FIELD CHOPS. 133 



stated that this rye grass has a forage value arising from productiveness, early 

 ripening, and abundance of digestible carbohydrates. 



Sulla (Hedysarum coronarium) {Agr. Gaz. N. S. Wales, 22 {1911), No. 5, p. 

 45^). — A report of the results of tests of a special strain of sulla seed selected 

 for many years. The seed was tested on 3 experiment farms. 



Breeding experiments with tobacco, J. A. Lodewijks (Ztschr. Induktive 

 Abstam. u. Vcrerbungslelire, 5 {1911), No. 4-5, pp. 2S5-323). — Statistical studies 

 were made for 2 years of tobacco bred along pure lines. 



The results indicated that the relation between the average value of the 

 number, length, and width of leaves of different pure lines of this plant, under 

 different conditions of growth, is constant provided these conditions of growth 

 are the same for all lines at any one time. It is pointed out that these results 

 represent illustrations of a law which may be deduced from Johannsen's discov- 

 ery and Weber's law, which states that the relation between the average values 

 of similar characters of different pure lines is constant under different condi- 

 tions of growth if these conditions are the same for all lines concerned. 



A note upon the method of applying fertilizers for the tobacco crop, G. N. 

 Blackshaw (Rhodesia Agr. Jour., 8 {1911), No. 6, pp. 901, 902). — The govern- 

 ment chemist reports good results from the use of a single-row fertilizer drill 

 provided the fertilizer is dry and the lumps well broken down. " The tobacco 

 plants set out on the land thus treated seemed to strike more quickly and grow 

 more evenly than on that fertilized by hand, which is a decided advantage." 



The manuring of tobacco on Mr. L. Black's farm, " Stapleford," Salisbury, 

 G. N. Blackshaw {Rhodesia Agr. Jour., 8 {1911), No. 6, pp. 894-000).— Tables 

 state in detail the data secured in experiments designed to determine the effect 

 of supplying a single element, a complete fertilizer, a fertilizer deficient in one 

 ingredient, and various proprietary fertilizers. Kraal manure was also tested. 



The author urges care in accepting the conclusions as they are based on one 

 season's work. It appeared that fertilizers containing only nitrogen or potash 

 affected tobacco yield little if any but that superphosphate mai-kedly increased 

 the yield. The best returns and highest quality on the virgin soil used followed 

 an application of a complete fertilizer with a high proportion of phosphoric 

 acid. 



A progress report upon soil and climatic factors influencing the composi- 

 tion of wheat, G. W. Shaw and E. H. Walters {California Sta. Bui. 216, pp. 

 549-574, fig. 1). — The author summarizes previous work along this line and 

 gives numerous references to the literature of the subject, many of which have 

 already been noted, in particular the work of Le Clerc and Leavitt (E. S. R., 

 22, p. 730). 



The authors point out that a part at least of the earlier work on the composi- 

 tion of wheat was done in the presence of two variable factors, soil and climate. 

 In the present work soil from Kansas was transported to California that the 

 chemical composition of wheat grown on the two under uniform climatic con- 

 ditions might be studied. On one end of each plat was grown a high gluten 

 Turkey Red wheat previously grown on Kansas soil, while on the other end was 

 planted a low protein California-grown durum wheat. The author describes 

 the soils used, reports their mechanical and chemical analyses, and the analyses 

 of the wheats grown. At harvest time the durum wheat gave a somewhat 

 greater yield on the Kansas soil. 



The tabulated results presented do not show that the soil produced any 

 marked effect ou the gluten content of the wheat. The low protein seed in 

 1907-8 produced a crop with about 4.5 per cent higher protein content than the 

 seed used, indicating a marked seasonal change, but the difference in protein 

 contents of the crops grown on the two soils was " entirely within the range of 



