TESTS OF COEN VARIETIES ON THE GREAT PLAINS. 



17 



Table VI. — Yield of corn varieties grown at Akron, Colo., by plats, at three different 

 rates of planting per hill, for the year 1912. 



Variety. 



Plat 

 No. 



Yield 

 of ears. 



Plat 



No. 



Yield 

 of ears. 



Plat 

 No. 



Yield 

 of ears. 



Plat 

 No. 



Yield 

 of ears. 







2 





1 





3 





9 











1 

 2 

 3 

 4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 



Pounds. 

 39.2 

 40.2 

 30.6 

 47.2 

 32.4 

 26.9 

 36.4 

 42.5 

 33.6 

 30.9 

 33.0 

 39.0 

 34.8 

 32.0 

 34.0 

 30.8 

 38.3 

 42.5 

 41.5 

 43.5 

 33.9 

 45.5 

 38.7 

 27.0 

 34.9 

 40.2 

 35.5 





Pounds. 





Pounds. 



54 

 55 

 56 

 57 

 58 

 59 

 60 

 61 

 62 

 63 

 64 

 65 

 66 

 67 

 68 

 69 

 70 

 71 

 72 

 73 

 74 

 75 

 76 

 77 

 78 

 79 

 80 



Pounds. 

 34.4 













34.3 













34.4 



White Australian (Colo. ) 



28 

 29 



40.4 

 43.0 



41 

 42 



45.3 



48.0 



44.6 

 32.6 





36.2 













31.8 













42.2 













33.4 



Gehu Flint 











33.0 













33.6 





30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 



43.0 

 44.0 

 26.1 

 42.5 

 23.4 

 38.0 

 34.7 

 36.2 

 29.7 

 41.0 

 30.8 



43 

 44 

 45 

 46 

 47 

 48 

 49 

 50 

 51 

 52 

 53 



43.4 

 48.0 

 35.8 

 31.5 

 35.0 

 50.7 

 40.5 

 45.0 

 43.8 

 42.5 

 47.6 



43.0 





30.0 





28.3 





31.0 





30.0 





33.6 





34.9 





32.6 



U. S. Selection 133 



35.0 





35.3 





39.0 





33.0 



IT. S. Selection 160 











24.4 













33.0 



North Platte Calico 











34.5 













27.4 















Summary Showing the Relative Rank and Class of Each Variety. 



Variety. 



Yield per acre 



(bushels). 



Rank. 



Class. 



Variety. 



Yield per acre 



(bushels). 



Rank. 



Class. 



Number of plats 



averaged 



Number of plants 



1 

 1 



2 

 2 



1 

 3 



2 

 2 



2 

 2 



Number of plats 



averaged 



Number of plants 



1 



1 



24.0 

 35.5 

 30.0 

 31.5 



2 

 2 



1 

 3 



2 

 2 



2 

 2 





Minnesota 23 



Minnesota 13 



U.S. Selection 133. 



Golden Glow 



U. S. Selection 160 . 





White Australian 

 CX. Mex.) 



White Australian 

 (Colo.) 



Cassia County 

 Flint 



43.0 



38.0 

 46.5 



32.0 



43.0 

 32.5 

 41.5 



30.5 



46.0 



44.0 

 36.5 



7 



1 



10 

 2 

 9 

 4 



12 



2 



1 



3 

 1 

 3 

 1 



3 



31.0 

 39.5 

 40.0 

 43.0 

 26.0 



38.0 



34.5 



35.5 

 41.0 

 44.5 

 48.5 



11 

 6 

 5 

 3 



13 



7 

 8 



3 



1 

 1 

 1 

 3 



North Platte 







Kiabab Flint 





2 





Swadley (average 







Red Squaw 



44.0 

 26.5 



2 



Brown County 

 Yellow 













SUMMARY OF TESTS. 



Small differences are of importance only when it is certain that 

 guch differences are due to potential varietal qualities and not chance 

 fluctuations. On account of seasonal fluctuations and the difficulty 

 '»f eliminating experimental error, it is not possible from the results 

 of one or- a few lests to determine lo what causes small differences are 

 due. In preliminary and short-time trials only differences of con- 

 siderable amount should be taken into account. These indicate, in a 

 genera] way the comparative adaptability of varieties to the condi- 

 tions of the test. In districts such as the Great Plains area, where 



