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|
| Tufted apple budmoth biofix on May 3 at Winchester | |||
|---|---|---|---|
| Date (2008) |
Accumulated DD from biofix (base temperature = 45°F) |
Estimated % egg hatch** |
|
| May 6 | 44 | 0 | |
| May 13 | 128 | 0 | |
| May 20 | 213 | 0 | |
| May 27 | 330 | 0 | |
| June 3 | 481 | 1 | |
| June 10 | 718 | 44 | |
| June 17 | 908 | 80 | |
| June 24 | 1070 | 100 | |
| July 1 | 1266 | 0 | |
| ** Estimation based on Penn State tufted apple budmoth egg-hatch model | |||
| BLUE CELLS |
|---|
| Prepare for control of 1st brood larvae. Optimal timing for complete sprays of organophosphates, carbamates, pyrethroids, Altacor, Avaunt or Bt is at 530 - 585 DD, then again at 805 - 855 DD. Alternate-row-middle sprays should be initiated 50 - 75 DD earlier and be repeated at 7-day intervals. Optimal timing for a complete spray of Delegate, Intrepid or Proclaim is at 585 - 640 DD or as two alternate-row-middle sprays at 7-day intervals beginning at 530 DD. Follow with a complete spray after 14 days or alternate-row-middle sprays at 7-day intervals, depending on pressure. |
| RED CELLS |
| Prepare for control of 2nd brood larvae. Optimal timing for complete sprays of organophosphates, carbamates, pyrethroids Altacor or Bt is at 2280 - 2355 DD and again at 2665 - 2740 DD. Alternate-row-middle sprays at 7-day intervals should begin 50-75 DD earlier. Optimal timing for complete sprays of Delegate, Intrepid or Proclaim is at 2355 - 2435 DD and again at 2665 - 2740 DD. Alternate-row-middle sprays of Delegate, Intrepid or Proclaim at 7-day intervals should begin at 2280 DD. |