552 EXPERIMENT STATION RECORD. 



The fixation of nitrogen in clay soils by the growth of leguminous catch 

 crops, M. Maercker (Braunschweig Landw. ZUj., 65 (1897), Xo. 41, pp. 179, 180). — 

 A report on experiments, with tabulated results. 



Influence of a top dressing of nitrate of soda on poor stands of oats, F. 

 LUBANSKY ( Zcmledyelie, 1897, pp. 199, 200, 225, 226). — Experiments carried out iu 1895 

 aud 1896 proved that nitrate of soda applied at the rate of 60 lbs. per acre is au 

 effective remedy for improving poor stands of oats. — P. fireman. 



Potatoes, B. C. BuFFUM ( Wyoming Sta. Iipt. 1897, pp. 70, j>ls. 3). — A reprint of 

 Bulletin 32 of the station (E. S. R,, 9, p. 239). 



Potato breeding, F. Spiegel (Deuf. Landw. Presse, 24 (1897), No: 93, p. 845). — 

 The origin of a new variety of potatoes known as Daber's Elite is given by the 

 originator. 



Varieties of potatoes, W. Paulsen (T)eut. Landw. Presse, 24 (1897), Xo. 92, p. 

 833). — A report on variety tests of potatoes. The average yields for 5 years, the per- 

 centage of starch, and the amount of starch produced per hectare are given in tables. 



Harvesting and storing potatoes (Ztschr. Landw. Yer. Eheinpreussen, 14 (1897), 

 No. 41, pp. 363, 364). 



Rotation experiment, J. R. Campbell (Glasgow and West of Scotland Tech. Col., 

 Agr. Dept. Bpts. 1896, pp. 43-47). — The experiment is described and the results are 

 tabulated. This was the first year of the experiment. 



Fertilizer experiments -with potatoes (Dent. Landw. Presse, 24 (1897), No. 83, 

 p. 763). — Comparisons were made of ammoniated superphosphate aud guano and 

 Thomas slag and nitrate of soda as fertilizers for potatoes. On a sandy soil ammo- 

 niated superphosphate was but slightly more effective than guano, but on heavy 

 clay soil the difference iu yield in its favor was more marked. The results of apply- 

 ing Thomas slag alone and with nitrate of soda were considerably in favor of the 

 mixture. 



Amount of nitrogen, phosphoric acid, and potash in peas and bean.?, E. H. 

 Jenkins (Connecticut State Sta. Itpt. 1S96, p. 334). — Analyses show that a certain 

 crop of peas removed from au acre 47.8 lbs. of nitrogen, 13.1 lbs. of phosphoric acid, 

 and 12.7 lbs. of potash, and a certain crop of beans 56.2 lbs. of nitrogen, 13.5 lbs. of 

 phosphoric acid, and 22 lbs. of potash. The beans took about the same amount of 

 phosphoric acid as the peas, but 9 lbs. more each of nitrogen aud of potash. 



The injurious effect on rye of the perchlorates in nitrates, B. S.tollema 

 (Ann. Agron., 23 (1897), Xo. 7, pp. 328, 329). — Abstracted from an article already 

 noted (E. S. R., 8, p. 762) with note by P. P. Deheraiu suggesting that chlorates may 

 be formed from chlorids by microorganisms as bromates have been shown to be from 

 broniids by Muntz (Ann. Chim. et PJu/s., 6. ser., 11, p. 111). 



New experiences and observations in sugar-beet culture, Hollrung (Braun- 

 schweig Landw. Ztg., 45 (1897), Xo. 42, p. 183). 



Main points in sugar-beet culture, Tiiomsgen {Ztschr. Landw. Ver. Hessen, 1897, 

 No. 43, p. 390). 



Timothy in the prairie region, T. A. Williams ( TJ. S. Dept. Agr. Yearbook 1896, 

 pp. 147-154, Jigs. ..'). — The reasons for the failures of timothy growing in the prairie 

 region are pointed out and the methods of preparing seed and treating timothy 

 meadows to secure a successful growth are stated. The method of growing timothy 

 for seed and a comparison of analyses of eastern and western grown hay is given. 



Improvements in wheat culture, M. A. Carleton ( U. S. Dept. Agr. Yearbook 1896, 

 pp. 489-498, Jigs. /). — The article treats of the method of tillage, time of seeding, 

 selection of varieties, cross breeding, selection of seed, and of the 2 most important 

 diseases — the smuts and rusts. Special promiueuce is given to the selection of 

 varieties. 



The author recommends the extension of the hard-wheat territory in the United 

 States and the further trial of " the finest class of bread wheat in the world" which 

 are grown in southeast Russia under "conditions very similar to those which prevail 

 in our own wheat belt.'* 



