•5- 



It appears that time of picl.ing has a greater influence on the presence of 

 water core at the end of the storage period than delayed storage. 



Table II shows that during the period of storage, water core practically 

 disappeared from the fruit harvested on October 10, 1959. Only 10 fruits out of 

 the 56G apple samples had visible evidence of water core and none had internal 

 breakdo^JTi. However, considerable water core was present in the fruits harvested 

 at the later dates (Table II). Only the fruits picked October 30, 1958 had any 

 appreciable amount of internal breakdox^n. 



Because it is thought that the fruit may appear in good condition when removed 

 from storage but later develop internal breakdown when held at warm temperature, 

 approximately half of the fruit in each sample removed from storage on February 

 6, 1959 was held at room temperature for 7 days prior to examination for presence 

 of water core and internal breakdo\m. Table III shoves that no appreciable increase 

 of internal breakdown occurred during the seven days after removal of fruits from 

 storage. 



Table III - The Per Cent of Starlcing Delicious Having Water Core and Internal 



Breakdown Immediately After Removal from Storage on February 6, 1959 

 After 7 Days at Room Temperature. 



In summary, most of the water core disappeared from the Delicious apples 

 harvested on October 10th during the 1958-59 storage period. Further research is 

 needed to determine if this is generally the situation. The incidence of internal 

 breakdoxTn in the Delicious apples was not increased during the 7-day period at 

 room temperature after removal from storage. However, internal brealcdown was not 

 severe in any of the lots and whether this would be true other years is not known. 



On the basis of one year's results, it appears that delayed storage periods of 

 24 to 92 hours is no cure for water core and internal breakdox«i. Water core severity 

 appears to be closely related to fruit maturity and growers should pick apples 

 susceptible to this disorder before they become too mature. 



-W. J. Lord 



