Killing of Plant Tissue by Low Temperature 



247 



Kind of Root 



Mazzard 



cherry roots. 



Mazzard 



cherry roots. 



Mazzard 



cherry roots. 



Mazzard 



cherry roots. 



Mazzard 



cherry roots. 



Mazzard 



cherry roots. 



Mazzard 



cherry roots. 



Location 



of 



Root 



Largest 

 Diameter 



Mazzard 



cherry roots. 



Mazzard 



cherry roots. 



3 inches below 

 surface 



3 inches below 

 surface 



3H inches be- 

 low surface.. 



5 inches below 

 surface 



10 inches be- 

 low surface.. 



At surface. . . 



2 inches below 

 surface 



2 inches below 

 surface 



lYi inches be- 

 low surface... 



Length 



,45 in... 8 in 



,3 in... . 



.4 in... 



.3 in.. 



.3 in. 



1.1 in. 



5 in.. 



4 in. 



6 in. 



10 in. 



8 in. 



13 in... 



10 in... 



.45 in... 8 in 



Tem- 

 pera- 

 ture 



-10 



-10 



-10 



-10 



-10 



-10 



-10 



,5 in. 



5 in. 



-10 



-10 



Results 



Cambium i n - 

 jured through- 

 out. Cortex in- 

 jured in last 5 

 in. Least in- 

 jury nearest 

 crown. 



Cambiumslight- 

 ly injured 

 throughout. 



Cambium and 

 cortex injury 

 very slight. 



Cambium and 

 cortex injured 

 throughout. 

 Pith injured in 

 last 3 inches. 



Cambium and 

 cortex severely 

 injured 

 throughout. 

 Pith injured 

 less severely. 



Cambium i n - 

 jury through- 

 out. Cortex 

 and cambium 

 in last 8 in. 

 Cortex, cam- 

 bium and pith 

 in last 5 inches. 



Cambium i n - 

 jury through- 

 out. Cortex 

 and cambium 

 in last 8 in. 

 Cortex, cam- 

 Ilium and pith 

 in last 5 

 inches. 



Cortex and cam- 

 hiuin injury 

 throughout. 



Cortex and cam- 

 bium injury 

 throughout. 



