THE CORN CROP IN THE UNITED STATES. in 



PROBLEMS. 



1. How many bushels of corn are there on an acre, that has a stand 

 of 80 per cent, with 12-ounce ears? 



2. How many bushels of ears on an acre with a 90 per cent, stand, 

 averaging one-half pound ear per stalk. 



3. If each stalk averages one ear weighing 4 ounces, and the stand 

 is 60 per cent., what is the yield per acre? 



4. If the average yield in Ohio for ten years was 36.8 bushels, and 

 the stand was about 80 per cent., what was the average weight per ear? 



5. Allowing a farmer $5 per day for 3 days time in selecting seed 

 corn, testing, reading tests, selecting ears after test, what would be the 

 net profit if the yield on 10 acres is increased 20 per cent, in a yield of 32 

 bushels per acre when corn is selling at 40c per bushel? 



6. A farmer planted two acres of corn in a field of uniform 

 fertility ; the corn was all planted at the same time and received the same 

 treatment from the beginning, except that one acre was planted with 

 tested seed and the other was planted with seed that was not tested ; the 

 tested seed yielded 50 bushels, or 25 per cent, more than the untested seed ; 

 what was the yield of the acre planted with untested seed? 



7. If on an average we can produce a one-pound ear on a certain 

 field, and we plant 800 kernels from an ear that is dead, it will be 

 equivalent to a loss of how many bushels? If we plant ten such ears, it 

 will mean a loss of how many dollars, if corn is selling for 50c a bushel? 



Planting. 



In Illinois the Experiment Station has found that for or- 

 dinary corn land in Northern Illinois, it is best to plant corn 

 36 inches apart, with 3 seeds per hill ; in Central Illinois in certain 

 localities it is advisable to plant 30.6 inches apart with 3 seeds 

 per hill, and on certain poor lands it is advised that corn be 

 planted 36 inches apart with only 2 seeds per hill. 



The Georgia Experiment Station reached the conclusions 

 that for upland soils, corn should be planted in rows four feet 

 apart with one plant every two feet; the Indiana Experiment 

 Station obtained best results from rows 3 ft. 8 in. apart with one 

 stalk every n inches. 



In Ohio corn is planted on an average about 42 inches apart 

 in rows both ways across the field. 



