906. 



The results show considerable variation and no general conclusions are drawn. 

 As a rule, however, the complete applications gave the best returns, with the 

 combinations of two substances ranking next. 



Varieties of cotton, 1908, W. R. Perkins (JIississi2)pi Sta. Bui. 116, pp. 6). — 

 The yields of varieties of cotton tested in 1908 are shown in a table and notes 

 on some of the princli)al varieties are given. 



Of 20 varieties compared the following, given in decreasing order of total 

 value of lint and seed per acre, were the leading varieties: Cleveland Big Boll, 

 Cook Improved, Smith Double Header, Russell Big Boll. McKay July, and 

 Excelsior. The value of the total crop produced per acre ranged from $115.33 

 to $79.11, or a difference of over $35 per acre. These varieties were grown on 

 first class bottom loam, which received a good application of barnyard manure 

 in 1904, was in small fruit till May, 1907, when it was sown to cowpeas which 

 were turned under the following winter. The soil and the cultivation given ai"e 

 considered of greater importance in the production of the heavy yields than the 

 varieties. 



Cotton culture in Mississippi, W. L. Hutchinson {Mississippi Sta. Bui. 111. 

 pp. 6). — This bulletin discusses briefly the methods to be employed in areas 

 infested with the boll weevil for the successful growing of cotton in Mississippi. 



It is pointed out that the essential feature is the production of the crop in 

 100 to 120 days during the first part of the season. " Success depends essen- 

 tially on good tillage, proper fertilization, the itlanting of gOod seed of a good 

 early variety of cotton as soon as weather conditions are favorable, and properly 

 cleaning up the farm of hibernating places for the weevils during the winter 

 months." 



Notes on soil prepai'ation, fertilization, planting, and cultivation are given and 

 Cleveland Big Boll, Cook Improved, Russell Big Boll, Triumph, Smith Double 

 Header, Prize, King Improved, and Toole are mentioned as suitable Aarieties. 



[Work in agriculture], R. W. Clothier i Arizona Sta. Rpt. 1908, pp. 339, 

 34O). — A report is presented on attempts to introduce cotton culture into Ari- 

 zona, and a brief note on the iiossibilities of dry farming is given. 



At Arlington, 105 acres of short staple, 3 acres of Allen Improved long staple, 

 and 19 acres of Mit-aflfl Egyptian cotton were planted in 1908. At the station 

 farm the same varieties and Rogers Big Boll were planted on 3 plats of heavy 

 adobe and on 3 plats of lighter soil. Irrigation, considered necessary after 

 planting, was given but resulted in a failure to secure a stand on the adobe soil. 

 On the lighter soil the Egyptian cotton had a stand of 25.4 per cent, Allen Im- 

 proved long staple of 34.1 per cent, and Rogers Big Boll of 25.1 per cent. The 

 Egyptian cotton yielded 758 lbs. of seed cotton per acre, Allen Improved long 

 staple 992 lbs., and Rogers Big Boll 1,355 lbs. 



Suppressed and intensified characters in cotton hybrids, O. F. Cook ( U. S. 

 Dept. Agr.. Bur. Plant Indus. Bui. 1 '/l, pp. 27). — The observations discussed in 

 this bulletin are summarized as follows : 



" In hybrids between the Kekchi cotton and United States Upland varieties 

 the bractlets are suppressed and the lint shortened, while in hybrids between 

 Kekchi and Egyptian cotton the bractlets are enlarged and the lint is notably 

 improved in length and quality. In the first generation of the Egyptian hybrids 

 the intensification of the characters which gives superiority to the Hut is so 



