640 EXPERIMENT STATION EECORD. [Vol. 87 



In variety tests with field peas the Amraoti was first, with an average yield 

 of 39.01 bu. per acre for 1912-1915, inclusive. Other varieties have given satis- 

 factory yields. Field peas sown in rows 21 in. apart and cultivated gave an 

 average yield of 32.49 bu. per acre as compared with an average of 38.98 bu. 

 for peas drilled in. The best results with field peas were secured with one 

 irrigation just before blooming, followed by a second application when the peas 

 were forming. 



In rate-of-seeding tests with different mixtures of field peas and oats the 

 highest average yield, 3.223 tons of cured hay per acre, was secured from a rate 

 of 70 lbs. of peas and 50 lbs. of oats. An estimated net return of $39.68 per 

 acre was secured from " hogging ofE " field peas alone in 1916, while a mixture 

 of three-fourths field peas and one-fourth wheat sown at the rate of 90 lbs. per 

 acre was estimated to give a net return of $45.20. 



Vicia villoia, the White Navy field bean, and the horse bean have proved 

 ■valuable as forage crops. Soy beans and cowpeas have not proved hardy. 



The management of irrig-ated grass pastures, J. S. Welch (IdaJw Sta. BiU. 

 95 {1917), pp. 17, figs. 4). — Results at the Gooding substation previously noted 

 (E. S. R.. 32, p. 628) are reviewed, togetlier with additional data secured from 

 grazing tests and observations during 1915-16. Certain important phases of 

 pasture management under irrigation conditions are emphasized. 



Experiments with small g^rains under irrigation. J. S. Welch {Idaho Sta. 

 Bui. 9S {1917), pp. 24, figs. 5). — The re.sults of variety and irrigation experi- 

 ments with spring and winter wheat and barley and spring oats at the Gooding 

 Bubrtatlon. conducted in cooperation with the Irrigation Investigations of the 

 U. S. Department of Agriculture, are reported for the period of 1909-1916, 

 Inclusive. 



The soft, white, spring wheats are considered best adapted for growth under 

 irrigation. The Dicklow, with a 6-year average yield of 46.1 bu. per acre, was 

 deemed the best spring wheat variety, and Jones Fife and Turkey Red, with 

 2-year average yields of 53.6 and 52.4 bu., respectively, the best winter varie- 

 ties. Although drought-resistant, the durum wheats are not recommended for 

 average irrigation condltiong. 



The irrigation experiments with spring wheat indicated that the highest 

 yields were secured from one irrigation in each of three successive stages of 

 growth and amounted to an average of 43.9 bu. per acre for the perioti of 

 1911-1916, inclusive. One irrigation in the first and second stages each gave 

 an average yield of 43.5 bu., and one irrigation In the first stage only, an aver- 

 age of 33.6 bu. per acre. When irrigation was withheld until the third stage 

 the average yield was 22.7 bu., and it was considered as of no value to the crop. 

 It Is recommended that if but one irrigation can be made It be applied Just be- 

 fore the first Jointing stage of growth. 



Duty-of-watcr experiments with spring wheat from 1910-1916, inclusive, In- 

 dicated that a total application of not more than 1.25 acre-feet of water per 

 acre gave the best results. For winter wheat production one Irrigation of 

 slightly less than 0.75 acre-foot ©f water per acre applied just before heading 

 was deemed sufficient from results secured In tests conducted in the years 1910, 

 1911, and 1912. 



In variety testa with spring barleys Trebi, with 95.5 bu., Beldl No. 1209, 

 with 87.8 bu., and Sendrel, with 82.9 bu. per acre gave the highest yields for 

 the 6-rowed types; Bohemian, with 84.21 bu., and Horn, with 81.65 bu. for the 

 2-rowed types ; and Eureka, with 63.4 bti. for the hull-less type. 



In irrigation tests with spring barley a study was made of the Influence of 

 different sized streams, employing L2, 0.65, and 0.3 cu. ft per second. The 

 testa were conducted during 1915-16, and the average yields were 54.7, 55.9, 



