Oriental Fruit Moth Management in Peach, Based on Degree-day (DD) Accumulations
from Biofix and Percent Egg Hatch, 2009.

--->
  Frederick   Rappahannock   Nelson   Botetourt   Patrick/Carroll
Biofix date April 18   April 5   April 9   April 18   April 9
Date (2009) DD % hatch   DD % hatch   DD % hatch   DD % hatch   DD % hatch
April 21 45 2   124 5   117 5   67 3   138 7
April 28 178 11   265 29   269 30   219 19   281 34
May 5 258 27   369 60   385 65   346 53   423 75
May 12 376 62   490 88   509 90   491 88   552 95
May 17 470 88   587 97   604 97   567 96   651 99
May 20 505 90   622 98   640 99   601 97   683 100
May 24 609 97   713 100   730 100   693 100   771 100
May 27 669 100   782 0   806 0   768 0   849 0
May 31 763 0   871 0.5   904 1.5   862 0.3   948 2.5
June 3 836 0   948 3   988 4   941 2   1029 5
June 7 906 1.5   1025 5   1071 7   1030 5   1124 11
June 10 993 4   1112 10   1158 14   1117 10   1213 21
June 14 1100 9   1222 22.5   1269 30   1223 22.5   1322 39
June 17 1170 16   1297 35   1342 43   1295 34   1398 54
June 21 1283 32   1414 57   1467 67   1420 58   1525 76
June 24 1369 49   1498 72   1550 80   1504 73   1612 87
June 28 1488 70.5   1615 87.5   1670 92   1622 88   1736 96
July 1 1565 83   1703 94   1757 96   1704 94   1819 98
July 5 1658 91   1798 97   1850 98.5   1796 97   1914 100
July 8 1732 95.5   1876 99   1927 1.5   1871 99   1992 5.5
July 12 1834 98   1983 5   2032 7.5   1977 5   2103 11
July 15 1913 0.5   2068 9   2116 12   2057 9   2187 18
July 19 2019 7   2182 17   2226 21   2161 16   2296 29
July 22 2095 11   2262 25   2302 30   2234 27   2372 38
July 26 2207 19   2380 39   2421 45   2344 35   2487 54
July 29 2296 29   2475 52   2511 57   2429 46   2574 66
August 2 2416 44   2598 65   2629 72   2543 61   2692 78
August 5 2505 56   2691 79   2719 81   2626 72   2779 86
August 9 2620 76   2808 88   2837 90   2743 83   2899 93
August 12 2719 81   2912 94   2935 95   2835 90   2994 96
August 16 2846 91   3037 97   3056 97   2957 95   3113 98
August 19 2945 95   3138 99   3160 99   3054 97   3208 100
August 23 3067 97   3266 100   3286 100   3169 99   3328 100
August 26 3157 99   3353   3375   3252 100   3412  
August 31 3270 100   3471   3494   3368   3528  
Estimated percent egg hatch based on Penn State Oriental fruit moth egg-hatch model using accumulated degree days from biofix (base temperature = 45°F)
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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, Belt, Delegate, Voliam Flexi, 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, Belt, 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, Belt, 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.

Tree Fruit Pest Management