<http://schema.org/description>
"Based on the egg hatch models (SkyBit, Inc) for TABM we should observe 10 percent egg hatch around May 29, while for OBLR around June 3. In the majority of Pennsylvania orchards where leafrollers are present, TABM is the dominant leafroller species responsible for most fruit injury.  A critical time to control the second generation of pear psylla is during the first week of hatch of the young nymphs and then a repeat application should be made 12 to 14 days later. An action threshold of 1 nymph per leaf is recommended.  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://extension.psu.edu/plants/tree-fruit/news/2012/leafroller-biofixes-and-pear-psylla-hatch>