BULLETIX 307, U. S. DEPARTMENT OF AGRICULTURE. 



The discussion of adaptations of varieties given in the following list 

 applies only to that section of the north-central Plains shown as a 

 dotted area in figure 1 : 



U. " S: Selection 160. — Kernels light yellow; depth medium shallow; hard, and but 

 .slightly dented; cob white; ear surface smooth. Seed secured from central Cali- 

 fornia. This variety 

 is not adapted to this 

 section. 

 Calico. — The corns of this 

 name are extensively 

 grown in this section. 

 There are many vari- 

 ations in color, hard- 

 ness, size and shape 

 of ear, and length of 

 time required to ma- 

 ture. All are charac- 

 terized by red stripes 

 on the seed coat or 

 hull of the kernel, 

 but the color associ- 

 ated with this may 

 be either white or yel- 

 low. Mixed cob col- 

 ors predominate, but 

 white and red cobs 

 occur. Two strains 

 are given below. 

 (a) North Platte Cal- 

 ico . — Kernel color 

 medium-; depth me- 

 dium to shallow; 

 somewhat flinty; sur- 

 face, medium to 

 smooth. Grown at 

 North Platte Experi- 

 ment Substation for 

 several years, where 

 some attention has 

 been given to its se- 

 lection to reduce 

 sucker production 

 and to increase yield. 

 This corn has been 

 used as a standard for the variety tests conducted at North Platte and has been 

 outyielded there in but few instances. It will mature in the southeastern part of 

 this section. 

 (6) Mitchell Calico. — Similar to North Platte Calico except that it is about 10 days 

 earlier in maturity and suckers somewhat more. This corn has been grown under 

 irrigation for several years on the Scottsbluff, Nebr., Experiment Farm. It is 

 adapted to similar conditions. 

 Silver King, or Wisconsin 7. — Kernels white, medium to deep, inclined to starchiness; 

 cob white; ear surface rough. Seed secured from Wisconsin. Will mature in the 

 southeastern part of this territory. 



Fig. 2.— Ears of corn of U. S. Selection 133. 



