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PHEROMONE TRAP COUNTS AND DEGREE DAY ACCUMULATIONS

Pheromone Trap Counts - WVU Kearneysville Tree Fruit Research and Education Center

DATE - 2008 RBLR STLM OFM CM TABM DWB LPTB PTB AM
March 17 0
March 24 6 0              
March 31 31 17              
April 7 98 376 2            
April 14 74 2688 84            
April 21 109 1152 376 0          
April 28 33 392 329 3 0   0    
May 5 12 114 210 19 3 0 1    
May 12 1 114 138 14 16 0 12    
May 19 1 37 51 30 31 1 38    
May 27 0 17 78 31 36 7 36    
June 2 0 448 20 24 46 4 16 0  
June 9 46 1504 13 19 42 27 27 0  
June 16 127 1520 13 15 2 17 24 1  
June 23 88 1792 45 9 8 6 12 2  
June 30 43 1344 65 6 1 12 9 2 0
DATE - 2008 RBLR STLM OFM CM TABM DWB LPTB PTB AM

RBLR = Redbanded leafroller; STLM = Spotted tentiform leafminer; OFM = Oriental fruit moth; CM = Codling moth; TABM = Tufted apple bud moth; DWB = Dogwood borer; LPTB = Lesser peach tree borer; PTB = Peach tree borer; AM = Apple maggot.

Degree Days and Estimated Egg Hatch -
WVU Kearneysville Tree Fruit Research and Education Center

 

OFM1

CM2

TABM3

DATE
2008

Accumulated
Degree Days

Estimated
Egg Hatch (%),
two numbers in this column represent
overlapping generations

Accumulated
Degree Days

Estimated
Egg Hatch (%)

Accumulated
Degree Days

Estimated
Egg Hatch (%)
April 10 Biofix*          
April 11 22          
April 12 41          
April 13 44          
April 14 47          
April 15 51          
April 16 59          
April 17 72

1

        
April 18 89 2        
April 19 106 3        
April 20 121 4        
April 21 132 6        
April 22 149 8        
April 23 165 9        
April 24 183 12        
April 25 201 15        
April 26 223 20        
April 27 235 22        
April 28 241 23        
April 29 247 24        
April 30 253 26        
May 1 259 27        
May 2 277 32 Biofix*      
May 3 298 38 16      
May 4 310 42 23   Biofix*  
May 5 322 46 32   12  
May 6 337 51 43   27  
May 7 355 55 57   45  
May 8 378 63 74   68  
May 9 390 66 81   80  
May 10 401 69 88   91  
May 11 405 70 89   95  
May 12 406 70 89   96  
May 13 417 73 97   107  
May 14 428 76 105   118  
May 15 448 81 120   138  
May 16 458 83 125   148  
May 17 470 85 134   160  
May 18 482 87 141   172  
May 19 489 88 145   179  
May 20 494 88 147   184  
May 21 502 90 152   192  
May 22 510 91 157   200  
May 23 521 92 165   211  
May 24 533 93 174   223  
May 25 548 95 185   238  
May 26 569 96 201   259  
May 27 598 97 225 1 288  
May 28 613 98 235 2 303  
May 29 629 98 247 3 319  
May 30 650 99 263 4 340  
May 31 676 100 285 7 366  
June 1 702 0 306 10 392  
June 2 721 0 320 12 411  
June 3 743 0 337 15 433  
June 4 769 0 358 20 459  
June 5 798 0 382 26 488 2
June 6 830 0 409 32 520 8
June 7 866 0 439 40 556 15
June 8 902 1 470 47 593 21
June 9 938 2 500 54 629 28
June 10 973 3 530 60 665 35
June 11 1001 4 553 65 693 40
June 12 1029 5 576 69 721 45
June 13 1058 6 600 73 750 50
June 14 1090 8 627 78 782 56
June 15 1119 10 651 81 811 61
June 16 1141 13 668 83 833 66
June 17 1160 15 682 85 852 69
June 18 1179 17 696 87 871 73
June 19 1195 19 707 88 887 76
June 20 1217 22 724 89 909 80
June 21 1242 25 744 91 934 84
June 22 1271 30 768 93 963 90
June 23 1297 35 789 94 989 94
June 24 1318 39 805 95 1010 98
June 25 1345 44 827 96 1037 100
June 26 1378 51 854 97 1070 0
June 27 1409 56 881 98 1101 0
June 28 1442 62 909 98 1134 0
June 29 1471 68 933 99 1163 0
June 30 1498 72 955 99 1190 0
July 1 1519 76 971 99 1211 0
July 2 1544 79 991 100 1236 0

DATE
2008

Accumulated
Degree Days

Estimated
Egg Hatch (%),
two numbers in this column represent
overlapping generations

Accumulated
Degree Days

Estimated
Egg Hatch (%)

Accumulated
Degree Days

Estimated
Egg Hatch (%)
 

OFM1

CM2

TABM3

*First sustained pheromone trap capture.

1Base temperature of 45°F, upper temperature of 90°F. Control of the second generation is justified where the pheromone trap capture exceeds 10 moths/trap/week in both apple and peach. In peach, control options include Assail or Intrepid at 1050-1100 accumulated degree days (DD) after biofix (5-10% egg hatch), then at 1350-1400 DD (45-55% egg hatch), if needed; or Imidan, Diazinon, Delegate or Altacor at 1150-1200 DD (14-19% egg hatch), then at 1450-1500 DD (64-73% egg hatch), if needed. In apple, control options include Rimon at 1300-1350 DD (35-45% egg hatch); or Assail, Calypso, or Intrepid at 1350-1400 DD (45-55% egg hatch); or Guthion, Imidan, Diazinon, Delegate, Altacor or Avaunt at 1450-1500 DD (64-73% egg hatch).

2Base temperature of 50°F, upper temperature of 88°F. Control of the second generation is justified where the pheromone trap capture exceeds 5 moths/trap/week. Spray timing for control, based on degree day (DD) accumulations after biofix, depends on the material selected. Control options include Rimon at 1050-1150 DD (0-2% egg hatch); Assail, Calypso, Esteem, Intrepid or CM granulosis virus (Cyd-X, Carpovirusine) at 1150 DD (2% egg hatch); or Azinphos-methyl (Guthion), Imidan, Delegate, Altacor or Avaunt at 1250 DD (6% egg hatch). An initial spray of any material should be followed by a second complete application in about 10-14 days (7-10 days for CM granulosis virus), or up to three additional alternate-row-middle applications 5-7 days apart (3-5 days apart for CM granulosis virus), if needed.

3Base temperature of 45°F, upper temperature of 91°F. The most effective materials for control include Intrepid, Proclaim, Rimon, Delegate, Altacor, and SpinTor. For control of the first generation, one of these products should be applied as a complete spray at 585-640 DD after biofix (20-30% egg hatch), or as two alternate-row-middle applications, 7 days apart, beginning at 530 DD (10% egg hatch). 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 [BT, or Azinphos-methyl (Guthion) or Imidan in combination with Lannate], control the first generation with two complete applications at 530-585 DD (10-20% egg hatch) and 805-855 DD (60-70% egg hatch), or four alternate-row-middle applications, 7 days apart, beginning at 480 DD (1% egg hatch).