WHEAT 57 



Fig. 15. The Dunham sub-surface packer. 



a beneficial effect and aided in preventing soil 

 drifting. 



SHALLOW FURROW CULTIVATION 



On the same farm in the spring of 1912, I 

 stopped the soil from drifting on a newly seeded 

 alfalfa field 120 acres in area, by cultivating the 

 drifting area with a twelve shovel two-row corn 

 cultivator, cultivating across the wind, beginning 

 on the side towards the wind. The drifting was 

 stopped early in the day, with a loss of about 

 seven acres of alfalfa, whereas if nothing had been 

 done to check it, the drifting would have extended 

 over the larger part of the field during the day. 

 The middle shovel of each gang of three in the 

 cultivator was removed. This left the soil in 

 furrows and ridges. 



By the same method I have protected the sur- 

 face of a bare summer fallow by running shallow 

 furrows east and west across the field. One 

 hundred-eighty acres cultivated in this way late 

 in the fall of 1911 did not drift during the winter 

 and was put into good condition for seeding 

 alfalfa the next spring by a single cross harrowing. 

 The shallow furrows did not loosen the seed bed 

 too deeply. 



