240 Missouri Agr. Exp. Sta. Research Bulletin No. 8 



Kind of Root 



Angers Quince 

 roots 



Angers Quince 

 roots 



Angers Quince 

 roots 



Angers Quince 

 roots 



Angers Quince 

 roots 



Angers Quince 

 root 



Angers Quince 

 roots 



Seedling Peach 

 roots 



Seedling Peach 

 roots , 



Seedling Peach 

 roots 



Seedling Peach 

 roots 



Location 



of 



Root 



Largest 

 Diameter 



Top even with 

 surface 



2 inches below 

 surface 



4 inches below 

 surface 



. 25 in.. 

 .18 in.. 



.12 in.. 



. 5 in.... 

 . 25 in.., 

 .18 in.. 



, 12 in.., 

 .65 in... 



Length 



,35 in... 12 in 



Tem- 

 pera- 

 ture 



14 in. 



-9 

 -9 

 -9 



,3 in... 



6 inches below 

 surface 



, 3 in 



12 in. 



10 in. 



-9 



Results 



Cortex injured. 



Cortex and cam- 

 bium injured. 



Cortex and cam- 

 bium injured. 



Cortex injured. 



Cortex injured. 



Cortex and cam- 

 bium injured. 



Cortex and cam- 

 bium injured. 



No injury in 

 first 2 inches 

 from top; cor- 

 tex and cam- 

 bium slightly 

 injured in next 

 4 in; all tissues 

 injured in re- 

 mainder. 



Cambium and 

 cortex injury 

 throughout. 

 Sap wood 

 slightly injured 

 in last 3 inches. 

 Injury very 

 slight nearest 

 crown. 



Cambium and 

 cortex injured 

 severely 

 throughout. 

 Sap wood and 

 pith injury in 

 last 8 in. 



Cambium and 

 cortex injury 

 throughout. 

 Sap wood and 

 pith injury in 

 last 6 inches. 



Four-year old Elberta peach roots subjected on October 19, 1911, to a 

 temperature of -4 C, showed both live and dead tissue intermingled. The 

 younger roots lying some distance from the trunk of the tree showed the tissue 

 to be all dead, killing worse than the larger roots near the trunk. 



