| Date | DDs | Event |
| 4-30-17 | 802 | Ascospore season continues: approx. half-way over |
| 6-1-17 | 1629 | Ca. 100% ascospores mature; 1st 0.01" of rain will |
| 6-3-17 | 1688 | Discharge remaining spores; end of primary infection season |
| 32 | F | single sine |
| pear scab infection season [pear] model |