SOILS AND FERTILIZERS 387 



In addition to the above methods, the roughening of the surface 

 by proper cultivation really protects the finer soil particles from 

 blowing, as they soon become located in the depressions, where the 

 exposure to the winds is much less. 



The degree of usefulness of these various general methods of 

 control in any particular case depends upon local conditions of soil 

 character, climate, the lay of the land, etc. All of them are in use 

 under various circumstances and in varied combinations. Indeed, 

 most of the practical expedients employed to prevent blowing act in 

 two or three of these ways, frequently leading to both increase of 

 cohesion and decrease of exposure. (Bu. of Soils, Bs. 22, 25, 39, 

 59, 68, 79; Ariz. E. S. B. 28; Univ. 111. Bs. 119, 123; Nevada Univ. 

 B. 39; Miss. E. S. B. 66; F. B. 421.) 



Authorities Consulted. Univ. 111. B. 119 ; Bu. of Soils B. 68 ; 

 F. B. 421; Bu. of Soils B. 59; Bu. of Soils B. 69; Bu. of Soils B. 76; 

 Manitoba Ag. Col. B. 7 ; Bu. of Soils B. 55 ; Bu. of Soils Bs. 32, 51, 

 52; R. I. E. S. Kept. 1905; Mich. Ag. Col. B. 219; F. B. 266; Cornell 

 Univ. B. 120; Bu. of Soils Bs. 50, 38; Univ. Neb. B. 114; Bu. of 

 Soils Bs. 9, 1, 2, 3; Mass. Ag. Col. B. 89; Kans. Ag. Col. B. 68; N. 

 Dak. E. S. B. 48; N. Mex. Ag. Col. Bs. 31, 38, 48, 54, 46; Purdue 

 Univ. B. 46; N. Dak. E. S. B. 35; Univ. Minn. E. S. B. 53; N. Dak. 

 E. S. B. 32; Univ. Minn. B. 89; N. H. E. S. B. 138; Del. Col. B. 65; 

 Miss. E. S. B. 132; Del. Col. B. 66; Kans. Ag. Col. B. 117; Bu. of 

 Soils Bs. 161, 17, 16, 15; Univ. Wis. B. 204; R. I. E. S. B. 68; Tex. 

 E. S. B. 129; F. B. 88; Bu. of Soils B. 35; Univ. Wyo. B. 41; S. 

 Dak. E. S. B. 54; Univ. Calif. Bu. of Soils B. 31; Y. B. 1911; Of. 

 Ex. Sta. B. 106; Cornell Univ. Dept. Soils B. 4; Bu. of Soils Bs. 28, 

 7; Tex. E. S. B. 139; Y. B. 1910; Y. B. 1897; Y. B. 1899; Y. B. 

 1905; Cornell Univ. R. C. Soil Series No. 1; Cornell Univ. R. C. 

 Series 5; Bu. of Soils B. 15; F. B. 87; F. B. 245; F. B. 257; F. B. 

 406; Purdue Univ. B. 95; Purdue Univ. B. 57; Clemson Col. B. 

 32; Univ. Wis. B. 139; Univ. Wis. B. 82; Y. B. 1909; Colo. Ag. 

 Col. B. 65; Cornell Univ. B. 174; Univ. Mo. B. 38; An. Rept. R. I. 

 E. S. 1905; Bu. of Soils B. 22; Univ. 111. B. 82; Bu. of Soils B. 78; 

 Univ. Minn. B. 30; Y. B. 1906; Univ. 111. B. 124; Cornell R. C. 

 Soils Series No. 5 ; Univ. Minn. B. 41 ; Tex. E. S. B. 126 ; Bu. PH. Ind. 

 B. 45; Iowa Col. B. 95; Mich. Ag. Col. B. 7; Mich. Ag. Col. B. 4; 

 Bu. of Soils Bs. 10, 12; Bu. Pit. Ind. B. 201; Of. Ex. Sta. F.I. Lee. No. 

 3; Fla. E. S. B. 93; Univ. 111. B. 110; Ore. E. S. B. 90; Bu. Chem. 

 B. 30; Fla. E. S. B. 83; An. Rept. Del. Ex. Sta. 1899; Univ. Wis. 

 B. 205; F. B. 465; F. B. 366; F. B. 78; Ont, Ag. Col. B. 178; Mich. 

 Ag. Col. B. 181; Bu. of Soils Bs. 25, 30, 32, 33, 35, 40, 38, 39, 27, 

 24, 48, 45, 46, 47, 37, 36, 31, 28, 23, 22, 49, 41, 44, 34, 29; Purdue 

 Univ. B. 33; Univ. Tenn. B. 4; Hawaii E. S. B. 29; F. B. 83; 0. E. 

 S. B. 59; Bu. of Soils Cir. 5; Tex. E. S. B. 61; Bu. of Soils B. 56; 

 Bu. of Soils B. 80; Bu. of Soils Bs. 54, 82; Bu. Pit. Ind. B. 173; 

 Bu. of Soils Bs. 70, 53 ; Univ. 111. B. 145 ; Bu. of Soils Bs. 83, 33 ; R. I. 

 E. S. B. 106; Tex. E. S. B. 129; Tex. E. S. B. 126; Tex. E. S. B. 

 136; Bu. of Soils B. 72; Colo. Ag. Col. B. 160; Ariz. Univ. B. 235; 

 Univ. Ariz. B. 6; Univ. Ariz. B. 28; Univ. Ariz. 10; Colo. Ag. Col. 



