CLIMATE FOR ^L\IZE 



«o3 



maize becomes commercially successfuL The absence of any 

 one may limit successful production. If, for example, the area 

 between the 70^ and 80° July isotherm be followed around the 

 world in the northern latitude, it will be found that throughout 

 the larger part of its course the rainfall is insuflQcient at those 

 times of the year when it is most needed by the maize plant; 



< U < L < ^ ^ => UJ O O liJ 



26-8 IN. 





TUSCOLA 



55-9 IN- 



MIDDLE GERMANY 22-2 IN • 

 4.iN. 



2IN. 



lOIi 





COLUMBUS JS9 IN. 



SOUTHEAST RUSSIA 15.41N 



UUl 



lulUIUlU 



Variation in amount and distribution of normal monthly rainfail, see map (276). For 



May. June, July and August, total normal rainfall is: Lincoln, Nebraska, 15.7 inches; 

 Tuscora, rilinois, 1 4.4 inches; Columbus, Ohio, 13.2 inches; Western England, 10.7 

 inches: Middfe Germany, 8.6 inches; Southeast Russia, 7.2 inches.l The great 

 maize belt lies between the longitudes of Columbus, Ohio (83" 0' W. Long.), and 

 Lincoln, Nebraska (96^ 45' W. Long.). 



or, where the rainfall is sufficient, physiographical features pre 

 vent the cultiure of maize on a large scale. 



The so-calkd " com belt " of the United States appears to 

 have the best combination of temperature, sunshine, rainfall, 

 soil and topography for the production of maize of any consid- 

 erable area in the world. 



I Rainfalls for Lincoln, Tuscola and Columbus are from twenty-five-year 

 averages of the United States Weather Bureau. The European figures are from 

 Da\'is' Elementary Meteorology. 



