DRY-FARMING ZONES 



deemed best to leave the land in the 

 rough furrow to be weathered during the 

 winter storms. These are matters a 

 farmer must judge for himself. In the 

 springtime the land should be harrowed 

 after every rain until the grain has 

 reached a height of three or four inches. 

 This will tend to conserve the moisture 

 and destroy weeds. The practice of 

 alternate cropping and summer fallow- 

 ing is common throughout the Great 

 Plains,^ but it has not given such good 

 results as in the Great Basin, where most 

 of the rain falls during the winter 

 months, and crop rotation, combined with 

 green manuring, has proved a more 

 profitable system. Finally, the intro- 

 duction of drought-resistant crops such 

 as Durum Wheat, Kherson or Sixty- 

 Day Oats and various strains of 



1 In the Great Plains area most of the rain falls during 

 the summer months. 



173 



