84 



INDIAN CORN CULTURE. 



foot or mouse's ear." There is considerable 

 significance in this in fact, as the oak is tardy 

 in showing its leaves until 

 the ground has had its spring 

 warming. Corn not only re- 

 quires a warm air tempera- 

 ture to grow well in, but 

 the soil must be reasonably 

 warm. A temperature of 

 the soil to a depth of one 

 inch of from 50 to 60 deg. 

 Fahr. will justify planting. 

 'In the great corn belt plant- 

 ing begins about May 1 and 

 often extends over the en- 

 tire month. If the ground 

 is ready it is not wise to 

 hurry the seed into the 

 ground too soon, as the vi- 

 tality of the seed or young 

 plant may be seriously im- 

 paired by being exposed to 

 cold rains which often fol- 

 low stretches of warm April 

 weather. The fo llowing 

 table shows the results of 



early and late planting con- 



ducted by Prof. Latta at the Purdue University 

 exper iment station* The experiment began 



*nulletin No. 50, p. 45, Purdue University affricultural 

 experiment station. ' * v.«uu»»i 



