220 SOIL SCIENCE [Box. Absts., Vol. VIII, 



FERTILITY STUDIES 



151S. AxoNTMors. [Rev. of: Xewmax. L. F., axd H. A. D. Xevtlle, A course of 

 practical chemistry for agricultural students. Vol.1. 235 p. Cambridge Universitv Press: 

 1920.] Sci. Prog. [London] 15:321-322. 1920. 



1519. Bexxett, Hugh H. The soils and agriculture of the Southern States. 15X80 em., 

 599 p., 54 pi., 6 maps (1 colored). The Macmillan Company: Xew York, 1921. — The im- 

 portant agricultiiral lands of the southern portion of the L'nited States are described. The 

 various soil types occurring are described and crops best suited for their growth discussed. 

 The soil provinces are grouped into (1) the Atlantic and Gulf coastal plains. (2) the Piedmont 

 plateau, (3) the Appalachian Mountain province. ;4:) the limestone valleys and uplands, 

 (5) Mississippi bluffs and silt loam uplands, (6) the Great Plains region, (7) central prairie 

 region, and (S) the stream bottom and second bottom soils. The fertilization of the various 

 soil types for specific crops is discussed. In Appendix A the definition of a soil is given to- 

 gether with a classification of soil material by te-vture. In Appendix B tables are given 

 showing the results of chemical analyses of some representative soils from widely separated 

 localities in the Southern States. In Appendix C a list of publications on soils, soil physics, 

 soil chemistry, soil management, crops, and livestock is given. In Appendix D statistics 

 are given bearing on some of the important farm products of the Southern States. — /. J. 

 Skinner. 



1520. Co\rBEK. XoEMAX M. A qualitatlTe test for sour soils. Jour. Agric. Sci. 10: 420- 

 424. 1920. — A method is described whereby soils which are acid in nature and for which a 

 lime requirement is indicated can be tested qualitatively. Solutions from such soils when 

 treated with an alcoholic or ether-alcohol solution of potassium thiocyanate produce a colora- 

 tion varying from an opaque red to pink, which indicates the formation of ferric thiocyanate. 

 This method was tested out on a comparatively large number of acid soils with the residt 

 just described. — V. H. Young. 



1521. Ellett. W. B.. axd T. K. Wolfe. The relation of fertilizers to Hessian fly injury 

 and winterkilling of wheat. Jour. Amer. Soc. Agron. 13: 12-14. 1921. — In Virginia when 

 acid phosphate or manure is used, the Hessian fly injury is smaller and the yield greater than 

 when manure is not used or when floats are applied in place of acid phosphate — Fly injury 

 ranges from 4.79 per cent in the manure-acid phosphate plot to 2S.96 per cent in the buck- 

 wheat-floats-lime plot. The manure plot suffered 10.&4 per cent fly injury, which was next 

 to the lowest. Manure has greatly prevented winter killings, as shown by yields. PLCsults 

 show that the element most needed to increase jdelds and decrease the amount of winter- 

 killing is phosphorus. Practically all Virginia soils are deficient in phosphorus and that ele- 

 ment must be supplied before material increases can be secured. — P. M. Schertz. 



1522. Haetvtzll, Burt L., axd S. C. Damox. Six years e^)erience in improving a light 

 unproductive soU. Jour. Amer. Soc. Agron. 13:37-41. 1921. — A Warwick sandy loam in 

 Rhode Island was used. To increase productivity liming and fertilization with phosphate 

 should be first considered. Legumes are beneficial for collecting nitrogen and increasmg 

 humus. — F. M. Schertz. 



1523. Jexkixs. E. H., axd W.L. Slate. Jb. Concerning the use of fertilizers. Connect- 

 icut [New Haven] Agric. Exp. Sta. and Storrs Agric. Exp. Sta. Joint Bull. 4. 5 p. 1921. — 

 This paper gives some general principles that may govern the use of fertilizers. Special sug- 

 gestions are given for the use and purchase of mixed fertilizers and chemicals together with 

 suggetions for applications on mowings, potatoes, com. tobacco, orchards, and gardens. 

 Facts for calculating formulae are given. The publication is intended for general use. — 

 Henry Dorsey. 



1524. Lepmax, C. B., axd G. A. Lls-habt. A critical study of fertilizer experiments 

 Proc. Nation. Acad. Sci. 6 : 6S4r-686. 1920. — A preliminary report on a statistical study of the 



