Tree Fruit Pest Management

Codling Moth Management Recommendations Based on Degree-day (DD) Accumulations and Percent Egg Hatch from Biofix, 2008.


	Frederick		Rappahannock		Nelson		Botetourt		Patrick/Carroll
Biofix date	April 25		April 24		April 24		April 24		April 28
Date (2008)	DD	% hatch	DD	% hatch	DD	% hatch	DD	% hatch	DD	% hatch
April 29	36	0	72	0	79	0	73	0	8	0
May 6	111	0	151	0	170	0	156	0	93	0
May 13	167	0	209	0.5	233	1.5	221	1	179	0
May 20	222	1	282	6	310	11	291	8	255	4
May 27	308	10	367	22	403	31	377	24	356	19
June 3	426	37	493	52	532	60	504	55	495	53
June 10	624	78	688	86	737	91	707	88	697	87
June 17	778	94	855	97	911	99	879	98	875	98
JUne 24	905	98	990	100	1051	100	1012	100	1020	100
July 1	1066	0.1	1165	2	1225	4	1170	2.5	1183	3
Estimated percent egg hatch based on Washington State coddling moth egg-hatch model using accumulated degree days from biofix (base temperature = 50°F)

BLUE CELL

Prepare to control 1st brood CM larvae with 1st cover spray. A spray targeting CM beginning at 1st cover and throughout the season is warranted if trap counts exceed the threshold of 5 moths/trap/week.
Suggested materials: Rimon (50-150 DD, then at about 400 DD), Assail, Calypso, Clutch, Carpovirusine, Cyd-X or Intrepid (150 DD, then at 450 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates, or pyrethroids (250 DD, then at 550 DD).
Hand-placed CM mating disruption treatments should be deployed just prior to first moth flight and will provide different lengths of protection, depending upon the formulation (see labels).

RED CELL

Prepare for control of 2nd brood CM larvae.
Suggested materials: Rimon (1050-1150 DD, then at about 1450 DD), Assail, Calypso, Clutch, Carpovirusine, Cyd-X or Intrepid (1150 DD, then at 1450-1500 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (1250 DD, then at 1550-1600 DD).

YELLOW CELLS

Indicates onset of third codling moth flight. Third brood larvae typically do not complete development and overwinter, but can cause significant damage late in the season. Use a trap threshold of >5 moths/trap/week to initiate controls and apply a treatment within 5-7 days.
Suggested materials: Optimal timing for complete or alternate-row-middle sprays of Assail, Calypso, Clutch, Carpovirusine, Cyd-X, Intrepid or Rimon is at 2180-2200 DD, and later for Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids, at 2270-2330 DD. An alternate-row-middle spray should be applied again after 5-7 days. Additional complete sprays after 14 days or alternate-row-middle sprays at 7-day intervals may be required if trap counts continue to exceed threshold. Preharvest intervals are now an important consideration for some varieties.

BLUE CELL
Prepare to control 1st brood CM larvae with 1st cover spray. A spray targeting CM beginning at 1st cover and throughout the season is warranted if trap counts exceed the threshold of 5 moths/trap/week. Suggested materials: Rimon (50-150 DD, then at about 400 DD), Assail, Calypso, Clutch, Carpovirusine, Cyd-X or Intrepid (150 DD, then at 450 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates, or pyrethroids (250 DD, then at 550 DD). Hand-placed CM mating disruption treatments should be deployed just prior to first moth flight and will provide different lengths of protection, depending upon the formulation (see labels).
RED CELL
Prepare for control of 2nd brood CM larvae. Suggested materials: Rimon (1050-1150 DD, then at about 1450 DD), Assail, Calypso, Clutch, Carpovirusine, Cyd-X or Intrepid (1150 DD, then at 1450-1500 DD), Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids (1250 DD, then at 1550-1600 DD).
YELLOW CELLS
Indicates onset of third codling moth flight. Third brood larvae typically do not complete development and overwinter, but can cause significant damage late in the season. Use a trap threshold of >5 moths/trap/week to initiate controls and apply a treatment within 5-7 days. Suggested materials: Optimal timing for complete or alternate-row-middle sprays of Assail, Calypso, Clutch, Carpovirusine, Cyd-X, Intrepid or Rimon is at 2180-2200 DD, and later for Altacor, Avaunt, Delegate, organophosphates, carbamates or pyrethroids, at 2270-2330 DD. An alternate-row-middle spray should be applied again after 5-7 days. Additional complete sprays after 14 days or alternate-row-middle sprays at 7-day intervals may be required if trap counts continue to exceed threshold. Preharvest intervals are now an important consideration for some varieties.