Archives for April 2022

The NJ Plastic Bag Ban and Your Retail Farm Market

The NJ plastic bag ban will impact retail farm markets starting May 4th.  Note that enforcement of this ban will vary based on your retail sales location.  Counties and municipalities may use their health or other departments for enforcement along with the DEP. Without specific guidance on how to enforce the ban in farm retail settings there will likely be variations based on location.

Some key pieces of information about the rule that may impact your market are detailed below:

Paper bags are banned only for stores that are identified as a “grocery store”.  If you are not considered a grocery store (see definition below) you may use paper bags.

Grocery stores are defined as “self-service retail establishment that occupies at least 2,500 square feet and that sells household foodstuffs for offsite consumption, including fresh produce, meat, poultry, deli products, dry foods, baked foods, prepared foods.”  We anticipate that enforcement will vary based on local jurisdiction with this definition.  If you are a retail farm market that is over 2,500 square feet, including your outdoor sales areas, it is suggested that you communicate with your municipality or county to determine if you can use paper bags or not.

The state does not define what types of plastic bags can be used for exempted items, and we have had varying guidance from DEP. Questions about the rule can be directed to singleuseplastics@dep.nj.gov Contact your municipality or county to determine how they plan to regulate exempted item bagging. DEP identifies the following items as exempt:

  • Loose items including: fruits, vegetables, nuts, coffee, grains, baked goods, candy, greeting cards, flowers, small hardware items
  • Uncooked meat, fish, or poultry
  • Food sliced or prepared to order, including soup and hot foods

You cannot sell single use bags at your store, except for pre-packaged bags such as bulk trash bags, pet waste bags, zip-lock bags, etc.

The regulation does not discuss biodegradable single-use bags  that can be decomposed by bacteria and other living organisms in a short period of time. The plastic bag ban is specific to single-use bags made from a synthetic materials. Many biodegradable bags are made from corn-based materials and have improved in their strength since they were first released a number of years ago. Should you plan on purchasing biodegradable bags make sure you can prove what materials they are made of in case of customer or regulatory questioning. The New Jersey Office of Innovation has a listing of companies that sell bags that are allowable under the ban.

Reusable bags ideally should be made of materials that can be easily cleaned and must have handles stitched onto them. Fabrics that can be washed and dried in a machine are preferred since the heat cycle in the dryer will kill any potential human pathogens that find their way onto the bags surface. If purchasing reusable bags to give to your customers be sure to look at the cleaning instructions and communicate proper handling of these bags to your customers. You are not required to provide reusable bags to your customers.

As we better understand this regulation, we will share that information with you.

*article updated on June 15, 2022

Allium leaf miner update: 04/27/22

Allium Leaf Miner (ALM)

Allium leaf miner (ALM) adults (flies) continue to be captured on yellow sticky cards in chive plantings in Hunterdon and Mercer counties.  Numbers have declined somewhat this week (Milford, Hunterdon County 21, Princeton, Mercer County 13) relative to the week prior (Milford 27, Princeton 45), but it is still too soon to stay whether the first flight has peaked.  We will report the captures over the next two weeks, with hopes for signs that the flight is ending.

Growers should consider maintaining the control method of their choice at this time.  Affected crops include chives, scallions, garlic, onions and leeks.  Look for neat rows of white spots descending from the upper tips of allium leaves (photo at left).  Initial injury often occurs on the tallest leaves.  Under warmer, less breezy conditions, adults may be seen near the tips of leaves (see photo of adult at lower right).

Floating row covers, kept on until this flight ends will help minimize access to plants.  Insecticide applications targeting adults may be helpful as well, although frequency of applications is uncertain.  Spinosyn materials (Radiant, Entrust (OMRI approved)), pyrethroids (Mustang Maxx, Warrior), neonicotinoids (Scorpion, Venom), the diamide Exirel (section 2ee recommendation) and the insect growth regulator Trigard are labeled for miner control.

 

 

 

 

Newly Registered Insecticide: Fanfare

This article has been adapted from an article written by Dr. Christelle Guédot, University of Wisconsin-Madison, and published in the Cranberry Crop Management Journal – Volume 35, Issue 1

Fanfare is a not a new insecticide, having been first registered with EPA (Environmental Protection Agency) in 1985, but it is new to the cranberry industry. Fanfare is the second pyrethroid that can be applied to cranberry, with Danitol being the first. Fanfare is registered for use in Wisconsin on several crops including bushberries, caneberries, grapes, pears, and strawberries, yet cranberry is NOT on the label. Fanfare received a supplemental label specifically for cranberry in 2021 and this will expire in December 2024 unless it is renewed by the registrant. Fanfare is marketed by Adama Essentials under the formulations EC or ES with 2 lbs of active ingredient per gallon as an Emulsifiable Concentrate (EC) or Suspension Concentrate (ES). Adama will likely work to get cranberry added to the label but in the meantime, every grower that purchased and plans to use Fanfare this season MUST have the supplemental label (in addition to the label) in hand as cranberry is not on the official label.

Mode of action and effect. The active ingredient in Fanfare is bifenthrin. Fanfare is in the class of the pyrethroids (IRAC group 3), which have a mode of action that targets the sodium channels on the axon of the neurons. Pyrethroids cause a prolonged depolarization of the neuron from a prolonged influx of sodium into the neurons, leading to repetitive nerve activity that can result in hyperexcitation, paralysis, and death. Fanfare is an insecticide with foliar activity that is fast acting by contact or ingestion of treated plant surfaces. Affected insects will rapidly stop feeding, become paralyzed, and eventually die.

Fanfare has broad spectrum activity on several insect species, found on the supplemental label for cranberry, including fruitworms, tipworm, fireworms, spanworms, flea beetle and white grub adults. In our trials in NJ, Fanfare was very effective at controlling leafhoppers. Leafhoppers are not specifically mentioned as target pests on the supplemental label; however, in NJ, you are allowed to use products on pests not present on the label, as long as the product is labeled for the crop you are applying it to.

Application restrictions. Fanfare may be applied by ground equipment, chemigation, and air, and specific recommendations are provided for the different application methods regarding direction for use, spray drift requirements, and buffer zones. Buffer zones from aquatic habitats are specifically stated in the label, with a minimum 10-foot wide vegetative strip of grass or other permanent vegetation between the field edge and aquatic habitats. For more information on mixing and spraying, and all other considerations, please see the product label.

Environmental impacts. Fanfare is extremely toxic to fish and aquatic invertebrates and cannot be applied directly to water. It must be used with care (see buffer zones restrictions) when applying in areas adjacent to bodies of water. Fanfare is highly toxic to bees exposed to direct treatment or residues on blooming plants. Do not apply Fanfare when bees are foraging and until flowering is complete. The label also emphasizes the risk to endangered species and prohibits the use of bifenthrin in areas that could result in exposure to endangered species.

Recommendations. Overall, Fanfare is recommended against leafhoppers before bloom to target leafhopper nymphs. The reason for this recommendation is that we already have great products to target other insect pests at our disposal that have much lesser impacts on the beneficial insects, including pollinators and natural enemies of these pests. The environmental concerns raised above and the acute toxicity of this compound play an important role in recommending limiting the use of Fanfare to a single pre-bloom application to minimize pesticide residues and environmental impacts. Finally, a 3-day water holding is highly recommended when using this product to allow the product to bind to soil particles and reduce movement of the product in the water system.

Please check with your handlers before using a new product as handlers may have restrictions on certain products for domestic and/or foreign markets. Handlers may extend PHIs beyond the number of days stated on the label to reduce residues, so please always check with your handlers. As of 2022, several handlers have imposed a 120-day PHI on this product. And as always, make sure to read the labels before using any pesticide.

Resources. You can find the labels for Fanfare at the following links:

Fanfare EC Label: http://www.cdms.net/ldat/ldC86005.pdf

Supplemental Label for Fanfare EC for cranberry use: http://www.cdms.net/ldat/ldC86002.pdf

Fanfare ES Label: http://www.cdms.net/ldat/ldB3C005.pdf

Supplemental Label for Fanfare ES for cranberry use: http://www.cdms.net/ldat/ldB3C000.pdf

 

Tree Fruit IPM Report for April 27, 2022

Tree Fruit Phenology: Tree Fruit Phenology is about normal. In southern counties all peach orchards are nearing Shuck Split. Pears are at Petal Fall. Red Delicious is just past Full Bloom. Sweet cherries are at about nearing Petal Fall. [Read more…]

Anthracnose and Botrytis Control in Strawberries for 2022

Dr. Mengjun Hu, University of Maryland, and Kathy Demchak, Penn State University, have written an extensive article on effective strategies for Botrytis and Anthracnose fruit rot control for the 2022 season.

Managing gray mold (Botrytis) on strawberries is increasingly challenging because of fungicide resistance development, plus a new Botrytis species that is less susceptible to fungicides is becoming common in the mid-Atlantic region. Resistance to certain fungicides is also a problem in management of anthracnose fruit rot. This article describes disease management strategies designed to slow further resistance development, while also providing specifics for managing our two most common fruit rots.

The rest of the article can be accessed and downloaded as a PDF file by clicking on the following link: Botrytis and Anthracnose Mgt Strawberries final.

Scouting for Broad Mites in the Greenhouse

Broad mites (Polyphagotarsonemus latus) are an extremely small species of mites that affect many ornamental crops. At this point in the season they may be active in the greenhouse and should be included in all greenhouse IPM scouting programs. Broad mites are only 0.2 mm long, which is about half the size of a two-spotted spider mite. This makes them nearly impossible to spot with the naked eye during regular routine scouting and challenging to locate, even with the use of a hand lens. They have a translucent yellow-green appearance and a short but rapid life cycle ranging from 5 to 13 days.

Broad mites under microscope  Broad mites under microscope Broad mites under microscope

Broad mites feed on new growth and emit saliva that is toxic to the plants. This results in leaf curl, stunting, and deformity that may be mistaken for herbicide damage, physiological disorders, or a fungal pathogen. Broad mites tend to favor New Guinea impatiens, Sunpatiens, and dahlia in the greenhouse this time of year, though they may also cause damage to gerbera, ivy, lantana, standard impatiens, snapdragon, verbena, begonia, and zinnia. They can spread via plant-to-plant contact and may even hitchhike on whiteflies or aphids to reach a new destination.

Broad mite damage on Sunpatiens

Broad mite damage on Sunpatiens. Notice the stunted growth and leaf curling. Photo: W. Errickson

Control can be achieved using miticides that are labeled specifically for broad mites, as some materials that are effective against two-spotted spider mites and spruce spider mites may not work as well on broad mites. Effective materials include Akari, Avid, Dormant Oil, Judo, Magus, Pylon, SanMite, Sirocco, Summer Oil, and Triact. Always follow the instructions on the label and take note of any sensitivities for use on specific plant species. Rotating chemical classes is also very important when treating broad mites because their rapid life cycle has the potential to lead to the development of resistance in a short period of time. Biological controls involving the release of predatory mites that feed on broad mites have also demonstrated success. Predatory mite species that are effective against broad mites include Amblyseius swirskii, Neoseiulus cucumeris, and N. californicus. Broad mites can be effectively managed in the greenhouse if they are detected early and correctly identified as part of a regular IPM program.

Additional Resources

Broad Mites Fact Sheet, University of Tennessee

https://go.rutgers.edu/zg9kdzod

Broad Mites in Ornamental Crops, Michigan State University

https://go.rutgers.edu/56gic7up

Broad mites infesting plantsDealing with Broad Mite, Greenhouse Product News

https://go.rutgers.edu/6doflkwc

Broad Mite is Becoming an Increasing Problem, Greenhouse Management

https://go.rutgers.edu/1pftyvss