|Bitter rot on an Idared fruit with a small mummy, a probable inoculum source|
While we lacked wetting from rainfall, we continue to add accumulated wetting hours from dew. As of the Monday morning, Aug 31, total accumulated wetting hours (ACW) at the AREC were: at 909 ft elevation, 975 hr; at 952 ft elevation, 673 hr; and at the 983 ft elevation, 576 hr ACW. Since accumulation of wetting hours began May 14, this represents an increase of 5.5 wetting hours per foot of elevation drop from 983 to 909 ft. Continue to scout for sooty blotch, flyspeck, and fruit rots, especially at lower elevations in an orchard.
At Tyro, in Nelson County, total ACW as of Monday morning, Aug 31, were: at 941 ft elevation, 792 ACW; at 1165 ft, 415 ACW; and at 1465 ft, 473 ACW. An extended wetting event with substantial rainfall was recorded at Tyro Aug 18-19, 25 hr wet at 74-69° at the highest elevation.