I2O FARM AND SCHOOL PROBLEMS. 



PROBLEMS. 



1. A corn plant performs the remarkable task of pumping into its 

 stem and leaves from a comparatively dry soil, 2.896 pounds of water 

 daily for 13 consecutive days ; how many gallons is this ? 



2. A determination of the moisture content of soil in the spring 

 as late as May 14, proved that late fall plowed ground may contain 

 fully 6 pounds per square foot more water in the upper 4 ft. than 

 similar adjacent ground not plowed; this difference represents how 

 many inches rainfall? 



3. Two immediately adjacent pieces of ground, in every way alike, 

 were plowed in the spring, 7 days apart ; the early plowed ground con- 

 tained, at the time the second piece was plowed, a little more moisture 

 in the upper 4 ft. than it had 7 days before ; while the ground which 

 had not been plowed had lost, in the same interval of time, an amount 

 of moisture from the surface 4 ft. equal to 1.75 inches, a full eighth 

 of the rainfall of the growing season of that locality. What was the 

 total rainfall of the growing season? 



4. According to reports from the U. S. Department of Agriculture, 

 the amount of useless water that goes to market in American corn 

 annually, is 436,682 tons. 



How many freight cars of 30 tons capacity each would be required 

 to carry this amount of water if it were to be separated from the corn 

 .and shipped alone? 



Different Uses and Values of Corn. 



It has been estimated that nine-tenths of the corn crop is 

 fed to live stock. One-tenth is used in manufacturing various 

 products such as corn meal, breakfast foods, hominy, starch, oil, 

 glucose, sugar, syrup, candy, alcohol, and other products. Husks, 

 stalks, pith and cobs are also used for manufacturing certain 

 products. 



When the stalk and leaves of a corn plant are used as fod- 

 der they represent about one-fifth of the value of the corn crop, 

 but when they are used as ensilage they represent about one-third 

 the value of the corn plant. 



From 15 to 2o per cent of the value of fodder is in the leaves. 

 A. large share of the loss sustained in field curing is due to the 

 loss of leaves. When corn is put into the silo there is also a 

 loss of as high as 10 per cent, due to fermentation. 



