Plum curculio degree day model - Background
Residual protection from a full-dose Actara, Assail, Avaunt,
Calypso, Danitol, Guthion, Imidan, or Warrior is considered depleted when one of the following conditions is met:
* 2 inches of cumulative rain within the first 10 days after application,
* 1.5 inches of cumulative rain from 10-14 days after application,
* 14 days.
Coverage is assumed to be needed from
McIntosh 95% Petal Fall until 308 degree days (base 50F) after Petal Fall as per "Oviposition
Model for Timing Insecticide Applications
Against Plum Curculio (Coleoptera: Curculionidae) in New York State" by W. H. Reissig,
J. P. Nyrop, and R. Straub; Environmental Entomology; 1053-1060; 1998.