Degree-day Recommendations (2017 edition)

Codling moth. Control is necessary in orchards where the pheromone trap capture exceeds 5 moths/trap/week. Protracted first generation flight in recent years may require management through third cover.  a. Spray timing for optimal codling moth control, based on DD accumulations from biofix (base 50°F), will differ according to the material used. Insect Growth Regulators (IGR) (e.g. Intrepid, Esteem, Rimon) and neonicotinoids (Assail, Belay, Calypso) should be applied just before egg-hatch starts, whereas other recommended materials should be applied soon after egg-hatch has begun. Sprays for first brood control should be initiated as follows: Rimon at 50-150 DD, then after about 2 weeks, if needed, at 400 DD. Assail, Belay, Calypso, Esteem, or Intrepid at 150 DD, then after about 2 weeks, if needed, at 450 DD.  For all others apply at 250 DD, then again at 550 DD, if needed.  For second brood, initiate control with Rimon at 1050-1150 DD, then after about 2 weeks if needed, at 1450 DD.  Assail, Belay, Calypso, Esteem or Intrepid at 1150, then at 1450-1500 DD, if needed.  For all others, apply at 1250 DD  after spring biofix, then at 1550-1600 DD, if needed. For third brood control, control should be initiated if the pheromone trap capture threshold (see above) is exceeded.
 

Tufted apple budmoth.  Intrepid, Proclaim, Altacor, Belt, Delegate, Voliam Flexi, Voliam Xpress, and Tourismo will provide the best control in most situations.For first brood control, these products should be applied as a complete spray at 585-640 DD from biofix (base 45ºF, Table 22), or as two alternate-row-middle applications 7 days apart beginning at 530 DD.An additional application may be needed (in 14 days for complete, in 7 and 14 days for alternate-row-middle) in high pressure situations.For all other materials, control first brood with two complete applications at 530-585 DD and 805-855 DD. Alternate-row-middle applications should commence 50-75 DD earlier and be repeated every 7 days for a total of up to four applications, depending upon insect pressure.For second brood control, apply Intrepid, Proclaim, Altacor, Belt, Delegate, Voliam flexi, Voliam xpress, anord Tourismo as two complete sprays at 2355-2435 DD and 2665-2740 DD, or as four alternate-row-middle applications, 7 days apart, beginning at 2280 DD after spring brood biofix.For all other materials, control second brood with two complete applications at 2280-2355 DD and 2665-2740 DD, or four alternate-row-middle applications at 7-day intervals, beginning 50-75 DD earlier.
 

Oriental fruit moth.
Peach - First brood:  Intrepid or Assail at 70-100 DD, then at 250-275 DD, if needed.  Organophosphates, carbamates, pyrethroids, Altacor, Delegate, Belt, Voliam Flexi, or Voliam Xpress at 170-195 DD, then at 350-375 DD, if needed. Second brood: Intrepid or Assail at 1050-1100 DD, then at 1350-1400 DD, if needed.  Organophosphates, carbamates, pyrethroids, Delegate, Belt, Voliam Flexi, or Voliam Xpress at 1150-1200 DD, then at 1450-1500, if needed. Third brood:  Organophosphates, carbamates, pyrethroids, Altacor, Delegate, Belt, Voliam Flexi, or Voliam Xpress at 2100-2200 DD, then at 2450-2500 DD, if needed.
Apple
- First brood:  Rimon at 200-250 DD.  Intrepid, Belay, Assail and Calypso at 250-275 DD.  Organophosphates, carbamates, pyrethoids,
Delegate, Avaunt, Belt or Voliam flexi at 350-375 DD.  Second brood: Rimon at 1300-1350 DD. Intrepid, Belay, Assail and Calypso at 1350-1400 DD.  Organophosphates, carbamates, pyrethoids, Delegate, Altacor, Avaunt, Belt or Voliam flexi at 1450-1500 DD.  Third broodRimon at 2300-2350 DD. Intrepid, Assail and Calypso at 2350-2400 DD, then at 2800-2900 DD, if needed.  Organophosphates, carbamates, pyrethoids, Delegate, Altacor or Avaunt, Belt, Voliam Flexior Voliam Xpress at 2450-2500 DD, then at 2900-3000 DD, if needed. Control of the fourth and fifth broods should be maintained in orchards where the pheromone trap threshold is exceeded.