FIELD CROPS. 739 



lated yields of grain and straw aud ttie weight per bushel of the grain are 

 included. The yields reached as high as 90 bu. per acre, weighing 42 lbs. per 

 bushel. 



Spontaneous omission of the color factor in oats, H. Nilsson-Ehle ( Ver- 

 handl. IVaturf. Ver. Briinn, 49 (1910), pp. 139-156, figs. j^). — This paper consists 

 of discussions of the origin of individuals with varying w^hite or gray colored 

 glumes in black varieties, as previously noted (E. S. R., 25, p. 333). 



Place-efEect influence on seed potatoes, W. Stuart {Verviont Sta. Bui. 112, 

 pp. 109-216). — Seed tubers from England, Scotland, and Maryland were planted 

 in Vermont in the 6 seasons from 1905 to 1910 inclusive, and the yields com- 

 pared in charts aud tables. 



The author concludes " that northern-grown seed is superior to that grown 

 in the south. The effect of one year's removal of the potato from northern in- 

 fluence is generally noticeable, and after this period the decline in yield is quite 

 rapid. After a 6 years' removal from southern influence the southern seed 

 almost, if not quite, equalled that from the north when tested under similar 

 environment ; and, except in northern latitudes and under favorable growing 

 conditions, an occasional, if not a frequent, change of seed is desirable." 



Cultural experiments with dried sug'ar beet seed in Hung'ary, B. Jancs6 

 (Osterr. Ungar. Ztchr. Zuckerindas. u. Landw.. Jfl {1912), No. 5, pp. 691- 

 697). — This paper reports the results of trials with 2 varieties of beets sown in 

 30 different localities. One-half of the seeds planted were previously dried at 

 45° C, vmtil the original 14 to 15 per cent of water was reduced to 6 and 8 per 

 cent. 



The germination of the seeds was improved by drying. From 100 balls of 

 one variety, not dried. S3 germinated, and after drying, 87 germinated. Of the 

 other variety 91 germinated before drying and 96 after. The results in the field 

 were contradictory and varied greatly. 



Annual report of the bureau of sugar experiment stations, H. T. Easterby 

 {Ann. Rpt. Bur. Sugar Expt. Stas. [Queetisland], 1912, pp. 27). — This report 

 gives the results of acclimatization trials of varieties of cane from Queensland, 

 Barbados, and Mauritius, and the results of variety tests. 



The sugar industry of Natal, E. R. Saweb (In Cedara Memoirs on South 

 African A-griculiurc. PietermaritzMirg : Govt., 1912, vol. 3, pp. 1-142, pis. 8). — 

 This report includes the history of the industry, a discussion of its present 

 status, the results of experiments, and both physical and chemical analyses of 

 soils. 



In an experiment to determine the best distance of planting cane the highest 

 yields from 4 crops were obtained by continuous planting In the row with a 

 spacing of 6 ft. between the rows. Tabulated results of variety tests with a 

 description of seedling varieties are given. In manurial experiments it was 

 found that on the whole the crops were better off without nitrogenous manures. 

 The data showed uniformly that manuring without phosphates is of no practical 

 value, and that superphosphate seemed to be the best form of phosphatic 

 manure. The best yield was secured by a combination of potash with super- 

 phosphate. In general, it is stated that potash and lime had a satisfactory 

 influence on the composition of the juice. Methods of harvesting and rattooning 

 and for the manufacture of sugar are given in detail. 



Notes on the germination of tobacco seed, T. H. Goodspeed ( Univ. Cal. Pubs. 

 Bot., 5 {1913). No. 5, pp. 199-222). — This paper gives the results of germination 

 tests of over 20,000 seeds produced from single plants of 10 species and varieties 

 of Nicotiana and from single plants representing the original hybrid seed and 

 the Fi and F- generations in the case of 2 hybrids made between 2 N. tabacum 

 varieties. 



20793°— 14 4 



