52 



Campbell's 1902 Soil Culture Manual, 



stalk running in every direction, providing the condition of the ground is 

 such as to encourage them. Here one can readily see the importance of 

 cultivating as deep the first time as in any previous cultivation, for these 

 roots find their way out through the soil in the early stages of the growth 

 of the plant. Roots No. 3, which is the second circle of roots, are what is 

 properly known as brace roots. These roots like the subsequent roots 4, 

 5, and 6, find their course very largely straight down into the soil. They, 

 however, convey but a small per cent, of moisture and plant food to the 

 corn. This being almost entirely the work of the roots shown by 1 and 2. 



Cut No. 10. 



Here in this illustration can readily be seen the serious results from 

 deeper subsequent cultivation, which might result in cutting off many 

 roots. We can also see the importance of all work as outlined under the 

 various headings referring to the preparation and care of the soil being 

 carefully carried out. 



Here in this illustration is represented corn put in with the check 

 row planter, the ground plowed fully 7 inches deep, thoroughly pulverized 

 and made firm. Now, supposing we have carried out the necessary work 

 to have stored and conserved moisture to considerable depth, 5 or 6 feet, 

 with our plowed ground thoroughly pulverized and made firm, we have the 

 best possible condition, as stated under the head of Sub-Surface Pack- 



