154 DRY FARMING 



7. Fall plowing, harrowing, packing and harrowing in 

 fall. 



8. Spring plowing and harrowing. 



9. Spring plowing, harrowing and packing. 



10. Spring plowing, packing and planking. 



The usual treatment after seeding is to pack or har- 

 row or both. 



127. Results of Some Tillage Experiments at the Uni- 

 versity of Saskatchewan. — On the investigation field at 



rig. 62. — Typical Scene at a Plowing Match. 



the University of Saskatchewan wheat stubble was tilled 

 in from sixteen to fifty different ways during each of 

 five years and the average yields ranged from 11 5^ to 

 23^ bushels. In some seasons the range between the 

 lowest and highest yield was 30 bushels per acre. 



As a result of carefully observing the climate and soil 

 conditions and of keeping an accurate record of the be- 

 havior and yield of the crops in seasons of different 

 character during a period of nine years, we have learned 

 that many unfavorable conditions in stubble fields can 



