242 EXPERIMENT STATION RECORD. [Vol 40 



/, pp. S6SS). —Fertilizer tests with sugar cane conducted during 1016 are 

 noted. 



An application of 450 lbs. of sulphate of ammonia per acre resulted in 28.3 

 tons of cane, as compared whh 16.8 tons without nitrogen. A comparison of 

 sulphate of ammonia and nitrate of soda at rates supplying 60 lbs. of nitrogen 

 per acre showed respective yields of 25.8 and 22.8 tons per acre. Acid phos- 

 phate alone was followed by 17.2 tons of cane as against 10.S tons from the 

 check and 24.9 tons with nitrogen, as compared with 25.4 tuns from nitrogen 

 alone. Additional tests of acid phosphate and basic slag showed yields without 

 nitrogen of 18.1 tons for the check, 19.8 tons for add phosphate, and 21.1 tons 

 for basic slag, as compared with yields with nitrogen amounting to 23*6, -3.1, 

 and 25.4 tons per acre, respectively. In a comparison of sulphate of ammonia, 

 nitrate of soda, and a so-calew " animal-products manure," In which the mate- 

 rials were applied in quantities supplying 60 lbs. of nitrogen each per acre, 

 yields were obtained amounting to "..">. 7. 84, and '■'•-.- tons of cane per acre, 

 respectively, as against 2 - from the untreated check. A comparison was 



also made of sulphate of ammonia, nltrolim, and animal-products manure ap- 

 plied in amounts representing equal monetary values, the yields amounting 

 to 41.8, 42.2, and 33.2 tons per acre, as against 29.9 tons from the untreated 

 check. 



[Report of field crops work in British Guiana. 1916], J. B. Hakkison (l\'pt. 



Dept. Boi. and Agr. Brit. Quiana, 1916, in>- 6- 19). — This n rts the results of 



variety tests and hybridization Btudies with sugar cane and variety tests with 

 rice, in continuation of similar work previously noted (B. s. It.. .".>. p. 229), 

 together with a brief summary Of 'be fertilizer experiments described above. 



A new forage plant, F. 1'.. LlNFIKLD (lour. Heredity, 9 {1918), A". ■•'. pp. 135- 

 1SS, jigs. 3).- — The growing of Russian sunflowers in Montana is briefly de- 

 scribed. Yields of forage have varied from 25 to SO ton- per acre with the 

 plants sown in rows 30 in. apart, the plants standing 9 to 12 ft. high. The 

 crop is .-aid to be as well I corn by dairy and beef <uttle, either as a 



Soiling crop or as silage 



A prospective new forage plant for the irrigated mountain valleys of the 

 Northwest, F. B. Limiki.d {Proc. Boa fin,,,. Agr. BcL, 88 (1917), pp. S4-S6).— 

 This briefly presents some of the data noted above. 



Sunflower stems from Rhodesia (Bui. Imp. Inst. [So. Kensington}, 15 (1017), 

 No. 3, pp. 829-334). — Analyses of the pith of the Bunflower for the manufacture 

 of pith helmets and as a source of cellulose, and of the pith and entire stem for 

 paper making, Indicated that these products were not ca|iahie of competing with 

 other raw materials already in use. The ash of the stems, constituting 10.7 per 

 cent of the total weight and containing 49.6 per cent potash, is recommended 

 as a source of crude potash or as a rich potash manure 



Sweet clover on corn belt farms, J. A. Dkakk and J. C. ElUNDLBS (U. S. Dept. 

 Aff>:, Farmers' Bui. 1005 (1919). pp. 28, figs. 9).— The details of management and 

 the more important farm practices followed in growing sweet clover on suc- 

 cessful corn-belt farms, as one of the principal crops of the rotation and as a 

 catch crop for soil improvement, are described. Cropping systems for different 

 types of farms are outlined, and the necessity of liming, inoculating, and scarify- 

 ing the seed Is emphasized, it is stated that the crop has proved excellent for 



bay and pasture, is unequaled by any other Legume for soil improvment. may 

 be used to good advantage for silage, is frequently a profitable seed crop if 

 properly managed, and mixed with blue grass makes a pasture with nearly 



double the carrying capacity of blue grass alone. 



Tobacco seed beds. II. W. Taylob [Union Bo. Africa, />- i>t. Vgr. Bui. 7 {1917), 

 pp. 12. figs. 3). — Approved methods of preparation and management of the 



