76 



CORN 



TABLE NO. 16— (Continued) 

 MONTHLY MEAN PRECIPITATION IN IOWA FOR 25 YEARS 



MONTHLY MEAN TEMPERATURE IN IOWA FOR 25 YEARS 



Year 



May 



June 



July 



August 



Average 



1890 . . . 



1891 ... 



1892 ... 



1893 ... 



1894 ... 



1895 ... 



1896 ... 



1897 . . . 



1898 ... 



1899 . . . 



1900 . . . 



1901 . . . 



1902 . . . 



1903 . . . 



1904 ... 



1905 . . . 



1906 . . . 



1907 ... 



1908 .... 



1909 .... 



1910 .... 



1911 .... 



1912 .... 



1913 .... 



1914 .... 

 Average 



08.6 

 66.3 

 66.9 

 68.1 

 71.3 

 68.9 

 70.0 

 68.3 

 68.9 

 69.6 

 70.9 

 72.2 

 67.8 

 67.1 

 60.6 

 68.0 

 68.4 

 66.0 

 67.4 

 68.8 

 67.8 

 71.9 

 68.6 

 70.9 

 71.2 

 68.6 



Of equal or greater importance than the total amount of rainfall 

 is its distribution during the growing season. Corn makes its most 



