FIELD CROPS. 533 



crown gall, Pboma disease, stem rot, dodder, and such weeds as Johnson grass, 

 Hormuda grass, wall barley, water grasses, dock and canaigre, pigweed, sour 

 clover, and bur clover. 



The bulletin terminates in tables taken from several sources, showing the 

 composition of alfalfa and the commercial grades of the hay. 



Hairy vetch for the cotton belt, C. V. Piper ([/. S. Dept. Agr., Office Sec. 

 Spec. [Circ.], Idllf, Dec. 15, pp. //, fig. 1). — Brief notes on methods of production. 



Winter oats in the cotton belt, C. W. Warburton (t/. S. Dcpt. Agr., Office 

 Sec. Spec. [Circ], 1914, Nov. 21, pp. 4). — Brief notes on methods of production. 



Rape as a forage crop in the cotton belt, C. V. Piper {JJ. S. Dept. Agr., 

 Office Sec. Spec. [Circ], 191Jf, Dec. 15, pp. 3). — Brief notes on methods of pro- 

 duction and uses. 



Eye in the cotton belt, C. E. Leigiity {U. S. Dept. Agr., Office Sec. Spec. 

 \Cire.]. I'Jl.'f, Dec. 2, pp. 4). — Brief notes on methods of production. 



Sorghum for forage in the cotton belt, H. N. Vinaix (C7. S. Dept. Agr., 

 Office Sec. Spec. [Circ], 1914, Dec. 23, pp. 4). — Brief notes on methods of pro- 

 duction and uses of sorghum and Sudan grass. 



Soy beans in the cotton belt, W. J. Morse ( U. S. Dept. Agr., Office Sec. Spec. 

 [Circ], 1915, Jan. 12, pp. 6). — This discusses methods of production and uses. 



Trials with, sweet clover as a field crop in South Dakota, A. N. Hume and 

 M. Champlin (South Dakota Sta. Bui. 151 {1914), pp. 3-20, figs. 6).— This 

 bulletin gives a brief description of sweet clover, the possibilities in its use, and 

 results of tests in South Dakota. Sweet clover sown in corn in August is noted 

 as yielding 3.6 tons of hay in two cuttings the next year and O.S tons of hay 

 and a seed crop of 5.9 bu. per acre the second year. Sweet clover sown in April 

 in fall wheat is noted as being successful. 



Letters are quoted from farmers of South Dakota who have produced sweet 

 clover successfully. Data of rainfall for varying periods from 1905 for four 

 localities of the State are given. 



Winter wheat in the cotton belt, C. E. Leighty {U. S. Dept. Agr., Office 

 Sec. Spec. [Circ], 1914, Noi\ 21, pp. 6). — Brief notes on methods of production. 



Winter wheat, A. Atkinson and J. B. Nelson (ilontana Sta. Bui. 100 {1914), 

 pp. 141-160, figs. 4). — This bulletin notes Turkey Red and Kharkov varieties of 

 wheat as being most commonly grown in Montana. In several years' tests on 

 demonstration farms the former averaged 25.6 bu. per acre. As a 5-year aver- 

 age at the Fergus County substation the Kharkov variety is noted as yielding 

 35.2 bu. and Turkey red 32.S bu. per acre. In rate-of-seeding tests, from 3 to 4 

 pk. are noted as giving the best results. The time-of-seeding tests showed that 

 August and early September seedings were the most satisfactory. 



"Harrowing winter wheat in the spring reduced the yield in nearly every 

 case. Rolling in the spring increased the yield in the tests conducted. Spring 

 harrowing of winter wheat reduced the stand 19.4 per cent when compared with 

 the wheat not harrowed. The unharrowed wheat produced an average of 4.5 

 heads per plant and the harrowed wheat 4.3 heads per plant. Wheat drilled in 

 between the rows of standing corn gave a fair yield, and it is probable that this 

 method of seeding will be very generally adopted as the area devoted to corn- 

 growing increases." 



The continuous growing of wheat and rye, 1913, J. G. Lipman et al. (JVew 

 Jersey Stas. Bui. 268 {1914), pp. 19-21, pi. 1; Rpt. 1913, pp. 471-473, pi. i).— 

 This reports the continuation of work previously noted (E. S. R., 30. p. 325). 

 The plan of the experiment has not been modified, and the results are similar 

 to those of 1911 and 1912, showing that even a leguminous crop which has not 

 attained full development may add enough humus and nitrogen to the soil to 



