ZEA 183 



Reference to page 117 shows that the water requirement 

 of corn stands between that of sorghum and wheat. There 

 is a significant difference in the water requirement of the 

 varieties of corn, indicating that some may be more drought- 

 resistant than others. Corn is being raised with profit on 

 the dry lands of the West. 



There is a close correlation between the yield of corn and 

 the rainfall for June and July. The critical month is July. 

 Smith says that the most critical ten-day period for corn, in 

 Ohio, is from August i to 10, the period following blossoming, 

 when the weather must be wet and moderately cool. 



In the corn districts west of the 95th meridian, hot winds 

 sometimes prove fatal to corn. These winds are particularly 

 harmful during the critical periods of "tasseling" and 

 "silking." 



Corn thrives best in a well-drained, medium loam soil, such 

 as is found in the river bottoms of the Mississippi Valley. It 

 will grow on soils so rich in nitrogen as to cause the lodging 

 of the small grains. 



Uses of Com. — No other cereal is put to such a variety of 

 uses as is corn. • Some economical use has been found for 

 nearly every part of the plant. There are numerous manu- 

 factured corn products and by-products. Corn meal, both 

 yellow and white, is one of the chief forms in which the grain 

 is used as a food for man. Whole meal includes the embryo, 

 endosperm and hull, while new process meal has the embryo 

 and hull removed. Other forms in which corn as a human 

 food is used are: hominy, green corn, canned corn, corn oil, 

 corn flakes, pop corn, starch, and glucose. The sweet corn 

 canning industry is a large one. Corn starch from which 

 the protein and mineral matter have been removed by treat- 

 ment with dilute alkaline solutions gives a flour which is used 

 largely in the preparation of puddings, blanc manges, etc. 



