62 



BULLETIlJir 823, U. S. DEPARTMENT OF AGEICULTUEE. 



The results shown in Table L decidedly favor the midseason and 

 late varieties for growing under irrigated conditions similar to those 

 at NeweU. Of the four varieties under experiment during the full 

 6-year period the White Russian leads with an average jdeld of 45.8 

 bushels, as compared with 36.5 bushels for the Sixty-Day, a difference 

 of nearly 10 bushels. In the 4-year period from 1914 to 1917, inclu- 

 sive, the White Russian and a local variety similar to Swedish 

 Select lead with average yields of 49.9 and 49.4 bushels, respectively^ 

 as compared with an average of 36.7 bushels for the Sixty-Day during 

 the same period. 



Results under Irrigation in Montana. 



The average yields of the Kherson, the Sixty-Day, and eight other 

 varieties of oats grown under irrigation at the Montana Agricultural 

 Experiment Station at Bozeman (2) in the 5-year period from 1907 

 to 1911, inclusive, are shown in Table LI. 



Table LI. — Average 'fields of the Kherson, the Sixty-Day, and eight other varieties of oats 

 grown under irrigation at the Montana Agricultural Experiment Station (at Bozeman) 

 during the 5-year period from 1907 to 1911, inclusive. 



[Data compiled from Montana Agricultural Experiment Station Bulletin 84 (2).] 



Group and variety. 



Yield 

 per acre. 



Group and variety. 



Yield 

 per acre. 



Early yellow: 



Sixty-Day 



Bushels. 

 73.9 

 82.0 



70.9 



102.3 

 100.0 



Midseason white— Continued. 



Siberian. 



Busheh. 

 98.3 







97.9 



Early white: 



Late white (side): 



93.1 





Tartar King 



90.0 



Banner 



White Tartar 



80.2 



DfiTiish 











Reference to Table LI shows that both the midseason and the late 

 varieties have materially outyielded the Sixty-Day and Kherson at 

 Bozeman on irrigated land. Banner, the highest yielding midseason 

 oat, has exceeded the Klierson and the Sixty-Day in average yield 

 by about 20 and 30 bushels, respectively, during the 5-year period. 

 As indicated by these results, it is usually more profitable to grow the 

 midseason and late varieties under conditions similar to those at 

 Bozeman, unless for some reason an early-maturing oat is required. 



In a recent publication (3, p. 166-167) the Montana Agricultural 

 Experiment Station reports that Ontario A. C. No. 72, a selection 

 from Siberian imported from Canada, yields best under irrigation. 

 During the past four years it has averaged 119.4 bushels per acre. 

 Other varieties showing high average yields under irrigation were 

 Myrick, Silvermine, Belyak, and Banner with yields of 114.9, 113.9, 

 110.1, and 109.6 bushels per acre, respectively. 



