CHOP ROTATION COMPARED WITH CONTINUOUS CROPPING. 



37 



Table XVII. — Yield of oats, in bushels per acre, in nine 3-year rotations compared with 



continuous cropping. 



Station. 



Year. 



No 1 I No - 2 - 



fife 



plowed- s ? rhl S 



corn 

 fall 

 plowed. 



Judith Basin, Mont. . 

 Dickinson, N. Dak. . . 



Do 



Edgeley, N. Dak 



Do 



Do 



Highmore, S. Dak. . . 



Do 



Do 



Bellefourche, S. Dak. 

 North Platte, Nebr.. 



Do 



Do 



Akron, Colo 



Hays, Kans 



Garden City, Kans. . . 



Dalhart, Tex 



Amarillo, Tex 



Do 



Average 



Average from continuous crop- 

 Ping 



Gain per acre by rotation com- 

 pared with continuous crop- 

 Ping 



19C8 

 1909 

 1907 

 1908 

 1909 

 1906 

 1907 

 1908 

 1909 

 1907 



1908 

 1909 

 1909 

 1908 

 1909 



plowed, 

 corn 

 spring 

 plowed. 



Bush. 

 68.1 

 35.3 

 64.4 

 25.9 

 26.3 

 64.0 

 45.3 

 46-9 

 28.8 

 55.6 

 26.9 

 60.3 



23.1 

 25.6 

 28.5 

 3.0 

 .0 

 28.1 

 10.0 



35.06 

 30.16 



4.90 



Bush. 

 63.1 

 52.5 

 60.6 

 29.7 

 20.6 

 63.7 

 38.9 

 41.6 

 36.9 

 42.5 

 32.3 

 36-9 

 28.1 

 18.3 

 26.0 

 1.3 



.0 

 23.4 



.0 



32. 44 

 30.16 



No. 3. 

 Wheat 



fall 

 plowed, 



oats 



fall 

 plowed, 

 corn 



fall 

 plowed. 



Bush. 

 61.5 

 38.9 

 62.5 

 30.5 

 16.9 



a 66. 5 

 47.2 

 45.3 

 29.7 

 53.6 

 30.6 

 60.3 

 18.3 

 18.8 

 20.1 

 .0 

 .0 

 27.5 

 17.8 



34.00 

 30.16 



No. 4. 



Oats 

 disked, 

 wheat 



fall 

 plowed 



corn 



fall 

 plowed 



Bush. 



a 74.1 

 a 67. 2 

 72.5 

 28.8 

 23.4 

 03. 7 

 61-6 

 48.4 

 35.6 

 75.0 

 40.6 

 54.3 

 22.5 

 21.3 

 16.0 

 2.9 

 .0 

 22.8 

 .0 



38.46 

 30.16 



8.30 



No. 5. 



Wheat 

 fallow, 



oats 



fall 

 plowed, 

 fallow. 



No. 6. 

 Barley 

 disked, 

 oats 

 fall 

 plowed, 

 corn 

 fall 

 plowed. 



No. 7. 



Oats 

 spring 



plowed, 

 barley 

 spring 



plowed, 

 corn 

 spring 



plowed. 



Bush. 

 67.1 

 39.4 

 63.8 

 27.5 



a 33. 4 

 63.7 

 46.6 

 55.0 

 27.8 

 51.6 

 31.2 

 54.7 

 19.1 

 16.7 

 22.8 

 3.3 

 .0 

 24.4 

 15.3 



34.92 

 30.16 



Bush. 

 57.8 

 44.7 

 61.9 



a 32. 5 

 15.9 

 60.3 

 53.8 

 49.4 

 36.3 

 65.6 

 23.1 

 49.1 

 19.7 

 20.8 



a 35. 5 

 3.1 

 .0 

 31.3 

 .0 



34.78 

 30.16 



Bush. 

 74.0 

 60.9 

 70.3 

 24.8 

 24.7 

 60.9 

 57.5 

 43.8 

 40.0 

 58.8 

 35.7 

 60.3 



a 35.0 

 25.6 

 15.2 

 3.8 

 .0 

 21.3 

 .0 



37.5a 

 30.16 



7.34 



Station. 



Year. 



No. 8. 

 Oats on 



fallow, 



wheat 



fall 

 plowed, 



fallow. 



No. 9. 

 Oats 



spring 

 plowed, 



wheat 



spring 

 plowed, 

 corn 



spring 

 plowed. 



Average 

 yield. 



Yield 

 from con- 

 tinuous 

 cropping. 



Average of all 

 ro tations 

 c o mpared 

 with con- 

 tinuous crop- 

 ping. 



Gain. Loss 



Judith Basin, Mont. . 

 Dickinson, N. Dak. . . 



Do 



Edgeley, N. Dak 



Do 



Do 



Highmore, S. Dak... 



Do 



Do 



Bellefourche, S. Dak. 

 North Platte, Nebr.. 



Do 



Do 



Akron, Colo 



Hays, Kans 



Garden City, Kans. . 



Dalhart, Tex 



Amarillo, Tex 



Do 



1907 

 1908 

 1909 

 1906 

 1907 

 1908 

 1909 

 1907 

 1908 

 1909 

 1909 

 1908 

 1909 

 1909 

 1908 

 1909 



Bush. 

 66.2 

 60.9 

 a 74. 7 

 30.9 

 20.9 

 56.2 

 a 83. 4 

 a 57. 8 

 a 46.6 

 a 85. 2 

 a 40.9 

 a91.5 



a 28. 3 

 28.8 

 a5.8 

 a 10.0 

 a 33. 4 

 a 25. 6 



70.7 

 50.6 

 71.3 



5.6 

 16.9 

 58.7 

 56.9 

 47.5 

 41.6 

 62.2 

 33.4 

 48.2 

 27.5 

 17.5 

 19.1 



2.3 

 .0 

 22.5 

 .0 



Average from continuous crop- 

 Ping 



44.58 

 30.16 



34.34 

 30.16 



Gain per acre by rotation com- 

 pared with continuous crop- 

 Ping 



4.18 



Bush. 

 65.8 

 50.0 

 66.9 

 26.2 

 22.1 

 62.0 

 54.6 

 48.4 

 35.9 

 61.1 

 32.7 

 59.6 

 21.5 

 21.4 

 23.5 

 2.8 

 1.1 

 26.1 

 7.7 



Bush. 

 75.3 

 48.4 

 55.9 

 21.3 

 16.9 

 • 57.5 



Bush. 



Bush. 



1.4 

 11.0 

 4.9 

 5.2 

 4.5 



45.3 

 34.4 

 48.8 

 30.0 

 34.4 

 31.3 

 21.1 

 1.3 

 1.0 

 .0 

 20.0 

 .0 



3.1 

 1.5 



12.3 

 2.7 



25.1 



.3 

 21.2 

 1.8 

 1.0 

 6.1 

 7.7 



36.27 

 30.16 



187 



a Rotation giving the best yield of oats. 



