CAMPBELL'S SOIL CULTURE MANUAL 



67 



illustration was brought out at the Pomeroy model farm, 

 at Hill City, Kansas, in the growth and development of 

 the wheat sown in the fall of 1901. This ground had been 

 prepared with the greatest possible care, having been 

 plowed seven inches deep, with the soil in a moist condi- 

 tion, kept so by the disking and harrowing of the surface. 

 When plowed, the plow was followed closely with the sub- 

 surface packer, and the harrow following closely the sub- 

 surface packer. By endeavoring to do all the work when 

 the soil was in proper condition, we had secured a very 

 favorable physical condition. At the time of seeding, 

 October 8th, 9th, and 10th, there was a fine loose mulch 



No. 7. Root Development in Loose Soil. 



on the surface, two and one-half inches deep. The soil 

 immediately beneath was very fine, firm and moist. The 

 wheat was put in with a shoe drill, less than one-half 

 bushel of seed to the acre, from one-half to one inch into 

 this fine, moist soil, just beneath the mulch. Germi- 



