528 EXPERIMENT STATION RECORD. 



millet, and potatoes; cultural experiments with wheat, brome and slender wheat 

 grass; and crop rotations carried on duriuj? 1005. in cooperation with this 

 Department. 



[Field crops experiments, 1906], O. A. Thompson and J. H. Sheppekd 

 (North Dakota 8ta., Rpt. Edgelry 8ubsta. 1906, pp. 12-26, pis. 3). — This reports 

 the continuation of variety tests with wheat, oats, barley, emmer, einkorn, and 

 potatoes, and tests of rotation, humus conservation, and moisture conservation 

 methods, carried on in cooperation with this Department in 190G. 



[Field crops experiments, 1907], O. A. Thompson and J. H. Sheppebd 

 (North Dakota Sta., Rpt. Edgclcy Suhsta. 1907, pp. 10-20, 23-37, pis. 6).— This 

 outlines and describes cultural tests with cereals, slender wheat grass, brome 

 grass, alfalfa, and clover, crop rotations, and moisture and humus conserva- 

 tion methods carried out in cooperation with this Department in 1907. Yields 

 are given in variety tests of wheat, oats, barley, and rye. 



[Field crops experiments, 1908—9], O. A. Thompson and J. H. Shepperd 

 (North Dakota Sta., Rpt. Edgeley Buhsta. 1909, pp. 17-52). — This gives results 

 of variety tests with wheat, oats, barley, rye, potatoes, rutabagas, carrots, 

 mangels, sugar beets, corn, millet, rates of seeding millet, wheat, oats, and 

 barley, and cultivation and variety tests with alfalfa, carried on in cooperation 

 with this Department in 190S and 1909. 



[Field crops experiments, 1910], O. A. Thompson and J. H. Sheppebd 

 (North Dakota Sta., Rpt. Edgeley Suhsta. 1910, pp. l-hU, figs. JO).— This gives 

 results of cultural tests with wheat, oats, barley, rye, brome grass, timothy, 

 red, alsike, crimson, and white clover, bluegrass, Canada peas, and Dwarf 

 Essex rape, and variety tests with wheat, oats, barley, potatoes, beets, sugar 

 beets, mangels, carrots, rutabagas, corn, and alfalfa carried on in cooperation 

 with this Department. 



[Field crops experiments, 1911—12], O. A. Thompson and J. H. Shepperd 

 (North Dakota Sta., Rpt. Edgeley Suhsta. 1912, pp. 8, 9, 12-42, 50).— This gives 

 results of work with cultivation methods, cultural tests with wheat, oats, 

 barley, rye, brome grass, slender wheat grass, potatoes, red, alsike, and crimson 

 clover, timothy, Canada peas, and Dwarf Essex rape, a test of formaldehyde 

 for potatoes, and variety tests with wheat, barley, oats, potatoes, beets, man- 

 gels, sugar beets, carrots, rutabagas, flax, corn, millet, and alfalfa carried on in 

 cooperation with this Department. 



[Field crops experiments, 1913], O. A. Thompson and J. H. Shepperd 

 (North Dakota Sta., Rpt. Edgeley Suhsta. 1913, pp. 7-19). — This describes and 

 gives results of some of the work carried on in cooperation with this Depart- 

 ment. 



In variety tests with wheat it is noted that the highest yields of grain 

 produced in each class were 28.3 bu. for the durums, 30.6 bu. for the fifes, and 

 26.9 bu. per acre for the bluestems. Flax yielded from 52 to 54 bu. per acre. 



The results of a test of rate of seeding with wheat, oats, and barley, rang- 

 ing from 2 to 11 pk. per acre, covering the 5 years from 1908-1013, inclusive, 

 showed that " in 1913 the heavier yields conform very closely to the heavier 

 rates of seeding, while in other seasons, with the exception of oats, the heavier 

 yields are associated with an intermediate rate." Dynamiting and subsoiling 

 with wheat, oats, and barley gave doubtful results in 1912 and 1913. 



The results of different methods of preparing land for cereals show, " in 

 1913, the early fall plowed laud produced larger yields than any of the other 

 methods employed. The spring plowed land comes second in the matter of pro- 

 duction and the late fall plowed third. When the four-year average is con- 

 sidered, there appears to be no advantage obtained from packing the land 

 either in the fall or in the spring. A comparison of the average yield of all 



