Rutgers University | New Jersey Agricultural Experiment Station | Pesticide User Responsibility

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Seasonal updates on ornamental, nursery, and turf pests.
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March 22, 2022

Pest Scouting Update – 25 to 150 GDDs Plus Printable resources!

Additional resource: SLF EGG MASS GUIDE – USE FOR TRAINING (click here to download)

We have compiled the GDD resources into one single document – please download and print multiple copies of this for yourself and employees in efforts to best scout for these insect pests. These guides do not dictate when to spray, rather they inform scouting ranges for insect pests, vulnerable life-stages, and overlapping timeframes for multiple troublesome pests.

Please Download these resources:

Nursery and Landscape Pest Scouting Guide 2022 PDF (note this contains conifer pests as well)

Conifer Pest Scouting Guide 2022 PDF

Refer to this post “Obtaining your local growing degree-days” for additional information 

We will be making regular announcements throughout the season, however we wanted you to have this beta-version of the compiled growing-degree day information. This will be updated and modified throughout the season – PLEASE let me know what difference you are seeing in the field so we can continue to make this resource better for all of us.   

Contact: twaller@njaes.rutgers.edu (or call the Cumberland County Extension Office – 856-451-2800)

Growing degree-days as of writing this 3/22/22 (using USPEST.org weather station codes):

  • Southern (NJ50): 74
  • Central (NJ10): 72
  • Northeastern (Greater NYC Metro area (D6302): 41
  • Northwestern (NJ59): 21
  • Crop type Common Name Scientific Name GDD Min (50F) GDD Max (95F) Reference Developmental / Target Stage
    Conifer Zimmerman pine moth Dioryctria zimmermani 25 100 3 1st larvae
    Conifer Cooley spruce gall adelgid Adelges cooleyi 25 120 3 Spring control of overwintering stage
    Conifer Eastern spruce gall adelgid Adelges abietis 25 100 3 Spring control of overwintering stage
    Conifer Northern pine weevil Pissodes approximatus 25 100 4 1st adults active
    Conifer Zimmerman pine moth Dioryctria zimmermani 25 100 3 1st larvae active
    Conifer Cooley spruce gall adelgid Adelges cooleyi 25 120 3 Spring control of overwintering stage
    Conifer White pine weevil Pissodes strobi 25 220 4 1st adults active
    Shade trees European fruit lecanium Parthenolecanium corni 35 145 2 Spring control of overwintering stage
    Many, evergreen Euonymus scale Unaspis euonymi 35 120 2 Spring control of overwintering stage
    Conifer European pine sawfly Neodiprion sertifer 35 145 1 Hatched larvae
    Conifer Fletcher scale Parthenolecanium fletcheri 35 148 2 Spring control of overwintering stage
    Conifer European pine shoot moth / borer Rhyacionia buoiana 50 220 4 1st larvae active
    Maples Maple bladdergall mite Vasates quadripedes 58 148 2 Spring control of overwintering stage
    Honeylocust Honeylocust plant bug Diaphnocoris chlorionis 58 246 2 Nympths / adults active
    Conifer Pine tortoise scale Toumeyela parvicornis 58 148 2 Cralwer activity
    Conifer Pine bark adelgid Pineus strobi 58 618 2 Spring control of overwintering stage
    Conifer Balsam twig aphid Mindarus abietinus 60 100 4 Egg hatch
    Many Southern red mite Oligonychus ilicis 69 157 RU Spring hatch
    Conifer Eastern pine shoot borer Eucosma gloriola 75 200 4 1st adults active
    Malus, Prunus, many Eastern tent caterpillar Malacosoma americanum 90 190 2 Larvae treatment before tents apparent
    Many Gypsy moth Lymantria dispar 90 448 RU Larvae treatment (early instars)
    Conifer Cooley spruce gall adelgid Adelges cooleyi 90 180 4 1st adults active – Douglas fir
    Malus, Prunus, many Eastern tent caterpillar Malacosoma americanum 90 190 2 Larvae treatment before tents apparent (near 150-GDD50)
    Malus, Prunus, many Eastern tent caterpillar Malacosoma americanum 90 190 2 Larvae treatment before tents apparent (near 150-GDD50)
    Conifer Balsam twig aphid Mindarus abietinus 100 150 4 Stem mothers present (control target)
    Conifer Pine engraver (Ips bark beetle) Ips spp. 100 150 4 1st adults active
    Conifer European pine sawfly Neodiprion sertifer 100 195 4 1st larvae active
    Pieris Andromeda lace bug Stephanitis takeyai 115 279 RU Nymphs (1st generation)
    Azalea Azalea lace bug Stephanitis pyrioides 118 372 RU Nymphs (1st generation)
    Conifer Larch casebearer Coleophora laricella 120 150 4 Egg hatch
    Elm, Service berry Woolly elm aphid Eriosoma americana 121 246 2 (6) Control target
    Elm, Service berry Woolly elm aphid Eriosoma americana 121 246 2 (6) Control target
    Birch Birch leafminer Fenusa pusilla 123 290 RU Adults – egg laying
    Many Gypsy moth Lymantria dispar 145 200 4 Egg hatch, 1st larvae
    Holly Holly leaf miner Phytomyza ilicis 147 265 RU Adults – egg laying
    Many Cankerworms, inch-worms, loopers (many) 148 290 2 Larvae treatment
    Lilac, ash, privet, many Lilac / Ash Borer Podosesia syringae 148 299 2 Adult flight
    Yews, Rhododendrons, many Black Vine Weevil Otiorhynchus sulcatus 148 400 2 Pupation / Adult emergence
    Dogwood, many Dogwood Borer Synanthedon scitula 148 700 2 Adult activity
    Conifer Spruce spider mite Oligonychus ununguis 150 175 4 1st egg hatch
    Conifer Spruce needleminer Endothenia albolineana 150 200 4 1st larvae active
    Conifer Balsam gall midge Paradiplosis tumifex 150 300 4 Adults laying eggs
    Conifer Hemlock woolly adelgid Adelges tsugae 150 150 RU Eggs and 10% hatch
    Conifer Spruce spider mite Oligonychus ununguis 150 175 4 1st egg hatch
    Conifer Spruce needleminer Endothenia albolineana 150 200 4 1st larvae active
    Conifer Balsam gall midge Paradiplosis tumifex 150 300 4 Adults laying eggs
    Conifer Hemlock woolly adelgid Adelges tsugae 150 150 RU Eggs and 10% hatch
    Conifer Spruce spider mite Oligonychus ununguis 150 175 4 1st egg hatch
    Conifer Spruce needleminer Endothenia albolineana 150 200 4 1st larvae active
    Conifer Balsam gall midge Paradiplosis tumifex 150 300 4 Adults laying eggs

References:

RU Rutgers Cooperative Extension – Landscape IPM Notes
2 http://ccetompkins.org/resources/using-growing-degree-days-for-insect-management
3 https://extension.psu.edu/ipm-basics-for-christmas-trees#section-2
4 https://www.canr.msu.edu/ipm/agriculture/christmas_trees/gdd_of_conifer_insects
5 https://www.agriculture.nh.gov/publications-forms/documents/landscape-pests.pdf
6 https://extension.umd.edu/ipm/pest-predictive-calendar-landscapenursery
7 https://www.canr.msu.edu/ipm/agriculture/christmas_trees/gdd_of_landscape_insects
Unv. Del. Coorespondance with Dr. Kunkel (University of Delaware)-evolving GDD ranges
Compiled by – Timothy J. Waller, Ph.D. – Rutgers Cooperative Extension, Cumberland County Nursery Crops – twaller@njaes.rutgers.edu

 

Filed Under: Landscape, Nursery, & Turf, Nursery, Plant Diagnostic Lab, Turf Tagged With: , , , , , , ,
March 21, 2022

NJ Pesticide Credits. March 24th Weed Management Webinar

For NJ applicators in 10, 1A and PP2

4 category credits.

A virtual workshop will be held on March 24 from 8 am to 11 am for farmers interested in learning how to use integrated weed management (IWM)) techniques to control  troublesome weeds in their fields. This is the fifth year for the workshop series, which is a collaborative effort between the University of Maryland, Virginia Tech, and the University of Delaware.

Education regarding weed identification and integrated management strategies continues to be critically important to enable early intervention and effective management options.  2022 is shaping up to be especially challenging with anticipated shortages of many commonly used herbicides. The 2022 workshop series will provide tactics to manage important weeds given limited herbicide availability and increased input prices. Material covered will target row-crop production systems, but tactics learned may be applicable to other systems. These workshops are free, but participants will need to register at https://go.umd.edu/IWM.

Pesticide credits will be available for MD, DE, NJ and WV. Two hours of CCA continuing  education credits will be offered for each session.

For more information, contact Kurt Vollmer at (443) 446-4260 or Ben Beale at (301) 475- 4481.

If you are attending from NJ, contact Melissa Bravo to upload your pesticide license and photo i.d. at 856-340-6582. This meeting counts as an ‘in person’ meeting as long as you stay on camera. If you cannot stay on camera the entire time, no credits will be awarded. 

NJ Applicators remember, attendees of online courses can earn 25% of their credits for each category from online sources.  Only those whose 5-year recertification period is ending 10/31/2022 are eligible to earn 100% of their credits online.  Attendees can check their eligibility online at www.pcpnj.org.

—

Kurt M. Vollmer, Ph.D.

Extension Specialist-Weed Management
University of Maryland
Wye Research and Education Center
124 Wye Narrows Drive
Queenstown, MD 21658
(443) 446-4260
Filed Under: Commercial Ag Updates, Field, Forage & Livestock, Fruit, Landscape, Nursery, & Turf, Uncategorized, Vegetable Crops
March 16, 2022

Action required NOW to safeguard Nursery shipping – SLF egg mass guide, additional resources, permitting

EXTREMELY  IMPORTANT – PLUS EGG MASS VISUAL GUIDE

Crippling load-by-load phytosanitary requirements are a very REAL concern for the nursery industry this spring.

WE as an industry are in this together, in order to safeguard our industry please do the following:

  1. SLF Training Permits for hang-tags (click here) are required for each company driver who delivers your plants out-of-state. This training is relatively simple and you can also obtain Training materials to educate your employees (click here)
  2. Scout every plant for ANY SLF life stages – from dead adults to egg masses. REMOVE any egg masses prior to shipment and train employees to know the various appearances of SLF egg masses.
  3. Use this guide – SLF EGG MASS GUIDE – USE FOR TRAINING (click here to download) (print and hang up / distribute to personnel)
  4. Refer to this great resource from Penn State: Spotted Lanternfly Management Guide (click here)
    1. An excerpt pertaining to the use of Dormant/Hort oils to suffocate egg masses (note this is not enough for plants about to be shipped (scraping required!), rather this may be considered for plants with SLF that are not being shipped this spring)Ovicides to Kill Egg Masses
      Experiments have shown that some insecticide sprays can kill SLF eggs. So far, all experiments were done between February and April using egg masses that had intact protective coverings. The most effective insecticides tested that are registered for use on ornamentals were horticultural and dormant oils. When oils were applied directly to the egg masses at a concentration of at least 3 percent, they were effective in killing up to 75 percent of treated eggs. Labels must be followed to prevent plant damage, and not all plants should be sprayed due to phytotoxic damage potential.These experiments suggest that registered insecticidal oils may provide some control of eggs if they are applied between February and April in high enough volumes to get excellent coverage. Oils offer a lower-toxicity option and may provide some control of egg masses that are not accessible for scraping or smashing. However, for egg masses that are within a reachable area, scraping or smashing will provide greater efficacy than currently available ovicides. We are actively researching other ovicides that could provide increased control, and we encourage you to stay up to date on our progress.

Please be diligent in this matter. Early season sprays to target nymphs will be discussed soon, but for now remove ANY and ALL signs of SLF in ANY SHIPMENTS! 

Use this guide – SLF EGG MASS GUIDE – USE FOR TRAINING (click here to download)

 

The following is an alert and reminder from NJDA and NJNLA, and Nick Polanin’s prior post…

Grower Alert: Don’t Let Spotted Lanternfly Impact Spring Shipping

The spring shipping season is upon us, and Spotted Lanternfly (SLF) should be one of your top concerns. You are probably well aware of the shipping disruptions that could occur if any life stage of Spotted Lanternfly is found on outbound deliveries from NJ growers.

No doubt many of you heeded the NJ Dept. of Agriculture’s recommendations last fall and implemented control measures to prevent the spread of neighboring infestations into your nursery or greenhouse facility. To the extent that those efforts might have come up short, you would be well advised to begin scouting and removing any egg masses (and adult carcasses) from your crops – especially as items are being loaded for shipment. Otherwise, you run the risk of contaminated shipments being fully rejected by the vigorous inspections that are planned at out-of-state retail and landscape destinations this season.

Even though you may disagree with these measures, be advised that it remains within the discretion of any state to impose crippling load-by-load phytosanitary requirements on future deliveries.

Load-rejections that occurred last fall underscore the seriousness of the Spotted Lanternfly situation and the far-reaching impact it might have on your business and the NJ industry at large.

Additionally, Spotted Lanternfly training permits are required for each company driver who delivers your plants out-of-state. This training is relatively simple and available online by clicking HERE.

Should you have any questions, please feel free to reach out to NJNLA (609-291-7070) or the NJ Department of Agriculture Plant Diagnostic Lab (609-406-6939).

Joseph Zoltowski, NJDA; Ed Overdevest and Lori Jenssen, NJNLA

Filed Under: Landscape, Nursery, & Turf, Nursery, Plant Diagnostic Lab, Turf, Uncategorized Tagged With: , , , , ,
March 11, 2022

Permitting Procedure for Importation of Poultry, Hatching Eggs, or Poultry Waste from Highly Pathogenic Avian Influenza (HPAI) States

Producers, please be aware of the following permit requirements. The updated list of states with detections can be accessed at

https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-disease-information/avian/avian-influenza/2022-hpai

The following information is from the NJ Dept. of Agriculture

https://www.nj.gov/agriculture/divisions/ah/diseases/avian_influenza.html

  • Only poultry or hatching eggs moving into New Jersey live bird markets, from HPAI states, require a permit and 72 hour test.
  • The collection date, collection time, laboratory result, laboratory accession number and laboratory name must be recorded on the CVI
    accompanying the shipment.
  • A copy of the laboratory report must also accompany the shipment.
  • No poultry waste shall be imported from HPAI states, without prior approval and permit issued by the State Veterinarian.
  • For information about testing please refer to the N.J.A.C. 2:3-7.4 (b) at the link below:
    http://www.nj.gov/agriculture/divisions/ah/pdf/NJACChapter3.pdf

STEP ONE:

  • Print and complete the form below and send to the Division of Animal Health by email or fax.
    Email –state.veterinarian@ag.nj.gov
    Fax – 609-671-6413
  • This form is to be used to facilitate the receipt of information. Submission of this form is not a permit for movement.

STEP TWO:

  • Call the Division of Animal Health at 609-671-6400, Monday through Friday, with the exception of holidays, from 8:45 AM to 4:45
    PM (EST), to confirm the Division’s receipt of the information.

STEP THREE:

  • If the application is complete, a permit number will be issued and a copy of the completed form with permit number will be
    emailed or faxed back to the requester.

“Folks who plan to import poultry product into NJ are recommended to call the Division of Animal Health (609-671-6400) to inquire if their intended purchase requires a permit. If yes, we can walk them through the process. The need for a permit might depend on the product, the location of the origin site, testing, etc…” – NJ Animal Health communication

Filed Under: Commercial Ag Updates, Field, Forage & Livestock, Fruit, Landscape, Nursery, & Turf, Vegetable Crops Tagged With:
March 9, 2022

Grower Alert: Don’t Let Spotted Lanternfly Impact Spring Shipping

The following is an alert and reminder from NJDA and NJNLA

The spring shipping season is upon us, and Spotted Lanternfly (SLF) should be one of your top concerns. You are probably well aware of the shipping disruptions that could occur if any life stage of Spotted Lanternfly is found on outbound deliveries from NJ growers.

No doubt many of you heeded the NJ Dept. of Agriculture’s recommendations last fall and implemented control measures to prevent the spread of neighboring infestations into your nursery or greenhouse facility. To the extent that those efforts might have come up short, you would be well advised to begin scouting and removing any egg masses (and adult carcasses) from your crops – especially as items are being loaded for shipment. Otherwise, you run the risk of contaminated shipments being fully rejected by the vigorous inspections that are planned at out-of-state retail and landscape destinations this season.

Even though you may disagree with these measures, be advised that it remains within the discretion of any state to impose crippling load-by-load phytosanitary requirements on future deliveries.

Load-rejections that occurred last fall underscore the seriousness of the Spotted Lanternfly situation and the far-reaching impact it might have on your business and the NJ industry at large.

Additionally, Spotted Lanternfly training permits are required for each company driver who delivers your plants out-of-state. This training is relatively simple and available online by clicking HERE.

Should you have any questions, please feel free to reach out to NJNLA (609-291-7070) or the NJ Department of Agriculture Plant Diagnostic Lab (609-406-6939).

Joseph Zoltowski, NJDA; Ed Overdevest and Lori Jenssen, NJNLA

Filed Under: Commercial Ag Updates, Landscape, Nursery, & Turf, Nursery, Vegetable Crops Tagged With: , ,
March 8, 2022

RCE Seeks Input Regarding COVID-19 Resources For 2022 Season

Rutgers Cooperative Extension’s EXCITE team is requesting NJ farmers input via a short five-minute survey about COVID-19-related resources for the upcoming growing season.  

Please click here to go to the survey: https:/go.rutgers.edu/mcgr9pzt 

This survey is totally anonymous, you do not have to answer any questions you do not want to, and you can stop at any time.  

After taking the survey, please take a minute to forward this post to other NJ farmers who may not see this message. You can copy the link or just forward this message.  

Thank you. 

Filed Under: Commercial Ag Updates, Field, Forage & Livestock, Fruit, Landscape, Nursery, & Turf, Vegetable Crops Tagged With: , , , , ,