Apple scab:  Primary infection period ratings

Return to radar list for Belchertown MA
Weather data for Belchertown MA.  Forecast values begin May 17, 2012
      These ratings are relative because they do not account for scab spore population density, which is the MOST important factor determining absolute infection risk.  Estimates also do not account for any secondary scab spores that might be present from earlier uncontrolled primary scab infection periods.  
Date Observed & Forecast
Inches Rain
McIntosh
bud stage
1 in 20 chance that actual value is equal or less than Estimated Portion
of Total Annual

Primary Scab Infection Potential
1 in 20 chance that actual value is more than
Thu, March 22  0 50% Green Tip  
Fri, March 23  0  
Sat, March 24  0 Half-inch Green  
Sun, March 25  0.03  
Mon, March 26  0  
Tue, March 27  0  
Wed, March 28  0.12        
Thu, March 29  0  
Fri, March 30  0  
Sat, March 31  0.20  
Sun, April 1  0.16  
Mon, April 2  0.01  
Tue, April 3  0  
Wed, April 4  0.04 early Tight Cluster      
Thu, April 5  0 Tight Cluster  
Fri, April 6  0  
Sat, April 7  0  
Sun, April 8  0  
Mon, April 9  0  
Tue, April 10  0  
Wed, April 11  0.02   0 < 1 < 1
Thu, April 12  0.10 0 < 1 < 1
Fri, April 13  0  
Sat, April 14  0 Open Cluster  
Sun, April 15  0 full Pink-extended  
Mon, April 16  0.03 late Pink < 1 < 1 < 1
Tue, April 17  0 King Bloom  
Wed, April 18  0        
Thu, April 19  0  
Fri, April 20  0  
Sat, April 21  0 Full Bloom  
Sun, April 22  1.37 24% 35% 46%
Mon, April 23  1.13 9% 12% 16%
Tue, April 24  0  
Wed, April 25  0        
Thu, April 26  0.08 < 1 < 1 < 1
Fri, April 27  0.06  
Sat, April 28  0  
Sun, April 29  0  
Mon, April 30  0  
Tue, May 1  0.66 95% Petal Fall 30% 33% 36%
Wed, May 2  0 100% Petal Fall      
Thu, May 3  0.30 < 1 < 1 < 1
Fri, May 4  0.03  
Sat, May 5  0.02  
Sun, May 6  0  
Mon, May 7  0.02 Fruit Set < 1 < 1 1%
Tue, May 8  0.57 4% 13% 22%
Wed, May 9  0.27   0 < 1 < 1
Thu, May 10  0.62  
Fri, May 11  0  
Sat, May 12  0  
Sun, May 13  0  
Mon, May 14  0.26 0 2% 4%
Tue, May 15  0.68 0 2% 4%
Wed, May 16          < 1
Thu, May 17     
Fri, May 18     
Sat, May 19     
Sun, May 20     
Mon, May 21     
Tue, May 22    0 < 1 < 1
Wed, May 23           
Thu, May 24