82 INDIAN CORN CULTURE. 



yield.* Of seven comparisons all but one were 

 very much adverse to pruning. 



At the Minnesota station Prof. W. M. Hays 

 found f that the root-pruned plats averaged 

 nearly three bushels of corn and 800 lbs. of 

 fodder less per acre than the plats not root- 

 pruned. Another year root-pruning was found 

 to diminish the yield of grain 13^ bushels per 

 acre. 



A number of years of comparison of root- 

 pruned with unpruned corn at the Illinois sta- 

 tion, by Prof. G. E. Morrow, has shown a gee- 

 eral injury from the root-pruning. J In 1893 

 the yield per acre was 100.3 bu. for the un- 

 pruned as against 78.8 bu. for the pruned — a 

 very material difference. 



The above results show the necessity for 

 •shallow cultivation and the injurious results of 

 breaking off the surface corn roots. Set the 

 cultivator so that the teeth will run shallow. 

 The weeds may be easily destroyed by cultivat- 

 ing at a depth of about an inch if the work is 

 done in reasonable season. 



*New York agricultural experiment station. Report for 

 1883, p. 134. 



t Bulletins Nos. 6 and 11, Minnesota agricultural experi- 

 ment station. 



t Bulletin No. 31, March, 1894, Illinois agricultural exper- 

 iment station, p. 357. 



