52 



BULLETIN 823, V. S. DEPARTMENT OF AGRICULTURE. 



the best Sixty-Day. The average yield of two strains of Red Alge- 

 rian, one of Burt, and one of Red Rustproof range only from 19.8 to 

 20.6 bushels. 



Table XL. — AnnvMl and average yields of five early yellow and six other varieties of oats 

 grown at the Amarillo ( Tex.) Cereal Field Station during six or more years in the 11-year 

 period from 1906 to 1916, inclusive.^ 



Group and variety. 



Yield per acre (bushels). 



C.I. 



No. 



1906 



1907 



19081909 



1910 



1915 



Average. 



'1906 1911 1907 

 I to -I to I to 

 1916 1916 1915 



Early yellow: 



Sixty-Day 



Sixty-Day selection 4P4 



Seventy-five Day 



Kherson 



Early red: 



Burt 



" Burt selection 



Red Algerian 



Do 



Red Rustproof 



Do 



2 165 21. 1 

 3 165 . 



20. 9 30. 



24. 4132. 



619.7 



5116.3 



337 12. 4 

 459:11.5 



22. 724. 

 15.2,20. 



16. 2 23. 

 10. 3 23. 

 .17. 6 38. 



4 293 13. 3 

 293-VI." ., 

 6 28616.0 

 '28610. 6]20.4 30. 

 4o819.8jl9.3 32. 

 487:.... 14.7 31. 

 i I 



118.1 

 6|19. 1 



416.6 

 4;12.8 

 117.8 

 3il9. 1 



71 9.7 

 917.8 



4.5 

 4.5 



8.0 

 9.3 

 11.4 

 10.9 

 9.0 

 10.1 



8i24. 1 11. 

 7|22.5|10. 

 5|26. 213. 

 0122.811. 

 7j24. 1 6. 



7 21.6116. 

 6120. 9|14. 

 9 26.3 7. 

 3 28.4 8. 



8 25.9'll. 

 6 27.5 8. 



6 28.4 

 0,29. 1 



2'28. 7 

 6l29. 4 

 2129.4 



23.1 

 20.3 

 20.3 

 20.6 

 18.1 



9'40.3'31. 1■ 

 140.0|30.3 



7'41.5'24.9| 

 7 45.0,23.41 

 9 39.4:29.4 

 7 43. 1 24. 7 



i .1 I 

 13.918.9,18.311.2 



I ...... 19.0 



14. 7!.... 19. 3.... 

 11.617.7118.819.0 

 10.816.017.617.1 



I I 



11.919.8 23.4 21.4 



'....!.... 20.2 



7.5 20.6 21.0 22.6 



7.3 20.0 21.5 22.5 



10.0 20.4 22.4 21.7 



8. 9 . . . . 19. 9 20. 6 



1 Data to and including 1911 were previously published in Bur. Plant Indus. Bui. 283 (31). 



2 S. P. I. No. 5938. s Yield from 6-peck rate in rate-of-seeding test. 



3 S. P. I. No. 17720. 6 S. P. I. No. 12133. 

 < S. P. I. No. 15856. ' S. P. I. No. 15858. 



Conclnsions. 



The average yield of the leading variety in each group at the 

 stations included in the southern Great Plains is shown graphically in 



figure 12. 











Fig. 12. — Diagram showing the average yields, in bushels per acre, of 

 the highest yielding variety of each of several groups of oats at two' 

 agricultural experiment stations in the southern Great Plains area 

 during the periods of years indicated. 



The data obtained 

 at both Hays, Kans., 

 and Amarillo, Tex., 

 show that the early 

 red varieties, Burt, 

 Red Rustproof, and 

 Red Algerian, are 

 the best to grow in 

 the southern Great 

 Plains area. While 

 the yields of the Kherson and Sixty-Day have been somewhat lower 

 than those of the Burt and Red Rustproof, they doubtless are the 

 next best varieties to grow. 



RESULTS IN THE WESTERN BASIN AND COAST AREAS. 



The western basin and coast areas include that portion of the 

 United States lying west of the Rocky Mountains. The growing of 

 oats and other small grains in this region is confined mostly to the less 

 arid districts. The results of experiments under irrigation are 

 reported in another section of this bulletin. The principal grain- 



