FIELD CROPS. 329 



Corn yielded 25.93 bu. on the Iron County farm in 1904, being the highest 

 yield of any crop grown on that farm during the 3 years. In 190G over 4J tons 

 of fodder were secured on this same farm, but the frost came before the corn 

 matured. On the Washington County farm the highest yield produced in the 3 

 years was 24.7 bu. of ears and 1,936 lbs. of stover in 190(1. 



The following yields of alfalfa were secured on the Jual) farm in 1905: Tur- 

 l<estan 1.500 lbs. of hay, Sand 2,050 lbs., seed from irrigated native crop 2,330 

 lbs., and seed from native dry land croj) 2,300 lbs. On the Iron County farm, 

 where the rainfall was low, plats containing one plant per square foot gave the 

 best yields, (!20 lbs. air-dried hay per acre in 1!X>6. The use of 8 lbs. of seed 

 l)er acre gave tiie best average results. Very little difference was noticeable 

 between early and late spring seeding. The use of the press drill upon a well- 

 prepared seed bed is recommended. 



A number of varieties of grasses have also been tested on these dry land 

 farms. After a good preparation of the seed bed, brome grass at the rate of 

 40 lbs., tall oat grass and orchard grass, each at the rate of 25 lbs., and Giant rye 

 grass and bunch grass, each at the rate of 12 lbs. per acre, were sown about April 

 15, 1904. Orchard grass failed to produce a crop. Brome grass led on the 5 

 farms, with a yield of 1,895 lbs. of hay and 465 lbs. of seed per acre for the 

 Juab County farm in 1906, 1,600 lbs. of hay for the Iron County farm in 1905. 

 1,800 lbs. "for the San Juan farm in 1906, 801 lbs. for the Washington County 

 farm in 1906, and 700 lbs. of hay on both the Sevier and Tooele farms in 1906. 

 Tall oat grass ranked next in yield. Giant rye and bunch grass, two native 

 species, were grown only on the Sevier farm, at an elevation above 7,000 ft. 

 (Mant rye produced per acre 650 lbs. and bunch grass 5.50 llis. of liay in 1906, 

 both outyielding brome grass and tall oat grass. 



The yields of rye on three of the farms varied during the 3 years from 4.52 

 bu. per acre to 20.6 bu. On the San Juan farm emmer yielded 16 bu. per acre 

 in 1905 and 31 bu. in 1906. A yield of 13.5 bu. per acre is recorded for field 

 I)eas, 124 bu. for potatoes, and 3,531 lbs. per acre for turnips. 



The tabulatett results of a plowing test show that the highest yield of wheat 

 nbtained on any of the farms was .32.6 bu. from a plat on the Jual> farm plowed 

 5 in. deep. The highest average yield for 3 years, 21.68 bu., was also obtained 

 from land plowed 5 in. deep, while the highest average yields on the Sevier and 

 Washington County farms, where the precipitation was very light, were 7.19 and 

 7.25 bu., respectively, on land subsoiled 20 in. deep. The advantage from deep 

 l)lowing and subsoiling is apparently dependent upon the season and upon the 

 soil and general climatic conditions of the section in which it is practiced. 

 Where the annual precipitation fell below 12 or 13 in. very low yields were 

 secured even on summer fallow, yet in most instances where the rainfall ex- 

 ceeded 15 in. summer fallow gave the best yields. With reference to the dis- 

 tribution of the rainfall, it is believed that it is almost necessary to have at 

 least 4 in. of the annual jirecipitation during the growing period. 



Dry farming in the Great Basin, C. S. Scofield (U. S. Dcpt. Ayr., Bur. Plant 

 Indus. Bui. 103, pp. J/S, pis. 4, figs. 8). — This bulletin gives a general description 

 of the region, reviews experiments in dry farming as carried on by private par- 

 ties and by the State of Utah on its arid experiment farms, and considers the 

 local conditions which affect dry farming, together with the methods of inter- 

 season tillage and the crops grown. 



Dry farming in the Great Basin is limited at present almost entirely to Utah, 

 where it has been carried on since 1875 and where the practice has been increas- 

 ing rapidly since 1900. In this region the precipitation comes during the autunni, 

 winter, and spring months, while on the dry lands east of the Rocky Mountains 



