FIELD CROPS. 529 



yields of hay were 7,480, 7,840, 8,800. and 8.3(X) kg. per hectare, respectively. 

 These yields were obtained in 3 cuttings. 



Comparison in field experiments with Westerwold, Argentina, and Italian 

 rye grass, Hiltneb, Lang and Gentnek (Prakt, Bl. Pflanzenbau u. Schiitz, n. 

 ser., 10 {1912), No. 10, pp. 118-12^, fig. i).— The yields in these experiments 

 were with Westerwold 100.5 kg., Argentina 119 kg., and Italian rye grass 128.5 

 kg. per plat, produced in 2 cuttings each. 



The Sansevierias, F. Michotte (Agr. Prat. Paya Chauds, 13 (1913), Nos. 122, 

 pp. 356-375; 123, pp. 455-Jf74, figs. 2).— This paper describes the botanical 

 characteristics of this genus of plants, methods of cultivation and propagation, 

 and the climate and soil to which it is adapted, and mentions* the countries in 

 which it appears. Methods of extracting the fiber by hand and by machinery 

 are described, and the chemical composition, fiber strength, and uses of the 

 fiber are given. 



Bud mutations of tubers as affected by cultural methods with. Solanum 

 tuberosum and S. maglia, E. Heckel (Bui. Soc. Nat. Agr. France, 12 (1912), 

 No. S, pp. 698-716, pi. 1, figs. 3). — This article gives the results of observations 

 on the manner of variations of S. tuherosum and 8. maglia as influenced by 

 cultural methods, especially by the applications of cow, horse, sheep, and hen 

 manure in varying mixtures. 



Sugar-beet growing under irrigation, C. O. Townsend (U. S. Dept. Agr. 

 Farmers' Bui. 567 (1914), pp. 26, figs. 5). — This gives directions for sugar-beet 

 culture under irrigation and discusses, with suggestions, the subjects of selec- 

 tion of soil, climatic conditions, plowing, the seed and root beds, drainage, irri- 

 gation, holding the moisture, planting the seed, spacing and thinning, cultivat- 

 ing, hoeing, harvesting, crop rotation, fertilizers, live stock, and by-products. 



Sugar-beet growing under humid conditions, C. O. Townsend (U. S. Dept. 

 Agr. Farmers' Bui. 568 (1914), pp. 20, figs. 4).— This consists of instructions 

 for the production of sugar beets under humid conditions. 



Fertilizing sugar beets in the drill, 1912, J. Gyarfas (Kis6rlet. Kozlem., 

 16 (1913), No. 3, pp. 367-380, fig. 1).' — ^This reports work in progress in which 

 superphosphate and nitrate of soda, drilled with the seed, seemed to have a 

 beneficial influence on the germination of the seed and development of the 

 young plants. 



Nitrate of soda in the cultivation of sugar beets (Suer. Indig. et Colon., 

 82 (1913), No. 5, pp. 107-109). — One application of nitrate of soda at seeding 

 time gave larger yields of beets of greater density than when part was applied 

 at thinning time. 



Increasing crop production by means of a stimulant, A. Stutzee (Bl. 

 Zuckerriihenhau, 20 (1913), No. 14, PP- 209-211).— The author discusses the 

 plant stimulants and gives the results of applying to sugar beets 4 kg. of lead 

 nitrate in a fertilizer furnishing 50 kg. of P2O5. 80 kg. K2O, and 45 kg. of nitro- 

 gen per hectare. An increased yield of 398 kg. from one field and 171 kg. from 

 another was attributed to the use of the lead nitrate. 



The nitrogen content of beet sugar and of molasses, E. Saillard (Sci. 

 Agron., 30 (1913), No. 1, pp. 27-35). — Tabulated results of nitrogen determina- 

 tions of numerous varieties covering a period of years in a study of the cli- 

 matic effects are given. 



More total nitrogen was found in a dry year than during a wet year. This 

 nitrogen was in ammoniacal and amid forms rather than in the injurious forms, 

 while the increase of albuminoids was less marked than that of the other 

 forms. It is noted that these results coincide with the increase of albuminoids 

 found in wheat in dry years. 



