Apple scab:  Primary infection period ratings

Background Information for this page
Return to radar list for Hollis NH
Weather data for Hollis NH.  Forecast values begin September 12, 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 daily value is equal or less than With Experimental <0.5" rain in 7 days Dry Switch!!!  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
Tue, March 20  0 50% Green Tip    
Wed, March 21  0    
Thu, March 22  0    
Fri, March 23  0    
Sat, March 24  0 Half-inch Green    
Sun, March 25  0.10    
Mon, March 26  0          
Tue, March 27  0    
Wed, March 28  0.09     < 1
Thu, March 29  0.01    
Fri, March 30  0    
Sat, March 31  0    
Sun, April 1  0.13    
Mon, April 2  0.05          
Tue, April 3  0    
Wed, April 4  0.03    
Thu, April 5  0    
Fri, April 6  0    
Sat, April 7  0    
Sun, April 8  0    
Mon, April 9  0 early Tight Cluster        
Tue, April 10  0    
Wed, April 11  0.04    
Thu, April 12  0.25 0 < 1  (< 1) < 1
Fri, April 13  0 Tight Cluster    
Sat, April 14  0 Open Cluster    
Sun, April 15  0.02 late Pink    
Mon, April 16  0 King Bloom        
Tue, April 17  0    
Wed, April 18  0    
Thu, April 19  0    
Fri, April 20  0    
Sat, April 21  0 Full Bloom    
Sun, April 22  0.99 3% 10%  (10%) 17%
Mon, April 23  1.54   4% 11%  (21%) 17%
Tue, April 24  0    
Wed, April 25  0    
Thu, April 26  0.09 0 < 1  (21%) < 1
Fri, April 27  0.14 95% Petal Fall    
Sat, April 28  0 100% Petal Fall    
Sun, April 29  0    
Mon, April 30  0          
Tue, May 1  0.77 13% 21%  (42%) 29%
Wed, May 2  0    
Thu, May 3  0.14 < 1 < 1  (42%) < 1
Fri, May 4  0.12 < 1 1%  (43%) 2%
Sat, May 5  0.10    
Sun, May 6  0    
Mon, May 7  0 Fruit Set        
Tue, May 8  0.61 17% 27%  (71%) 37%
Wed, May 9  0.14 < 1 1%  (72%) 1%
Thu, May 10  0.69 < 1 < 1  (73%) 1%
Fri, May 11  0    
Sat, May 12  0    
Sun, May 13  0    
Mon, May 14  0.36   10% 18%  (90%) 25%
Tue, May 15  0.58 1% 4%  (94%) 6%
Wed, May 16  0.28 0 < 1  (94%) < 1
Thu, May 17  0.05    
Fri, May 18  0    
Sat, May 19  0    
Sun, May 20  0    
Mon, May 21  0.04   0 < 1  (95%) < 1
Tue, May 22  0.55 0 4%  (99%) 11%
Wed, May 23  0.02    
Thu, May 24  0    
Fri, May 25  0    
Sat, May 26  0    
Sun, May 27  0    
Mon, May 28  0          
Tue, May 29  0.31     < 1
Wed, May 30  0.02    
Thu, May 31  0    
Fri, June 1  0    
Sat, June 2  1.84 0 < 1  (100%) 2%
Sun, June 3  0.03    
Mon, June 4  0.48         < 1
Tue, June 5  0.09    
Wed, June 6  0.36    
Thu, June 7  0.29    
Fri, June 8  0.09    
Sat, June 9  0    
Sun, June 10  0    
Mon, June 11  0