20 BULLETIN 1153, U. S. DEPARTMENT OE AGRICULTURE. 



Atees, W. E. 



1919. Cultural experiments with cotton— 1918. Ark. Agr. Exp. Sta. Bui. 

 161, 15 p., illus. 



Cook, O. F. 



1919. Experiments in spacing cotton. In .Jour. Amer. Soc. Agron., v. 11, 



p. 299-303. 



1920. Cotton a community crop. In Jour. Heredity, v. 11. p. 174-177. 



Walker, G. B., and Aybes, W. B. 



1921. Cultural experiments with cotton. Miss. Agr. Exp. Sta. Circ. 35. 4 p. 



Anonymous. 



1921. Shall we adopt thick spacing? Farmers give thick spacing a try out. 

 In Progressive Farmer. Raleigh ed.. v. 30. no. 14, p. 1, 7. Also in 

 Ga.-Ala. ed., v. 30, no. 14, p. 1. 7. 



1921. What distance hetween cotton plants? In Okla. Farmer, v. 31, no. 11, 

 p. 5, 15. 



Ulm, Aaron Hardy. 



1921. Plant crowding defeats holl weevil. In Farming, v. 2, p. 41-A4. illus. 



Cates. J. Sidney. 



1922. A revolution in cotton planting. In Country Gentleman, v. 87, no. 7, 



p. 0, 40, illus. 



Knapp, Bradford. 



1922. Production of cotton under boll-weevil conditions. Col. Agr., Univ. 

 Ark. Ext. Serv. Circ. 128. 12 p, 



Bryan, A. B. 



1922. Thick spacing of cotton pays. In Progressive Farmer, Raleigh ed., 

 v. 37, no. 15. p. 6. 



Bishop, George. 



1922. Cotton thick in the row. In Okla. Farmer, v. 32. no. 8, p. 13. 



Brown, H. B. 



1923. Cotton Spacing. Miss. Agr. Exp. Sta. Bui. 212.* 



*This recent publication contains an interesting summary of experimental data on 

 close spacing and emphasizes the importance of not going to extremes in late thinning, 

 which is possible through a misunderstanding of the single-stalk system. The author 

 concludes as follows : 



" We believe that cotton plants should be thinned as early as it is safe to do so — that 

 is, as soon as the danger of losing a stand from cold weather, damping-off fungi, etc.. has 

 passed and before the plants are stunted by undue crowding."' 



This is a tfood statement of the rule that should be followed, since it avoids the other 

 extreme of thinning cotton too early, " as soon as it comes to a stand," which is fre- 

 quently advised. The full advantage of the single-stalk system is not gained if the plants 

 are allowed to become stunted or spindling, as happens with thick stands that are left too 

 long before thinning. Specially delayed thinning is in order only where it is necessary 

 to suppress vegetative branches. 



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