APPENDIX B 



SCORE CARD FOR INDIVIDUAL EARS OF CORN 



SCALE OF POINTS 



POS- 

 SIBLE 

 SCORE 



POINTS DEFICIENT 



Student's Corrected 



Score 



Score 



1. Variety type. The ear should conform to the general 

 type of the variety to which it belongs, in respect to size 

 and shape of ear, color of kernels and cob, and width, 

 thickness, depth, shape, spacing, and indentation of ker- 

 nels. When variety type is not known, give perfect score 

 on this point - 



2. Maturity and soundness. The ear should be well- 

 matured, dry, firm when twisted, and of good weight for 

 its size and condition. Sappiness, moldiness at the crowns 

 of the kernels and at the cob, looseness of com on cob, 

 chaffiness, adherence of tip caps to cob and of consider- 

 able chaff to the tips, are all indications of immaturity. 

 Decayed, mouse-eaten, and insect-injured kernels are 

 unsound and also indicate a poor seed condition . . . 



3. Purity, (i) Of kernels. Kernels should be free from 

 mixture with corn of other colors. Mixture in yellow 

 corn is shown on the caps of the kernels and in white 

 corn usually on the sides. Deduct one-half point for 

 each kernel distinctly showing undesired color. If in 

 competition, ten or more mixed kernels should bar the 

 ear. (2) Of cob. Cobs in yellow corn usually should be 

 red, the shade of red desired varying with variety ; and 

 in white corn, white. For pink cobs, cut according to 

 shade. A cob of distinctly undesired color, unless a 

 variety characteristic, should be given a score of zero, 

 and if in competition, the ear should be barred .... 



4. Shape of ear. In general a well-shaped ear should 

 (i) be nearly cylindrical; (2) have straight rows running 

 directly from butt to tip ; (3) be full and strong in the 

 middle portion : (4) not be flattened. Such an ear will 

 shell a high percentage of uniformly shaped kernels . . 



5. Size and shape of kernels. Size of kernels includes the 

 depth, width, and thickness. For average corn-belt con- 

 ditions a medium depth of kernel usually produces the 

 largest yield of mature corn. The width, thickness, and 

 shape of kernels vary with varieties. As a general rule, 

 however, they should be keystone-shaped, permitting the 

 edges of the kernels to touch from crown to tip. As to 

 thickness, the kernels should number about six to the 

 inch in the row . 



6. Uniformity of kernels. The kernels should be uniform 

 in depth, width, thickness, and shape throughout the ear. 

 Irregular kernels are objectionable 



7. Size and condition of germs. The germs should be long, 

 wide, thick, smooth, and bright ; not shriveled, blistered, 

 shrunken, moldy, or discolored. The embryo proper 

 should show a fresh, oily, and live appearance and be 

 yellowish-white in color 



