Tree Fruit Pest Management

Oriental Fruit Moth Management in Peach, Based on Degree-day (DD) Accumulations from Biofix and Percent Egg Hatch, 2008.

Estimated percent egg hatch based on Penn State Oriental fruit moth egg-hatch model using accumulated degree days from biofix (base temperature = 45°F)
	Frederick		Rappahannock		Nelson		Botetourt		Patrick/Carroll
Biofix date	April 10		April 12		April 10		April 11		April 11
Date (2008)	DD	% hatch	DD	% hatch	DD	% hatch	DD	% hatch	DD	% hatch
April 15	52	2	36	1.4	79	3.2	52	2.1	54	2.2
April 22	154	8	135	6	179	12	141	7	140	7
April 29	264	29	249	25	301	39	254	26	256	27
May 6	371	60	359	56	422	74	365	58	370	60
May 13	454	82	447	80	518	91	463	84	490	88
May 20	540	94	552	95	627	98	563	96	599	97
May 27	656	99	671	100	754	100	682	100	734	100
June 3	808	0	830	0	917	2	844	0	908	1.5
June 10	1045	5	1064	7	1161	15	1085	8	1147	13
June 17	1235	24	1265	29	1370	49	1294	34	1361	47
June 24	1396	54	1435	61	1545	79	1462	66	1541	79
July 1	1593	85	1646	90	1755	97	1655	91	1739	96

BLUE CELL

Prepare for control of 1st brood larvae. Sprays are recommended in peach blocks where >15 moths/trap/week are captured.
Suggested materials: Assail or Intrepid (70 - 100 DD, then at 250 - 275 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (170 - 195 DD, then at 350 - 375 DD).
Hand-placed dispensers for OFM mating disruption should be deployed just prior to the onset of flight and will provide different lengths of protection, depending upon the formulation (see labels).
Sprayable OFM pheromone can be applied once per generation (about every 4 weeks), just prior to the onset of moth flight.

RED CELL

Prepare for control of 2nd brood larvae. Sprays for 2nd and subsequent broods are warranted if >10 moths/trap/week are captured.
Suggested materials: Assail or Intrepid (1050 - 1100 DD, then at 1350 - 1400 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (1150 - 1200 DD, then at 1450 - 1500 DD).
Sprayable OFM pheromone can be applied once per generation (about every 4 weeks), just prior to the onset of moth flight.

YELLOW CELLS

Prepare for control of 3rd brood larvae if >10 moths/trap/week are captured.
Suggested materials: Assail or Intrepid (2000 - 2100 DD, then at 2350 - 2400 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (2100 - 2200 DD, then at 2450 - 2500).
Sprayable OFM pheromone can be applied once per generation (about every 4 weeks), just prior to the onset of moth flight.
Preharvest intervals become an important consideration in the choice of material used to manage 3rd brood OFM in many peach varieties.

GREEN CELLS

Prepare for control of 4th brood larvae. If the trap threshold of 10 moths/trap/week is exceeded, apply a spray within 7-10 days.
Note: Pre-harvest interval is a critical consideration in the choice of material used to manage 4th brood OFM in late peach varieties.

BLUE CELL
Prepare for control of 1st brood larvae. Sprays are recommended in peach blocks where >15 moths/trap/week are captured. Suggested materials: Assail or Intrepid (70 - 100 DD, then at 250 - 275 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (170 - 195 DD, then at 350 - 375 DD). Hand-placed dispensers for OFM mating disruption should be deployed just prior to the onset of flight and will provide different lengths of protection, depending upon the formulation (see labels). Sprayable OFM pheromone can be applied once per generation (about every 4 weeks), just prior to the onset of moth flight.
RED CELL
Prepare for control of 2nd brood larvae. Sprays for 2nd and subsequent broods are warranted if >10 moths/trap/week are captured. Suggested materials: Assail or Intrepid (1050 - 1100 DD, then at 1350 - 1400 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (1150 - 1200 DD, then at 1450 - 1500 DD). Sprayable OFM pheromone can be applied once per generation (about every 4 weeks), just prior to the onset of moth flight.
YELLOW CELLS
Prepare for control of 3rd brood larvae if >10 moths/trap/week are captured. Suggested materials: Assail or Intrepid (2000 - 2100 DD, then at 2350 - 2400 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (2100 - 2200 DD, then at 2450 - 2500). Sprayable OFM pheromone can be applied once per generation (about every 4 weeks), just prior to the onset of moth flight. Preharvest intervals become an important consideration in the choice of material used to manage 3rd brood OFM in many peach varieties.
GREEN CELLS
Prepare for control of 4th brood larvae. If the trap threshold of 10 moths/trap/week is exceeded, apply a spray within 7-10 days. Note: Pre-harvest interval is a critical consideration in the choice of material used to manage 4th brood OFM in late peach varieties.