272 CAMPBELL'S SOIL CULTURE MANUAL 



The main points to keep in mind are: First and above 

 all things, as nearly as may be possible a perfect physical 

 condition of the soil backed by ample stored water below; 

 the good seed carefully selected, followed by good judg- 

 ment at seed time to see that the quantity of seed con- 

 forms to soil conditions, the careful after culture together 

 with not only an ambition but an effort each season to ex- 

 cell the previous crop. Remember that the average crop 

 is not one-thirci of the possible yield of our soils. 



