portion of kernel to hull, weigh 100 representative grains. Then hull them 

 and weigh the kernels. For each per cent which the weight of kernel lacks of 

 being 70% of the whole, a deduction of two points should be made, and for 

 each per cent above 70, one point should be added to the total score. 



WEIGHT PER BUSHEL. Characteristics which indicate heavy weight per 

 bushel are: (1) Medium-sized grains; (2) plump kernels; (3) thin, close- 

 fitting, short hulls without awns. The weight of a bushel should be 32 Ib. 

 For each pound short of the standard, deduct one and one-half points from the 

 perfect score. For each pound above the standard, add three-fourths of a 

 point to the total score. 



EXERCISE No. 20 



SCORE CARD FOR WHEAT 



Use 100 grains for sample. 



Explanation 



UNIFORMITY OF TYPE. Spring wheat grains are shorter, stubbier, and 

 usually have more angular grooves than those of the hard winter varieties. 

 The grains should be characteristic of the variety, as shown by the size, shape, 

 and color, and should also be uniform in these respects. Color refers to 

 the natural hue, as white, light red, or amber; hence discoloration of grains due 

 to weathering should not be discriminated against under the heading uniform- 

 ity. Deduct one point from the perfect score for each four per cent of non- 

 uniform grains in the sample. 



FREEDOM FROM FOREIGN MATTER. Foreign matter includes every thing 

 in the sample that is not wheat: (1) Weed seeds; (2) foreign grains; (3) inert 



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