FIELD CROPS. 41 



Lime-sulphur injurious to potatoes, F. H. Hall (2Vcw York State Sta. Bui. 

 397, popular ed. {1915), pp. 2, fig. 1), — A popular edition of the above. 



Sudan grass, B. Youngblood and A. B. Conner {Texas Sta. Bui. 112 {1915), 

 pp. 28, pi. 1, figs. 7). — This bulletin gives directions for the production of bay 

 and seed from Sudan grass in Texas.- Experiments indicate that to obtain 

 the best results in bay production seeding should be done from April 15 to 

 May 1 in cultivated rows not more than IS in. apart and with not less than 

 7 lbs. of seed per acre, or in close drilled rows with from 15 to 40 lbs. per 

 acre. The selection and breeding of the various types of Sudan grass are being 

 carried out at the station. 



In experiments for methods to follow in seed production it is shown that 

 Sudan grass should be planted in cultivated I'ows only far enough apart to 

 allow easy cultivation, sowing from 14 to 22 lbs. per acre. 



Seed yields reported from the various substations range from 110 to 1,026 

 lbs. per acre. The percentage of seed to whole plant ranged from 10.4 to 23.7, 

 with an average of 16.7 per cent in five tests. 



A map shows regions in Texas where dependable seed crops of Sudan grass 

 can and can not be grown. 



Turnips as a stock food, C. D. Woods {Maine Sta. Bui. 236 {1915), pp. 

 54-57). — In a cooperative field trial the average yield was 782 bu. per acre and 

 the estimated cost $59.05, or 7.6 cts. per bushel. It is concluded that rutabagas 

 may be successfully grown to replace silage when it seems desirable to do so, 

 although a ton of digestible dry matter can pi-obably be grown cheaper per 

 ton as corn. 



The quality of home-grown versus imported wheat, R. Stewart and C. T. 

 HiBST {Utah Sta. Bui. 137 {1915), pp. 63-76).— This bulletin gives results of 

 tests with about twenty varieties of wheat. Analyses show the protein content 

 of imported seed and home-grown grain, the yields and protein contents of 

 flour, bran, and shorts, dry and moist gluten in the flour, expressed in per- 

 centages; ratio of wet to dry gluten; and the relation between the protein 

 content of the wheat and the rainfall during the growing season. 



The authors summarize the work, which covers a period from 1908 to 1912, 

 inclusive, as follows: "As an average of five years' work it may be safely 

 concluded that dry-farm wheat grown in Utah from imported seed does not 

 decrease in quality. The five-year average protein content of the home-grown 

 seed differs only by 0.1 per cent from that of the original seed, i. e., the pro- 

 tein content of the home-grown seed has remained practically constant, being 

 influenced only by the varying climatic conditions from year to year. The five- 

 year average result for the protein content of the wheat grown from the im- 

 ported seed is 2.23 per cent greater than that of the original imported seed. 

 Every variety of imported seed produced wheat the first year it was grown in 

 Utah having a higher protein content than the original seed. In no year during 

 the five-year period has any variety produced seed having as low a protein con- 

 tent as the original imported seed. . . . 



" The practice of shipping in seed wheat is entirely unnecessary and waste- 

 ful. The quality of the home-grown hard wheats is really superior to the 

 original seed. Good pure wheat seed should be selected of the kind the grower 

 desires to raise. He should then continue to raise his own seed, and with 

 proper selection he may rest assured that the quality of the seed will not 

 become inferior, but he may have every confidence that his wheat is of superior 

 quality." 



Yellow-berry in wheat, its cause and prevention, W. P. Headden {Colorado 

 Sta. Bui. 205 {1915), pp. 3-38, pi. 1). — The author reviews in detail i)revious 



