THE CORN CROP IN THE UNITED STATES. 



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testing 6 strong kernels, resulted in a decrease of 8.1 per cent, in stand or 

 5.3 bushels yield per acre; at that rate of production what would be the 

 loss to the farmer who plants 10 acres with the weaker seed when corn 

 is 40c per bushel? 



The Seed Tester. 



i. What will be the dimensions of a seed tester that will be 

 large enough to test 100 ears, if 4 square inches are allowed for 

 each 6 kernels per ear? Construct a 200 ear tester, giving di- 

 mensions, allowing 9 square inches for each 6 kernels per ear. 



FIG. 4. The best looking seed corn may contain some bad ears. The seed 

 tester will detect them. 



Time for Maturing. 



Corn must be adapted to the region. Corn that requires 

 120 days in which to mature cannot be successfully raised in a 

 latitude where the growing season is shortened by early frosts. 



In some localities it is not advisable to plant late varieties. 

 Different kinds of corn will vary in time required for maturing 

 from 90 to 1 20 days. 



If corn is planted on May 12, and there is a heavy frost on September 

 5, how many days are there in which the corn can mature? 



