112 



CORN CROPS 



Morrow and Gardner's experiments in 1892 at the Illi- 

 nois Agricultural Experiment Station, illustrates : ^ — 



TABLE XVIII 



VARIETy 



Burr's White . 

 Cranberry .... 



Average . . . 



Cross .... 



Burr's White . 

 Helm's Improved 



Average . . . 



Cross .... 



Leaming .... 

 Golden Beauty 



Average . 



Cross .... 



Champion White Pearl 

 Leaming .... 



Average . . . 



Cross .... 



Burr's White . . . 

 Edmonds .... 



Average . 



Cross .... 



Bushels of 

 Air-dry Corn 



64.2 

 61.6 

 62.9 

 67.1 



64.2 

 79.2 

 71.7 

 73.1 



73.6 

 65.1 

 69.3 



86.2 



60.6 

 73.6 

 67.1 

 76.2 



64.2 



58.4 

 61.3 



78.5 



The average yield of hybrids in the five tests was 9.7 

 bushels above the average of the parents and 4.5 bushels 

 above the average of the highest parents. It is also 

 shown, by this and other data, that certain crosses give 



1 lU. Agr. Exp. Sta., Bui. 25. 1902. 



