Please note: The Rutgers Nursery and Green Industry Working Group is working to deliver regular pest and disease updates throughout the season. These will be in addition to important alerts, critical topics, and pesticide credit opportunities. This tool is made for you, the commercial agriculture business, so please let us know if there are particular topics you would like to see included in the regular update.
Email: twaller@njaes.rutgers.edu Phone: 856-451-2800 Ext. 1.
Insect Pests
| Projected GDD50 accumulation as of 4/30/2024 | ||||||
| CODE | Location | 1-Apr | 1-May | 1-Jun | 1-Jul | 1-Aug |
| NJ50 | Upper Deerfield (South) | 47 | 237 | 696 | 1408 | 2308 |
| D4116 | Bridgeton (South) | 45 | 172 | 632 | 1346 | 2243 |
| KMIV | Millville Airport (South) | 57 | 249 | 676 | 1362 | 2237 |
| NJ05 | Greenwich (South) | 53 | 247 | 716 | 1436 | 2338 |
| NJ10 | Howell (Central) | 33 | 172 | 551 | 1191 | 2026 |
| N59 | High Point (North) | 18 | 117 | 440 | 990 | 1711 |
| USPEST.ORG – Model: simple average/growing degree-day, Min: 50F – Max: 95F, NMME forecast | ||||||
| Forecast: 7-month NMME based seasonal climate forecast (USPEST.ORG) – Subject to change regularly = Check Often | ||||||
Please download and print the Rutgers Nursery and Landscape Pest Scouting Guide or Conifer and Christmas Tree Pest Scouting Guide and refer to this post “Obtaining your local growing degree-days (GDD)” for additional information. (See pest scouting guides for complete list of references)
Please SHARE what you SEE!! If you see a pest, disease, otherwise interesting or troublesome issue please report it to the Working Group by following the QR Code on the front of the Pest Scouting Guides or by filling out this reporting form.
Keep reading for more ALERTS – Boxwood Blight risk this week – Red-headed flea beetle timing, borer activity, and upcoming pests.
Boxwood Blight Risk this week:
- Click here for current Boxwood Blight Risk Models
- Click here for the 4/10/24 boxwood blight ALERT with material considerations
Buprestid beetle / Flathead / Metallic Borer Specific models:
If borer insects are a common problem for your operation there are specific degree-day models made for Bronze birch borer and Emerald ash borer. You can set up these emailed alerts through the USPEST – PUSH Alerts for a multitude of pests and diseases. Contact twaller@njaes.rutgers.edu for assistance.
- click here for – Bronze Birch Borer (BBB) specific model (go to ‘Station’ and use your zip code)
- click here for – Emerald Ash Borer (EAB) specific model (go to ‘Station’ and use your zip code)
- More information on Clearwing Moth Borers in Pheromone Traps and Differentiating the Common Wood Borers of Ash Trees found here.
Red-headed flea beetle – UPDATED 4/30/24 – life stage predictions
| SOUTH | CENTRAL | NORTH | |||||||
| TARGET RANGE | Upper Deerfield (NJ50) | Howell (NJ10) | High Point (NJ59) | ||||||
| Growth Stage | Gen. | -LOW- | -HIGH- | LOW (DATE) | HIGH (DATE) | LOW (DATE) | HIGH (DATE) | LOW (DATE) | HIGH (DATE) |
| Egg hatch – larvae | 1 | 8/29 | 8/22 | 5/2 | 5/26 | 5/8 | 6/4 | 5/15 | 6/11 |
| Adults | 1 | 5/31 | 10/24 | 5/22 | 6/16 | 5/30 | 6/24 | 6/6 | 7/2 |
- Redheaded flea beetle hatch now through the next few weeks in NJ.
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Please refer to this updated RHFB materials and timing chart.
- Systemic materials should be applied approximately 4weeks (now) prior to adult emergence to knock down the first generation. Refer to the link above for material considerations.
Other important insect pests:
Please download and print the Rutgers Nursery and Landscape Pest Scouting Guide or Conifer and Christmas Tree Pest Scouting Guide and refer to this post “Obtaining your local growing degree-days (GDD)” for additional information. (See pest scouting guides for complete list of references)
More information on soon-to-be-important pests and diseases will be shared soon.
