Background Information for this page
Return to Apple list for Easthampton MA
Weather data for Easthampton MA.  Forecast values begin December 31, 2018
Potential preharvest weather influences on
Storability, Preharvest Drop, Color, and Storage scald risk
     As of December 31, weather data do not suggest increased storage risk due to low average August temperatures, or to hot dry periods in August or September.
The McIntosh 10% drop date is only estimated after the date
of starch index at 3.5 to 4.5 is reported.
Date of first optimum weather for fruit coloring
is not estimated until date McIntosh expected to reach starch index 4.0 is within forecast range.
   Weather data indicate 165 chilling hours will have accumulated by Sunday October 21.  Research found that 500 ppm DPA for Cortland & 1000 ppm for Red Delicious is adequate for fruit harvested on or after October 21, and kept in Refrigerated Air storage.  Limited data suggest that same may also be true for McIntosh.  This is also the best guess for storage scald risk in Controlled Atmosphere storage.
Date Estimated cumulative chilling hours below 50 F
(threshold is 165 for reduced scald risk)
Interpretation of
accumulated chilling hours
Dec 31 0 too few chill hours for DPA reduction
Jan 1 0 too few chill hours for DPA reduction
Jan 2 0 too few chill hours for DPA reduction
Jan 3 0 too few chill hours for DPA reduction
Jan 4 0 too few chill hours for DPA reduction
Jan 5 0 too few chill hours for DPA reduction
Jan 6 0 too few chill hours for DPA reduction
Jan 7 0 too few chill hours for DPA reduction
Jan 8 0 too few chill hours for DPA reduction
Jan 9 0 too few chill hours for DPA reduction
Jan 10 0 too few chill hours for DPA reduction
Jan 11 0 too few chill hours for DPA reduction