Apple scab infection periods for 1997

4/12/97 – 4/13/97 
1/4 inch green; 21 hours at 50 degrees

4/17/97 – 4/19/97
1/2 inch green; 72 hours at 40 degrees

4/28/97
tight cluster; 24 hours at 43 degrees

5/3/97
loose cluster; 18 hours at 52 degrees

5/6/97
pink; 12 hours at50 degrees

5/9/97
king bloom; 36 hours at 47 degrees

5/19/97
petal fall; 34 hours at 49 degrees