Depth of Root Penetration 



231 



tion is no greater than has been found in soils in 

 Wisconsin. 



Fig. 40. Penetration of raspberry roots in Wisconsin soil. 

 Depth 5 feet. (G-off.) 



Professor Goff has washed out the roots of the 

 apple, grape, raspberry and strawberry, showing the 

 extent of their development in a loamy clay soil 



