Example: Delicious were harvested on October 1, the 

 temperature had gone below 50"F on 7 nights since 

 August 1, and the starch score at harvest was 2.2. 



Using Equal ion I : 



8.36 - 3 1 (0.320) + 7(0.0546) - 2.2(0.0550) = Index I 



so. Index 1 =-1.30 



Since the Index is less than zero, less than 60% of the 

 fruit are predicted to scald after storage if no DPA is 

 applied. 



Using Equation 2: 



-1 1.8 + 31(0.414) - 7(0.0298) - 2.2(0.708) = Index 2 



so. Index 2 = -0.73 



Since this Index also is less than zero, then more than 

 20% of fruit are predicted to scald. Therefore, if these 

 fruit are stored in air at 32"F for 20-25 weeks, between 

 20% and 60% of the fruit can be expected to scald if no 

 DPA is applied. This scald can be controlled by 

 application of 500 ppm DPA, as seen in Figure 3. 



Fruit Notes, Volume 63 (Number 3), Summer, 1998 



