Killing of Plant Tissue by Low Temperature 



211 



Variety 



Same, l^i in. in dia. 



at crown 



Same, l?s in. in dia.. 

 Same, IH in. in dia. 

 Same, 1 }4 in- in dia. 

 Same, 1 in. in dia. 



Same, 

 Same, 



^'y in. in dia. 

 3^ in. in dia. 



Same, J^ in. in dia. 



Same, J^ in. in dia. 



Same, }^ in. in dia 



June 26,'13 

 June 26,'13 

 June 26,'13 

 June 26,'13 

 June 26,'13 

 June 26,'13 

 June 26,'13 



Ben Davis apple, 

 five years old, 

 3 in. in dia. ... 



Same, 2 3^ in in. . 

 dia 



Same, 2% in. in 

 dia 



Same, 2 in. in 

 dia 



Same, 1 J^ in. in 

 dia 



Same, 1 in. in 

 dia 



Same, 1 in. in dia... 



Same, % in. in dia. 



July 2,'13 



July 2,'13 



July 2,-13 



July 2,'13 



July 2,'13 



July 2,'13 



July 2, '13 



July 2,'13 



July 2,'13 



July 2,'13 



July 2, "13 



-5 

 -5 



-5 

 -5 

 -4 

 -5 

 -5 



-4.5 

 -4.5 



-4.5 



-4.5 



-4.5 



-4.5 

 -4.5 

 -4.5 



-4.5 



-4.5 



-4.5 



Location 



of 



Tissue 



12 in. above crown. 

 18 in. above crown. 

 24 in. above crown. 

 36 in. above crown. 

 48 in. above crown. 

 60 in. above crown, 

 72 in. above crown. 



Crown 



6 in. above crown. . 



12 in. above crown. 

 18 in. above crown. 



24 in. above crown. 



36 in. above crown. 

 48 in. above crown, 

 60 in. above crown 



72 in. above crown, 



84 in. above crown. 



96 in. above crown 



Results 



above two 

 feet also in- 

 jured in cor- 

 tex. All sec- 

 tions above 

 four feet in- 

 jured in cam- 

 bium, cortex 

 and sap wood. 

 The crown 

 was hardiest 

 and the high- 

 er up from 

 the crown 

 showed the 

 more injury. 



Cambium 

 slightly 

 injured. 



Cambium 

 slightly in- 

 jured. 



Cambium in- 

 jured. 



Cambium se- 

 severely 

 injured. 



Cambium se- 

 verely injured 

 cortex slight- 

 ly injured. 



Cambium se- 

 verely injured 

 cortex slight- 

 ly injured. 



Cambium and 

 cortex severe- 

 ly injured. 



Cambium and 

 cortex severe- 

 ly injured; 

 sap wood 

 slightly in- 

 jured. 



Cambium and 

 cortex severe- 

 ly injured; 

 sap wood 

 slightly in- 

 jured. 



Cambium and 

 cortex severe- 

 ly injured; 

 sap wood 



slightly in- 

 jured. 



Cambium, cor- 

 tex and sap 

 wood severely 

 injured. 



