16 



BULLETIN 307, TJ. S. DEPARTMENT OP AGRICULTURE. 



Table V. — Yield of corn varieties grown at North Platte, Nebr., on dry land, by plats, 



in 1912 — Continued. 



Summary Showing the Relative Rank and Class of Each Variety. 





Yield per acre 

 (bushels). 



Rank 



(2 

 plats). 



Class 



(2 

 plats). 



Variety. 



Yield per acre 



(bushels). 



Rank 



(2 

 plats). 



Class 



(2 

 plats). 



Variety. 



Actual 



(2 

 plats). 



Cor- 

 rected 



(2 

 plats). 



Actual 

 plats). 



Cor- 

 rected 

 (2 



plats). 





47.0 

 44.5 

 30.0 

 35.0 

 38.5 



42.5 



40.5 



40.5 

 39.5 

 27.5 

 36.0 



41.5 



4S.0 

 45.0 



6 

 7 

 12 

 10 

 5 



1 



3 



2 

 2 

 3 

 3 

 2 



1 



1 



Martens WhiteDent 

 White Australian. . 



Minnesota 13 



U. S. Selection 133. . 



Wisconsin 7 



U.S. Selection 160.. 



Calico (average of 



28 checks) 



44.5 

 38.0 

 42.5 

 42.5 

 38.5 

 39.5 



44.2 



45.5 

 39.5 

 41.5 

 39.5 

 38.5 

 32.5 



44.2 



2 



7 

 5 

 8 

 9 

 11 



4 



1 



Golden Ideal 



Reid Yellow Dent. . 



Local Yellow 



University 3 



Chase County Blue 



2 

 2 

 2 

 3 

 3 



North Platte Silver 



1 







TESTS AT AKRON. 



The results of only one year are available from the station at Akron, 

 Colo. The crop was grown without irrigation. Plantings were made 

 in 1912, 1913, and 1914. In 1913 the crop was so nearly a total failure 

 on account of injury from drought that no yield records were secured. 

 In 1914 a partial crop was developed, but the stands secured were so 

 irregular that the results are not considered worthy of presentation. 



The variety units in 1912 were single-row plats 175 feet long and 

 3 h feet wide, making an area of about one seventy-first of an acre. 

 Plantings were made in hills 3J feet apart at three different rates, 

 one, two, and three per hill. The two-per-hill section was planted 

 in duplicate. The variety rows were alternated with check rows all 

 planted with Swadley corn. 



The yields in pounds of ears for each plat are shown in Table VI. 

 The yields in bushels per acre and the rank and class of each variety 

 are shown in the summary. 



The highest yields were secured from the thickest plantings. The 

 lowest yield was secured from the one-per-hill rate and the highest 

 yield from the three-per-hill rate. The yield at the two-per-hill 

 rate was intermediate between the other two rates, but nearer the 

 yield from the three-per-hill rate. It should be borne in mind 

 that this season was more favorable than normal, and the results 

 obtained should not be interpreted as indicating that stands of 

 three stalks per hill will produce best in average years. Rates 

 thicker than two stalks per hill with the hills 3J feet apart each way 

 are not recommended for dry-land plantings. There is less differ- 

 ence between the yields from different rates of varieties which sucker 

 profusely than between rates of nonsuckering varieties. The White 

 Australian and Red Squaw produce a large number of suckers, 

 while the dent varieties produce but few. 



