234 AGRONOMY [Box. Absts., Vol. VII, 



1577. Shepherd, A. N. Fanners' experiment plots. Lucerne top-dressing trials, 

 1919-20. Murrumbidgee irrigation areas. Agric. Gaz. New South Wales 31: 609-616. 3 fig. 

 1920. — Results indicate that lucerne responds profitably to increased care in culture. Profits 

 resulted from using superphosphate as a top dressing. — L. R. Waldron. 



1578. Slate, William L. Jr., and Benjamin A. Brown. Fertilizers for potatoes. Storrs 

 [Connecticut] Agric. Exp. Sta. Bull. 106. 39-48. 1920.— During 4 years (1915-1918) varying 

 amounts of potash, phosphoric acid, and ammonia have been applied to potatoes. As much as 

 80 pounds of potash per acre has given profitable increases in yield. Manuring the land the 

 previous year has not reduced the need of potash. It appears that 10O-120 pounds of phos- 

 phoric acid per acre are sufficient. Fields not recently manured need 100 pounds of ammonia 

 per acre; this may be reduced where manure has been used recently. — Henry Dorsey. 



1579. Spafford, W. J. Agricultural experiments — linseed for seed. Jour. Dept. Agric. 

 South Australia 23 : 754-756. 1920. 



1580. Spafford, W. J. Experimental farms harvest reports, Turretfield. Jour. Dept. 

 Agric. South Australia 23 : 13-29. 1920. — A report of the 1919 harvest with statistical data 

 comparing the grain and forage crops with the rainfall during a series of years. The results 

 of wheat varieties in fertilizer, rotation, and cultural tests are similarly compared. — Anthony 

 Berg. 



1581. Spafford, W. J., and E. A, Bristow. Experimental farm harvest reports, Boob- 

 orowie. Jour. Dept. Agric. South Australia 23 : 907-914, 1020-1030. 1920.— Yield report of 

 grain crops from variety, cultural, and fertilizer experimental tests. The data in most cases 

 are given in statistical form, comparing yields and the rainfall through a series of years. — 

 Anthony Berg. 



1582. Spafford, W. J. Agricultural experiments. — Report for year 1919-20. Jour. Dept. 

 Agric. South Australia 23 : 593-602. 1920. — The results of experiments conducted at Ham- 

 mond, Butler, Wilkawatt, and Yelanna, and dealing with cultivation methods relating to 

 dry farming, including wheat variety trials, rotation, and fertilizer tests. — Anthony Berg. 



1583. Spragg, Frank A. The spread of Rosen rye. Jour. Heredity 11: 42-44. 1 fig. 

 1920. — A brief account of the spread of Rosen rye, as shown by the number of bushels from 

 Michigan sold to the various states for seed. — J. H. Beaumont. 



1584. Taylor, E. P. Uniformity of rules and regulations of potato seed certification. 

 Monthly Bull. California State Commission Hort. 8: 280-285. 1919. 



1585. Thoms, Hermann. Uber Lupinenverwertung. [Utilization of lupines.] Jahresber. 

 Ver. Angew. Bot. 16:33-60. 1918. 



1586. Thorne, C. E. Palatable sirup from sugar beets. Monthly Bull. Ohio Agric. Exp. 

 Sta. 5:294. 1920. 



1587. Trowbridge, P. F. Report of Langdon Substation, 1914 to 1919. North Dakota 

 Agric. Exp. Sta. Bull. 134. 31 p., 8 fig. 1920. — The data presented were secured by E. D. 

 Stewart, superintendent of the substation until his death. Wheat after corn and wheat after 

 clean fallow yielded the same. The corn crop was not generally successful. — In fertilizer 

 studies, barnyard manure alone and with minerals increased wheat yields from 2.4 to 4.6 

 bushels per acre over the check yield of 20.5. Green manure (field peas) used with minerals 

 was less successful. — Yields of grain were larger upon the deeply plowed plats. — Sunflowers 

 outyielded maize 710 pounds per acre, or 27 per cent, in air-dry material. Slender wheat- 

 grass, Agropyron tenerum, was found valuable for alkali land. — Upon the average, for 11 years, 

 Kubanka durum has outyielded all other varieties of wheat. Yields of varieties of oats, 

 barley, and potatoes are given. — L. R. Waldron. 



