Early Season Pest Scouting 0-25 Growing Degree-days (Pest GDD list and forecasting)

Please download or print the two resources of this post (click on them)

How to use this pest scouting / growing degree-day (GDD50) information:

The information provided in the downloads give early season scouting ranges (in growing degree days) for specific insect pests. Additionally, forecasting predictions (GDD50 accumulation) per calendar date for multiple regions of New Jersey (S,N,C).

(Please note: we will be providing pest GDD ranges regularly throughout the season for our green industries)

Scouting Ranges (please download / print above resources):

  • It is important to note that these GDD50 are not exact, rather provide a range of GDD and subsequent calendar dates that can be used to scout for, and treat for, insect pests.
  • The pests listed here will be listed again in future scouting range announcements as they undergo further developmental life stages or are vulnerable to management options.
Pest Scouting – Growing Degree-day Ranges Starting (0-25 GDD50)
Crop type Common Name Scientific Name GDD Min (50F) GDD Max (95F) Reference Developmental / Target Stage
Conifer Conifer rust mites Eriophyidae 7 22 4 Overwintering eggs hatch
Pomes, Stone fruit European red mite Panonychus ulmi 7 58 2 1st adults active
Conifer White pine weevil Pissodes strobi 7 58 RU Overwintering adults become active / prevent egg laying
Deciduous Oystershell scale Lepidosaphes ulmi 7 91 2 Spring control of overwintering stage
Deciduous, Yew Cottony camellia / taxus scale Pulvinaria floccifera 7 91 5 Spring control of overwintering stage
Many Southern red mite Oligonychus ilicis 7 91 5 Overwintering eggs hatch
Conifer Taxus mealybug Dysmicoccus wistariae 7 91 2 Spring control of overwintering stage
Oaks Kermes oak scales Kermes spp. 7 91 2 Spring control of overwintering stage
Conifer Elongate hemlock scale Fiorinia externa 7 120 2 Spring control of overwintering stage
Many Aphids Aphidoidea 7 120 2 Spring control of overwintering stage
Conifer Spruce spider mite Oligonychus ununguis 7 121 RU Overwintering eggs hatch
Oaks Golden oak scale Asterolecanium variolosum 7 121 5 Spring control of overwintering stage
Conifer Pales weevil Hylobius pales 7 121 RU Overwintering adults become active / prevent egg laying
Magnoliaceae Tuliptree scale Toumeyella liriodendri 12 121 2 Spring control of overwintering stage
Rhododendron, Azalea Azalea lacebug Stephanitis pyrioides 18 372 RU Spring control of overwintering stage
White and Scotch Pine White pine aphid Cinara strobi 22 91 RU Spring control of overwintering stage
Conifer Pine bark adelgid Pineus strobi 22 58 2 Spring control of overwintering stage
Magnoliaceae Magnolia scale Neolecanium cornuparvum 22 91 2 Spring control of overwintering stage
Conifer Spruce bud scale Physokermes piceae 22 120 2 Spring control of overwintering stage
Conifer Juniper scale Carulaspis juniperi 22 148 2 Spring control of overwintering stage
Conifer Eastern spruce gall adelgid Adelges abietis 25 100 3 spring control of overwintering 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
References RU Rutgers Cooperative Extension – IPM Notes
2 http://ccetompkins.org/resources/using-growing-degree-days-for-insect-management
3 https://www.canr.msu.edu/ipm/agriculture/christmas_trees/gdd_of_conifer_insects
4 https://extension.psu.edu/ipm-basics-for-christmas-trees#section-2
5 https://www.agriculture.nh.gov/publications-forms/documents/landscape-pests.pdf

 

Forecasting (please download / print above resources):

  • The forecasting can help you know what to scout for and when to have materials ready if treatment is required.
  • In the printable resource; look at the date on the bottom of the graph and follow that to the GDD shown to get a better understanding of GDD accumulation at calendar dates. These models change constantly as they are reliant on weather patterns but are still extremely beneficial.
  • Site specific GDD50 models, like those shown in the printable resource can be obtained at USPEST.ORG
  • NEWA-Cornell also have great degree-day models and maps that are useful for regional and specific GDD information
  • Please review Tim Waller’s previous post on utilizing growing degree-day calculators
NJ – Location Station Code GDD-Today GDD-3/19 (next Friday)
Upper Deerfield NJ50 9 19
Howell NJ10 6 16
High Point NJ59 0 4
*predicted

 Contact Tim Waller (twaller@njaes.rutgers.edu) for more information.

Upcoming ornamental meetings, webinars, and Boxwood Blight resources

Virtual education opportunities and digital resources update.

Virtual Meetings:

NJLCA – University 2021 (online)

NJNLA – Total Pro (online)

2021 –Rutgers– Central Jersey Turf & Ornamentals Institute (online)

2021 –Rutgers– 30th Anniversary Rutgers Turfgrass Symposium (online)

FREE-Webinars:

HRI tHrive Series (all taught by international experts):

  • Seeing Red? – Problems with and management options for redheaded flea beetles in nurseries
  • International Boxwood Blight Series: Germany – A 15-Year Love-Hate Relationship
  • Plant Benefits or Features – Which Cue is More Effective?

Boxwood Blight Resources

Please contact Timothy J. Waller with any questions: twaller@njaes.rutgers.edu

Reminder: Register for the VGA-Nursery/Ornamental sessions by this Wednesday (2/17) for pesticide credits!

Reminder: register here by Wednesday Feb. 17th for pesticide credits!

Please join us at the NEW- Nursery and Ornamentals Track at this year’s virtual VGA

Nursery/Ornamental track is on Monday, February 22nd 

  • Session I:  9:15 – 11:45am
  • Session II:  1:15 – 3:45pm (pesticide recertification credits acquired: 3 Cat 1A; 4 Cat 3A; 4 Cat 8C; 4 Cat 10; 4 PP2)

Click here for additional pesticide credit requirements and instructions (mandatory steps for recertification credits at VGA)

Price options:

  1. One day pass – $60.00
  2. Full 1yr VGA Membership (access to all four days of sessions 2/22-2/25)- $120

Rutgers is dedicated to protecting your privacy and keeping your personal information safe. Upon upload, your files will be encrypted and stored to Rutgers Connect. Your information will be kept strictly confidential; used solely to meet NJDEP ID verification protocol for recertification credit; and will not be used for any other purpose. Your files will be deleted within 60 days after the training event.

New Nursery and Ornamental Track at the 2021 VGA

Turf/sod producers are now eligible for assistance through CFAP – Deadline 2/26

Turf/sod producers are now eligible for assistance through CFAP – LINK

This is one of several commodities that experienced COVID-19 market disruptions but had not been explicitly included in the initial CFAP 2 rule.

Eligible turfgrass sod producers can now apply for CFAP 2 between January 19 – February 26, 2021

Payments for turfgrass sod will be equal to:

  1. The amount of the producer’s eligible sales in calendar year 2019, plus crop insurance indemnities, Noninsured Crop Disaster Assistance Program (NAP), and Wildfire and Hurricane Indemnity Program Plus (WHIP+) payments received for the 2019 crop year, multiplied by
  2. The payment rate for that range.
2019 Sales Range Percent Payment Factor for the Producer’s 2019 Sales of Eligible Commodities Falling in the Range
$0 to $49,999 10.6%
$50,000 to $99,999 9.9%
$100,000 to $499,999 9.7%
$500,000 to $999,999 9.0%
Sales over $1 million 8.8%

Payments for producers who began farming in 2020 and had no sales in 2019 will be based on the producer’s actual 2020 sales as of the producer’s application date.

Example: A producer’s 2019 sales of eligible commodities and Noninsured Crop Disaster Assistance Program payments totaled $75,000. The payment is calculated as ($49,999 times 10.6%) plus ($25,001 times 9.9%) equals a total payment of $7,775.

Contact:

  • Eligible turfgrass sod producers can now apply for CFAP by contacting their local USDA Service Center.
  • One-on-one support with applications is also available by calling 877-508-8364.
  • Access all CFAP 2 application resources at farmers.gov/cfap2/apply.

NEW- Nursery and Ornamentals Track (2 sessions – 8 speakers) at this year’s virtual VGA

Please join us at the NEW- Nursery and Ornamentals Track at this year’s virtual VGA

When: Monday, February 22nd (Session I:  9:15 – 11:45am)(Session II:  1:15 – 3:45pm (recert. credits pending))

Click here to register by Wednesday Feb. 17th for pesticide credits!

Click here for additional pesticide credit requirements and instructions (mandatory steps for recertification credits at VGA)

Price options:

  1. One day pass – $60.00
  2. Full 1yr VGA Membership (access to all four days of sessions 2/22-2/25)- $120

Summary: The sessions are geared towards delivering information broadly applicable to ornamental AND vegetable nurseries and producers alike. The speakers assembled for these sessions are renown experts and we are extremely lucky to learn from them.

  • Session I will focus on production techniques and plant selections, including management of drip irrigation clogging, fall mum selections, producing broadleaf evergreens, and native plant selections.
  • Session I – Featured Speaker: Dr. Paul Fisher (University of Florida)
  • Dr. Fisher is an expert in irrigation system management and will be discussing how to avoid or manage clogged irrigation emitters and pipes. He will be discussing how these clogs happen through the buildup of salts, biofilms, and various other particles. He will help you diagnose the cause of problems and select the best solutions.

 

  • Session II will focus on pest and disease mitigation including key pests in micro green production (aphids), the red headed flea beetle, and boxwood blight. Additionally, updates on utilizing growing degree days and other predictive models will be discussed (applicable to all crops)
  • Session II – Featured Speaker: Dr. Chuan Hong (Virginia Tech)
  • In addition to being at the forefront of Phytophthora research, Dr. Hong is a world renown boxwood blight researcher who was recently awarded nearly 4M dollars to investigate innovative methods to safeguard one of the nation’s most economically important evergreen shrubs. He will be discussing effective strategies and tools for blight mitigation at local and national levels. Together we can save this iconic landscape plant.

(pesticide recertification credits have been requested for Session II.)

Rutgers is dedicated to protecting your privacy and keeping your personal information safe. Upon upload, your files will be encrypted and stored to Rutgers Connect. Your information will be kept strictly confidential; used solely to meet NJDEP ID verification protocol for recertification credit; and will not be used for any other purpose. Your files will be deleted within 60 days after the training event.

New Nursery and Ornamental Track at the 2021 VGA

Ornamental: Coronavirus Food Assistance Program 2 (CFAP2) deadline 12/11/20

USDA’s Farm Service Agency will accept CFAP 2 applications through December 11, 2020.

Ornamental crop producers (Christmas trees, Floriculture/Cut flowers, Nursery crops, Cactus) are eligible for USDA’s Coronavirus Food Assistance Program 2 (CFAP 2). The CFAP 2 program is open to all of these operations and is based on sales, inventory, acreage or production in the 2019 or 2020 calendar years (depending on the commodity). Applicants do not need to have suffered a loss or provide any supporting documentation at sign up, unless requested.

Click here to start the process or call 877-508-8364 (or local office, links below) to speak directly with a USDA employee ready to offer assistance.

Additional links:

FSA Offices (numbers and locations)

CFAP2 Factsheet