Apple scab:  Primary infection period ratings

Background Information for this page
Return to radar list for Belchertown MA
Weather data for Belchertown MA.  Forecast values begin May 22, 2013
      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 daily value is equal or less than Portion of Annual Primary Scab Infection Potential on this day
(cumulative scab infection potential in parentheses)
1 in 20 chance that daily value is more than
Sun, April 14  0 50% Green Tip    
Mon, April 15  0    
Tue, April 16  0.04    
Wed, April 17  0.04    
Thu, April 18  0    
Fri, April 19  0.08    
Sat, April 20  0.51          
Sun, April 21  0    
Mon, April 22  0 Half-inch Green    
Tue, April 23  0    
Wed, April 24  0    
Thu, April 25  0.07    
Fri, April 26  0    
Sat, April 27  0 early Tight Cluster        
Sun, April 28  0    
Mon, April 29  0 Tight Cluster    
Tue, April 30  0 Open Cluster    
Wed, May 1  0    
Thu, May 2  0    
Fri, May 3  0    
Sat, May 4  0          
Sun, May 5  0 late Pink    
Mon, May 6  0 King Bloom    
Tue, May 7  0    
Wed, May 8  0.58 Full Bloom 0 12%  (12%) 25%
Thu, May 9  0.30 1% 4%  (16%) 7%
Fri, May 10  0    
Sat, May 11  0.41   6% 9%  (25%) 11%
Sun, May 12  0.03    
Mon, May 13  0    
Tue, May 14  0    
Wed, May 15  0.07 95% Petal Fall 5% 6%  (31%) 8%
Thu, May 16  0 100% Petal Fall    
Fri, May 17  0    
Sat, May 18  0          
Sun, May 19  0.22 14% 21%  (52%) 28%
Mon, May 20  0.02 Fruit Set    
Tue, May 21  0.52 9% 15%  (67%) 21%
Wed, May 22  0.24 2% 4%  (71%) 5%
Thu, May 23  0.44 3% 5%  (76%) 7%
Fri, May 24  0.76 4% 8%  (84%) 12%
Sat, May 25  0.40   1% 4%  (88%) 6%
Sun, May 26  0    
Mon, May 27  0    
Tue, May 28  0    
Wed, May 29  0    
Thu, May 30  0    
Fri, May 31  0