THE CAMPBELL SYSTEM 



soil and endeavoring to bring it to the 

 highest degree of perfection." 



Mr. A. M. Ten Eyck, Professor of 

 Agronomy at the Kansas State Agricul- 

 tural College, puts the whole matter con- 

 cisely as follows: 



"The principle of loosening the surface 

 of the soil and keeping a mulch of mel- 

 low soil in order to prevent the evapora- 

 tion of the moisture is well recognized by 

 farmers generally, and is practised to a 

 greater or less extent in the cultivation of 

 all kinds of crops. In the Campbell sys- 

 tem of culture the purpose is to keep a 

 mellow soil-mulch on the surface of the 

 land all the time, not only during the 

 growing of the crop, but in the intervals 

 between harvest and seeding time. Thus, 

 after the crop is planted, the land is kept 

 cultivated with the harrow or weeder in 

 order to break the surface crust and con- 

 serve the soil moisture, and, following out 

 159 



