The Cool Late-summer Temperatures 

 of 1 994 Did Not Change Scald 

 Susceptibility of Apples in 

 Massachusetts 



William J. Bramlage and Sarah A. Weis 



Department of Plant & Soil Sciences, University of Massachusetts 



In Fruit Notes [59(3):6-10], we presented chusetts (Figure 1). In both cultivars, suscepti- 

 typical relationships between scald susceptibil- bility drops rapidly as fruit experience 

 ity of Cortland and Delicious apples in Massa- preharvest hours below 50°F. If Cortland are 



100 



80 



:^ 60 



(0 



u 



20 



^ Delicious 

 • Cortland 



50 



100 150 200 250 300 350 



Hours below 50°F 



Figure 1. Calculated changes in scald susceptibility (percent of fruit that 

 develop scald after storage) with increasing hours below 50°F between Au- 

 gust 1 and fruit harvest date. 



Fruit Notes, Summer, 1995 



