LESSONS FROM EXPERIENCE 205 



sistently high yields. This, together with the low cost of 

 preparation, has resulted; in its showing the highest 

 average profit or lowest average loss of any of the meth- 

 ods tried at all fourteen of the stations except one. These 

 profits are based on the assumption that the corn crop 

 was so utilized as to pay for the cost of its production. 

 (Bui. 214 p. 43-7). 



Oats: At Garden City (Kansas) and all stations 

 north of North Platte (Nebraska) disking corn ground 

 has be^u productive of. higher average yields of oats than 

 either fall or spring plowing. At North Platte (Nebras- 

 ka), Hays (Kansas), Dalhart and Amarillo (Texas), it 

 yielded either the same as one of them or its place was 

 intermediate between the two. (Bui. 218 p. 41-5). 



Barley : At ten of the fourteen stations under study, 

 disked corn ground produced' higher yields than from 

 either the fall plowing or the spring plowing of barley 

 stubble. It has been the most profitable method under 

 trial at all the stations except Hettinger (N.D.). (Bui. 

 222 p. 32). 



Winter Wheat: Disked corn ground has given con- 

 sistently high yields. This, together with the low cost of 

 production, has resulted in this method showing the high- 

 est average yields of any of the methods at all of the 11 

 stations where it has been tried, except at Huntley (Mon- 

 tana) and Amarillo (Texas). These profits are based on 

 the assumption that the corn crop was so utilized as to 

 pay for the cost of producing it. (Bui. 595 p. 35-p). 



242. When Disking May Be Substituted for Plowing 

 These investigations have shown that when the corn crop 

 has been grown on properly prepared land and kept free 

 from weeds, the land does not require plowing in prepar- 

 ation for a following crop of sm)all grain. Wheat, oats 



