10 



BULLETIN 1104, U. S. DEPARTMENT OF AGRICULTUEE. 



accidental lowering of temperature, the apples in the room scheduled 

 for 32° F. were badly frozen, so that no internal browning records 

 could be obtained from this fruit. Although only a small amount of 

 browning showed in either of the lots held at the higher tempera- 

 tures, the summary, as given in Table 2, shows much more browning 

 in the fruit held at 36° than in that stored at 40° F. 



Table 2.^— Extent of the internal 'browning of Yellow Newtown apples stored 

 at Berkeley, Calif., at different temperatures in the season of 1919-20. 





Number 



of apples 



cut. 



Comparison of results (per cent). 



Temperature. 



Sound. 



Tissue browning. 



Core browning. 





Trace. 



Medium. 



Bad. 



Trace. 



Medium. 



Bad. 



Held at 40° F 



Held at 36° F 



756 

 812 



87.3 

 64.7 



1.6 

 11.2 



0.13 

 1.2 



0.13 

 .1 



5.4 

 13.4 



3.4 

 8.9 



7.0 



Table 3. — Extent of the internal hroicninp of Yellow Neiototon apples stored at 

 ^different temperatures in the season of 1920-21. 





Number 



of apples 



cut. 



Comparison of results (per cent). 



Tree and temperature. 



Sound. 



Tissue browning. 



Core browning. 





Trace. 



Medium. 



Bad. 



Trace. 



Medium. 



Bad. 



Tree 1 (sprayed): 

 At 31° F 



55 

 62 



34 

 43 



47 

 51 



178 

 82 



90 

 66 



.56 

 63 



86 

 63 



67 



77 



123 

 95 



48 

 68 



64 



78 



52 

 68 







46.8 





 23.3 



21 

 43.2 



30.9 



85.5 





 40.9 



3.6 

 33.3 





 1.6 





 18.2 



17.9 

 91.7 



62.5 

 95.6 



28.1 

 93.7 



L9 



36.8 



12.7 

 



14.7 

 



44.7 

 9.8 



21.9 

 



8.9 

 44.0 



21.4 

 22.2 



12.8 

 46.1 



4.5 

 13.0 



35.8 

 1.1 



14.6 

 



37.5 

 



30.8 

 2.9 



40.0 

 



20.6 

 



13.4 

 



10.7 

 



18.9 

 



8.9 



4.8 



27.9 

 17.5 



22.4 

 



8.9 

 





 



1.6 

 



30.8 

 



45.5 

 



61.7 

 



17.0 

 



8.4 

 



71.1 

 



53.6 

 



55.8 

 3.2 



73.2 

 



0.8 

 





 





 



2L2 

 



10.9 

 40.3 



14.7 

 39.5 



29.8 

 45.1 



45.5 

 7.3 



10.0 



45.5 



17.9 

 50.8 



7.0 

 15.9 



1.5 



44.2 



52.8 

 4.2 



37.5 

 2.9 



62.5 

 5.1 



23.1 

 32.4 



36.3 



8.1 



17.6 

 23.3 



44.7 

 3.9 



14.0 

 4.9 



27.8 

 4.5 



23.2 



n.i 



17.5 

 34.9 



9.0 

 U.7 



20.3 

 3.2 





 1.5 



9.4 

 



34.6 

 13.2 



50.9 



At 38° F 



4.8 



Tree 10: 



At 31° F 



67.6 



At 38° F 



14.0 



Tree 69: 



At 31° F . ... 



21.3 



At 38° F 



7.8 



Tree 134: 



At31° F 



7.3 



At 38° F 



2.4 



Tree 142: 



At 31° F 



62.2 



At 38° F 







Tree 143: 



At 31° F 



53.0 



At 38° F 



1.6 



Tree 260: 



At31° F 



76.8 



At 38° F 



47.6 



Tree 262: 



At31° F 



23.9 



At 38° F 



13.0 



Tree 280: 



At31° F 



7.3 



At 38° F 



1.1 



Tree J 247: 



At 31° F 







At 38° F 







Tree J 248: 



At31° F 







At 38° F 



L3 



Tree 33: 



At31° F 



38.5 



At 38° F 



17.7 







Summary: 

 At31° F 



900 

 816 



14.3 

 54.4 



2L9 



n.o 



16.4 

 1.7 



30.2 

 0.25 



29.7 

 25.6 



20.0 

 9.2 



30.1 



At 38° F 



8.6 







