530 EXPEEIMEN^ STATION EECOED. 



phosphate and J cwt. of sulphate of potash, and (2) 2i cwt. of superphosphate, 

 than in case of other applications of nitrate of soda, superphosphate, sulphate 

 of potash, basic slag, and dung singly or in various mixtures and amounts. 



Tables state the yields secured in tests of 19 wheat varieties or strains, 2 of 

 barley, 13 of oats, 12 of sugar beets, and 51 of potatoes. 



In a test of 8 different fertilizers an application of 550 lbs. of superphosphate 

 produced a 3-years' average yield of about 1 bu. less barley than did 4 cwt. 

 of potassic sui>erphosphate, at the same expense. Four cwt. of potassic super- 

 phosphate applied with 84 lbs. sulphate of ammonia, 130 lbs. nitrate of lime, and 

 112 lbs. nitrate of soda each supplying the same amount of nitrogen were fol- 

 lowed by average yields of 494, 50i, and 48 bu. per acre, respectively. All other 

 applications in this test were surpassed in grain yield by the use of 2 mixtures 

 of kainit, sui>erphosphate, and sulphate of ammonia. 



Sugar beets sown in rows 15 in. apart on level ground produced somewhat 

 greater yields than those sown in rows 18 or 21 in. apart. They also slightly 

 excelled plantings 21 in. and 24 in. apart on ridges. In another test seeding at 

 the rate of 20 lbs. per acre produced slightly greater yields than seeding at the 

 rates of 10 and 15 lbs. i)er acre. In a test of applications of sulphate of am- 

 monia, superphosphate, sulphate of potash, and nitrate of soda, in 7 different 

 mixtures no marked difference in yield was obtained, but the highest yield 

 followed an application of 150 lbs. sulphate of ammonia, 368 lbs. superphosphate, 

 G4 lbs. sulphate of potash, and 100 lbs. nitrate of soda. 



The records kept indicate that mangels cost £10 13s. 5d. per acre to produce 

 and yielded 43 tons 8 cwt. of roots as compared with £12 8s. 8d. for sugar beets 

 which yielded 20 tons 9 t-wt. of roots. A table states the average weight per 

 root and the sucrose and dry matter contents of the roots grown in the method 

 of sowing, rate of seeding, and fertilizer tests. In a test of 10 compound 

 manures for mangels the higliest yield followed the use of 5 cwt. of a mixture 

 which supplied 11.2 lbs. of nitrogen, G7.2 lbs. of soluble phosphates, 44.8 lbs. of 

 insoluble phosphates, and 28 Jbs. of potash per acre. The addition of 2 per 

 cent of a radioactive fertilizer to a mixture of steamed bone, sulphite of 

 potash, and nitr|xte of soda was followed by a yield of 33 tons 13 cwt. of 

 mangels as compared with 29 tons 11 cwt. on the check. A similar 2 per cent 

 addition to another mixture apparently increased the yield of swedes from 12 

 tons 18^ cwt. to 15 tons 11^ cwt. 



Fertilizer experiments on gi-ass plats at Rlurton and other centers are 

 again reported with results varying somewhat from those of previous years. 



Other work reported includes tests of sulphate of ammonia, superphosphate, 

 dissolved bone, sulphate of potash, carbonate of magnesia, nitrate of lime, 

 basic slag, kainit, and salt in various mixtures for potatoes, mangels, and sugar 

 beets in different localities. 



Field experiments in 1910, N. Tulaikov {Kratkn Ofchet Polev. Opyt. Bczen- 

 chuk. Sclsk. Khoz. Opytn. Stantsil, 1910; ahs in Zliur. Opytn. Agron. {Russ. 

 Jour. Expt. Landw.), 12 (1911), No. Ji, pp. 571, 572).— This is a report of the 

 work of the Bezenchuk Agricultural Experiment Station in 1910. It states the 

 results of tests of various fertilizers and various systems of fallows for winter 

 rye. Somewhat similar work was done with summer oats and barley. Rates 

 and methods of sowing summer cereals were tested, and variety tests of wheat, 

 oats, millet, potatoes, and sugar beets were conducted. 



Plowing 7 in. deep was followed by higher yields of winter cereals than were 

 obtained by plowing either 3^ or 10 in. deep. In case of summer cereals the 

 best results were obtained by early plowing 7 in. deep, or by late shallow plow- 

 ing. The potatoes were apparently not influenced by the depth of plowing. 



The most favorable area per corn plant appeared to be 336 sq. in. 



