Search Results for: spotted lanternfly

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: , , , , ,
December 29, 2021

Tree-of-Heaven: Best Herbicide Treatment and Removal Timing

Removing the Tree-of-Heaven (TOH):

During the winter, arborist companies will often take advantage of the slow season and perform needed tree removal services for clients. However, these professionals know when dealing with the tree-of-heaven (Ailanthus altissima) the off-season is only a suitable time for removal if a previous herbicide treatment was applied during the late summer or early fall seasons (i.e., mid-July to mid-October). Then during the off-season, the trees can be cut & removed from mid-November thru April (Figure 1).

(Fig. 1) The cutting & removal of this cluster of tree-of-heaven trees should only be done in the winter if herbicide treatments were applied during the late summer or fall seasons. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)

If a tree-of-heaven (TOH) is cut & removed without first using an herbicide & waiting at least 30 days, then the tree will respond with potentially dozens of trunk sprouts & root suckers that could emerge 50-feet from a large parent tree. Applying the herbicide during mid-July to mid-October when the tree is most actively translocating photosynthates to the root system will allow the herbicide to move further distances most effectively through the phloem. This will help reduce problems with trunk sprouts & root suckers which this tree species is notoriously known to produce (Figure 2).

(Fig. 2) Herbicides to TOH should be applied from mid-July to mid-October. The photo shows the onset of fall coloration & indicates the end of effective herbicide treatment for the season. (Photo Credit: Steven K. Rettke, Rutgers Coop. Ext.)

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Filed Under: Landscape, Nursery, & Turf, Nursery, Plant Diagnostic Lab
September 15, 2021

Fruit IPM for 9/15/21

Blueberries:

Putnam Scale: As of the past week, scale crawlers have tailed off. For all practical purposes, treatments for the second generation are done.

Sharpnosed Leafhopper (SNLH): We are calling the second generation trap peak occurring over the last week to 10 days. Therefore it is time to treat this generation if you have not already done so. Use any of the sucking insect materials listed in the 2021 Commercial Blueberry Pest Control Recommendations For New Jersey. Suggested materials include Diazinon, Imidan and any neonicotinoid such as Assail, Actara and Admire. Pyrethroids are also labeled, but are slightly less effective.

Late Season Scale Crawlers and Sharpnosed Leafhopper Adults per Trap
  Week Ending Scale SNLH AC SNLH (BC)
Avg 8/21 — 1.3 —
High 8/21 — 4.0 —
Avg 8/28 70.16 0.22 0.28
High 8/28 181 3.0 2.0
Avg 9/4 18.42 3 1.5
High 9/4 64 18.0 3.0
Avg 9/11 4.14 2.8 1.5
High 9/11 12.0 14.0 2.0

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Filed Under: Blueberry, Fruit, Tree Fruit, Wine Grape
August 18, 2021

Fruit IPM for 8/18/21

Grapes:

Drosophilds and Sour Rot: As the sugars start to increase in early verities like Chardonnay, be aware of Spotted Wing Drosophila combined with native fruit fly species. These populations  increase at this time of year and help spread sour rot. Sour rot will only be present when you also have injured fruit. Fruit splits and various insects can help cause that initial injury. It is thought that the spotted wing drosophila (SWD), because of its saw-like ovipositor, can help cause this initial injury, helping to make the fruit more attractive to native drosophilid species.  After injury the fruit serves as a food source for ethanol-producing yeasts and acetic acid producing bacteria, the causal agents of sour rot. This in turn attracts more fruit flies to lay more eggs and spread the decay. Good canopy management for air circulation is useful to reduce sour rot incidence. However, this must be combined with insecticides and antimicrobials. A treatment regime that consists of weekly applications of an insecticide (Mustang Maxx (or other pyrethroid), Malathion, Delegate/Entrust,  + Oxidate 2.0 has been found to be helpful. Other sterilants can also be used. Since it is important to rotate insecticide classes when treating this often, growers should use no pyrethroid or other insecticide class more that 2 times in a row. These treatments should be started before the onset of visible sour rot and fruit fly presence. [Read more…]

Filed Under: Blueberry, Fruit, Tree Fruit, Wine Grape
August 11, 2021

Fruit IPM for 8/11/21

Brown Rot: Brown rot pressure remains very high. Make sure to alternate fungicide chemistries or FRAC groups. See page 179 of the Tree Fruit Production Guide for the most effective products and Table 7.7 on page 154 for a summary of fungicide efficacy and FRAC groupings reprinted below: [Read more…]

Filed Under: Blueberry, Fruit, Tree Fruit, Wine Grape
August 2, 2021

North Jersey Grape Camp

North Jersey Grape Camp

Wednesday, August 4th at 4:30 PM

Location:

Alba Vineyard

269 County Road 627

Milford, NJ 08848

 

The meeting will include a vineyard tour, demonstration of vineyard sprayer technologies, discussion of a number of timely topics including, spotted lanternfly and nematode management, weed identification/management, fertility assessment and pesticide safety updates.

The following New Jersey Pesticide Recertification Credits will be awarded:

1-CORE                5-1A                      5-10                      5-PP2

Refreshments will be provided.

To register please contact Kim Crommelin, Rutgers Cooperative Extension of Hunterdon County at kfrey@co.hunterdon.nj.us or 908-788-1338.

For any questions and additional assistance contact Hunterdon County Agricultural Agent Megan Muehlbauer muehlbauer@njaes.rutgers.edu.

Filed Under: Wine Grape