820 EXPERIMENT STATION RECORD. 



iu whicli seed was inoculated with cultures prepared from root nodules of the 

 gram and planted iu sterilized and unsterilized soil are rei)orted. The benefit 

 of inoculation was marked in the pot experiments but ucjt noticeable iu the field 

 experiments. 



Protection of the soil in Hungary, It. (ioNNARD {Rev. lU-oii. Intcnutt., 5 

 (190S). /r, A'o. 1, pp. 67-98). — This article explains what is beinji done by 

 organization and government suiiervision to protect and improve the soils of 

 Hungary, more particularly by forest management and control of waters. 



Terracing of farm lands, W. W. Ashe (y. C. (icol. and Econ. Hiirrrn Bui. 

 17, pp. 38, pis. 6, figs. ,2). — Tliis bulletin brietly describes the coastal. Piedmont, 

 and moimtain regions of North Carolina and discusses in some detail the value 

 and characteristics of the soils of the Piedmont region, the extent and cause 

 of soil erosion and its effect on the quality of the soil, kinds of soils subject to 

 erosion, and methods of less-eniug erosi<m with particular attention to the value 

 and construction of terraces for this purpose in the Piedmont region of the 

 State. 



The advantages of terracing as a means of preventing erosion are stated to be 

 in brief as follows: A reduction in the cost and labor of maintaining a tillable 

 surface soil which is free from gullies, an increase in general fertility, and a 

 corresponding increase in land values. Particular stress is laid upon the 

 importance of using in connection with terracing a system of cropping and 

 manuring which will increase the humus content of the soil. 



Improvement and management of eastern Virginia lands, W. C. Stubbs 

 {Soutli. Planter, 69 {1!)0H), Xo. JO, pp. 866-869 ) .—The character of the soils of 

 this region and the cultural management to which they have been subjected 

 are discussed. A system of rotation and manuring based upon actual experi- 

 ments on a typical soil of the region is described. This rotation includes first 

 corn, followed by cowpeas or soy beans as a summer crop, wheat as a winter 

 crop, and crimson clover as a spring and summer crop. Acid phosphate is used 

 at the rate of 100 to 200 lbs. per acre with each crop. 



Experiments with fertilizers showed that notwithstanding the fact that the 

 soil had been cropped with tobacco for many years it did not respond to appli- 

 cations of potash fertilizers. Phosphoric acid was evidently the constituent 

 most needed and nitrogen in combination with phosphoric acid gave i)rolitable 

 increase in yield. A sutficient amount of nitrogen, however, is supplied by the 

 leguminous cro])s in the rotation described. 



The study of the phosphoric acid and lime requirements of cultivated 

 soils by means of field experiments on grass lands, P. Liechti (Chem. Ztg., 

 32 (1908), Xo. 8-J, p. 1019).— A report of the results of 3 years' cooperative 

 experiments in different parts of Switzerland is reviewed. The method of 

 organizing and conducting the experiments is also described. Of the single 

 fertilizer elements, phosphoric acid gave the greatest increase in yield of forage. 

 The addition of potash to the phosphoric acid gave a slightly larger increase. 



Fertilizer experiments at the Biological Agricultural Institute of Amani, 

 V. LoMMEL {Pflanzir, h (1908), Xos. 9. pp. 1J,0-1U: 10, pp. I.'i5-160: 11, pp. 161- 

 170). — Pot and field experiments with compost, barnyard manure, and com- 

 mercial fertilizers on coffee, sisal, cotton, cocoanuts, and rubber plants are 

 reported. The coffee did not grow normally in pot (cement cylinder) experi- 

 ments and the field experiments have not yet been carried on long enough to 

 give conclusive results. 



Manuring experiment on flooded (rice) ground, J. E. van der Stok (Teys- 

 mannia, 19 (1908), Xo. 6, pp. 389-399). — This is a comparison of stable manure 



