FIELD CROPS. 833 



consumed by cake-fed sheep. The cake-fed sheep received chaff and equal parts 

 of linsee<l and undecorticated cotton cake, while the gi*ain-fed sheep received 

 eliaff and equal parts of barley and oats in addition to the swedes. 



In a test of nitrogenous top dressings supplying the amount of. nitrogen con- 

 tained in 1 cwt. of sulphate of ammonia, a wheat yield of 1,240 lbs. followed 

 nitrate of soda as compared with 1,02(5 lbs. after nitrate of lime, 1,010 lbs. on 

 the check plat, 959 lbs. after sulphate of ammonia, l.OGl lbs. after calcium 

 cyanamid, 1.174 lbs. after a mixture of equal parts of nitrate of lime and 

 cyanamid, and 1,078 lbs. after a mixture of one part of nitrate of lime and two 

 parts of cyanamid. The author regards the mixing of these two materials as 

 distinctly satisfactory. 



In a test of alfalfa varieties designated as American (Arizona), North 

 American, Canadian, Turkestan, Provence, Russian (Europe), and Russian 

 (Asia), "the two that stood out undoubtedly the best were the two American 

 varieties." -^ 



The cost per acre of hoeing, thinning, and harvesting sugar beets planted 

 12, 15, and 18 in. apart was SGs. 6<1.. 70s. 6d., and 58s., respectively, as com- 

 pared with 24s. 6d. in case of mangels planted 24 in. apart. The yields in 

 the same order were 21 tons 1 cwt.. 22 tons 13 cwt., 23 tons 15 cwt., and 44 

 tons 4 cwt. 



Although the conclusions are deemed only tentative, it appeared that Buxton 

 lime and chalk lime excelled lias, oolite, and magnesian limes for grass. 



Report of Hedemarken County Experiment Station, 1911, W. Christie 

 (Her. Ilcdciiiarkens Amis Faraoks.stat. Virks., 7 (1911), pp. 50, pjH. 2, figs. 2). — 

 Tests of potato varieties, planting potatoes of dilferent degrees of maturity, 

 fall growth of potatoes, and changes occurring after harvest, dates of sowing 

 winter rye. and the use of Thomas phosphate, nitrate of soda, and kainit as 

 top-drossing for meadows are included in this report. The work on meadows 

 and winter rye has extended over a period of years. 



[Field crops at the Roseworthy Agricultural College], A. J. Perkins and 

 W. J. Spafford {Jour. Dept. Agr. So. Aust., I4 (1911), Nos. 10, pp. 959-967; 

 11, pp. 1030-1037; 12, pp. 11/,1-1154; 15 (1911), Nos. 1, pp. 10-25; 2, pp. 112- 

 119).— This is the fourth report (E. S. R., 23, p. 535). Meteorological data 

 and a .general discussion of 6 yeai's' results are followed by a statement of the 

 results obtained in 1909-10 and 1910-11. 



Rotation tests were conducted to determine whether or not local farming 

 was possible except under the bare fallowing system now practiced. When 

 wheat was grown continuously the yield fell from 29 bu. 19 lbs. per acre the 

 first year to 9 bu. 15 lbs. the second year, and 3 bu. 53 lbs. the third year. In 

 the second and third years these yields were 11 and 12 bu., respectively, below 

 the averages of those secured after bare fallow. The hay yields were about 

 a ton below the averages on the bare fallow plats during each of the 2 years. 

 In a 2 years' test comparing bare fallow with (1) a turnip, barley, pea, wheat, 

 and (2) a kale, oat, vetch, v/heat rotation, the advantage in grain yield on the 

 bare fallow was more than sufficient to pay the rental costs of idle land. 

 During other years this difference was insufficient, and in one case the differ- 

 ence was nearly 3 bu. in favor of wheat grown in rotation. In hay yields the 

 wheat grown in rotation averaged much better than that grown after bare 

 fallow. In another rotation the returns of wheat after sorghum did not 

 approach those secured from wheat after bare fallow. The authors conclude 

 that under the conditions during these tests a year of bare fallow is not essen- 

 tial in growing wheat for either hay or grain. 



In the turnip, barley, pea, wheat, rotation during 4 yeai's, the turnips main- 

 tained the equivalent of 3.16 sheep per acre for an entire year. Similarly an 



