Pre-harvest control of codling moth
Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.
A codling moth model developed by Dr. Carlos Garcia-Salazar, MSUE, predicts third-generation codling moth flight in Southwest Michigan started around August 16. Growers should continue monitoring on-farm traps to measure adult activity that can be used in conjunction with weather information (GDD) to determine if third generation activity warrants control treatments, and to best time treatment where needed. A particular concern with third-generation codling moth is that eggs laid directly on apples at this time of year can hatch in harvest bins or the packinghouse. Table 1 identifies codling moth control materials and label information relevant to late season spraying. On farms where summer generation obliquebanded leafroller larvae may be problematic, growers should consider the use of materials with efficacy on both codling moth and obliquebanded leafroller.
Table 1. Codling moth controls.
Compound trade name |
Life-stage activity |
Total allowable |
Pre-harvest interval* |
Re-entry interval* |
Guthion 50WP** |
eggs, larvae, adults |
8 lbs |
14 day |
14 day |
Danitol 2.4EC |
eggs, larvae, adults |
42.6 oz |
14 day |
24 hr |
Rimon 0.83EC |
eggs, larvae |
150 oz |
14 day |
14 day |
Intrepid 2F |
eggs, larvae |
64 oz |
14 day |
4 hr |
Proclaim |
larvae |
14.4 oz |
14 day |
48 hr |
Imidan 70WP |
eggs, larvae, adults |
30 lbs |
7 day |
24 hr |
Baythroid XL |
eggs, larvae, adults |
5.6 oz |
7 day |
12 hr |
SpinTor 2SC |
eggs, larvae |
29 oz |
7 day |
12 hr |
Entrust 80WP |
eggs, larvae |
9 oz |
7 day |
12 hr |
Assail 30SG |
eggs, larvae, adults |
32 oz |
7 day |
12 hr |
Clutch 50WDG |
eggs, larvae, adults |
6.4 oz |
7 day |
12 hr |
Sevin |
adult, larvae |
15 lbs ai |
3 day |
12 hr |
Granulosis virus |
larvae |
4 hr |
4 hr |