New York State IPM Program

May 20, 2020
by Debra E. Marvin
Comments Off on World BEE Day 2020

World BEE Day 2020

Protecting bees and other pollinators has become an important social issue. But beekeeping, and the 20,000 species of bees worldwide, have been providing livelihoods, much of our food supply, and important biodiversity for thousands of years.  Today, we help celebrate the first official World Bee Day as proclaimed by the U.N. through their food and agriculture organization.

poster of world bee day

We’ve collected some of our blog posts supporting pollinator protection (see below). First, here’s some facts from the UN’s Food and Agriculture Organization:

HONEY: Honey is a nutritious, healthy and natural food produced by the bees. Its benefits go beyond its use as a sweetener as it contains several minerals, enzymes, vitamins and proteins that confer unique nutritious and organoleptic properties. Honey can be monofloral if one specific plant nectar and pollen content prevails in pre-defined percentages or polyfloral if it contains an unspecified mix of different nectars and pollens. Due to environmental, geographical and climatic conditions honey may vary in pollen content and relative humidity. Honey is produced in all five continents and its consumption varies from country to country also due to cultural reasons and eating habits.

HIVE PRODUCTS: Honey bees may provide livelihood or a source of income for many beekeepers all over the world. This could happen through the services provided by the bees (mainly pollination service, apitherapy and apitourism), or directly through the bee products. The last include: alive bees to guarantee always new queen bees or bee packs, honey, pollen, wax, propolis, royal jelly and venom. Bee products may be used as food for humans, feed for animals, cosmetics, medicines used in conventional medicine (mainly vaccination), or in apitherapy, or other like manifold products, carpentry, attractant, sweeteners, etc.

benefits of pollinators poster

POLLINATORS: Disappearing pollinators can mean losing some of the nutritious food we need for a healthy diet. The decline of pollinators could have disastrous effects for our future of food. Their absence would jeopardize the three-quarters of the world’s crops that depend at least in part on pollination, including apples, avocadoes, pears and pumpkins. And enhancing pollination isn’t just about mitigating disaster – with improved management, pollination has the potential to increase agricultural yields and quality. Pollinators also play a crucial role in maintaining and enhancing biodiversity thus improving the resilience of plants to climate change and other environmental threats.

photo of bee

THE NYS IPM Program is proud to consider POLLINATOR PROTECTION part of our focus. Visit these topics on this blog, the Think IPM Blog:

Pollinater Protection Resources

A virtual visit to an educational Pollinator Garden

Cornell Cooperative Extension’s Jen Lerner and her focus on pollinator protection

Right Plant, Right Place – for Pollinators

Planning for Pollinators

Pollinator Week, 2017

photo of bee on flower

AND MORE posts specific to Pollinator Protection from BIOCONTROL BYTES:

Habitat for beneficial insects (including pollinators) at home

Details of what plants were chosen for our beneficial insect research plots

Just how much time goes into establishing beneficial insect habitat?

 

 

 

 

May 15, 2020
by Debra E. Marvin
Comments Off on Our 2018-2019 Annual Report #7 Organic Farming…and Don’t Get Ticked NY

Our 2018-2019 Annual Report #7 Organic Farming…and Don’t Get Ticked NY

Stubborn Pests: Organic Solutions

All crops have pests. Managing them on certified organic farms is firmly rooted in IPM practices such as crop rotation, sanitation, and the use of pest-resistant varieties. In fact, it’s written into the regulations. But despite the best IPM prevention practices, pesticides are still needed for certain stubborn pests. With organic vegetable production gaining in importance in New York—a 28% increase in the number of farms from 2011 to 2016—growers have an even greater need for objective information about allowed pest management products.

To provide that info, we teamed up with Cornell AgriTech faculty members Chris Smart, Brian Nault, and Tony Shelton to conduct trials. At the end of nine years, we have many successes that are effective options for cucurbit powdery mildew, squash vine borer, worms on brassicas, potato leafhopper, and others.

Alas, some pests still have us stymied, namely striped cucumber beetle and cucurbit downy mildew, so pesticide testing will continue. Next up, we focus on pests, beneficials, and weed IPM in organic squash production systems. And, to accommodate the increasing number of researchers working in organic systems, we’re helping Cornell AgriTech transition 24 acres of research fields into certified organic production. IPM and organic: natural partners.

Photo of striped cucumber beetle

(Above) Double damage. The sharp-dressed striped cucumber beetle causes direct damage, massing on newly emerged or transplanted seedlings and sometimes chewing them to the ground, while also transmitting a sometimes-fatal bacterial wilt.

Don’t Get Ticked NY!

image of illustrated child with tick on skin

(Above) Ticks prefer moist, warm places. Teach children to make tick-checks a personal habit—the last defense against disease transmission. Knowing the spots and bumps on their skin helps them recognize new ones—new ones that happen to have legs.

Ticks are really ticking off New Yorkers worried about Lyme disease, the United States’ number one vector-borne pathogen. It’s transmitted by the blacklegged tick found abundantly throughout our state. This particular pest can also spread diseases like anaplasmosis, babesiosis, and Powassan virus. Unfortunately, additional tick species abound, and together, the many illnesses they can cause are serious threats to human health. That’s why NYSIPM is committed to reducing the impact of these little blood-suckers.

Recognizing our ability to effectively convey key risk-reducing strategies, the NYS Senate’s Task Force on Lyme and Tick-Borne Diseases joined the fight by funding our Don’t Get Ticked NY campaign. We provide easy-to-understand information at the website, and distribute ID cards, infographics and tick removal kits to educators and the public statewide through community events, extension offices and BOCES. Last year we handed out almost 50,000 tick ID cards, a few thousand tick removal kits, and directly reached over 5,000 people.

“Tick-educated” New Yorkers now recognize tick habitats, and—rather than avoid the outdoors—now know how to look and feel for ticks during their daily tick check. While threats from ticks continue to increase, so does New Yorkers’ awareness of how to stave them off. So please … don’t get ticked, New York.

photo shows items inside a tick kit: magnifier, pointy tweezers, tick identification card, alchol swabs, small mirror for checking hard to see places, small zip loc bag to place tick in if found. All parts of a tick kit that is a small zippered pouch to keep handy when going outside.

(Above) Get the pointy. Our Don’t Get Ticked New York Tick Kits are popular handouts at events across the state. You can make your own by gathering pointy tweezers, a magnifier, a mirror, alcohol wipes, and a vial or plastic bag to store the offender. But kits won’t help you if you don’t have them nearby. Our tick cards are the perfect resource to have on hand, and you can print out the same graphics from our website at www.DontGetTickedNY.org.

May 8, 2020
by Debra E. Marvin
Comments Off on Our 2018-2019 Annual Report: #5 Pollinator Habitat, and NEWA

Our 2018-2019 Annual Report: #5 Pollinator Habitat, and NEWA

If You Build It, Will They Come?

Dwindling bee numbers is a problem. The question is not should we protect pollinators and create habitat, but how? What’s the best method? The most economical? The best bee habitats—made up of plants of varying sizes and bloom times—are easy on the eye. They’re also excellent real estate for other helpers, like spiders and certain beetles, that eat pests. So can pollinator habitats provide biocontrol benefits too?

To answer these questions, our team set up pollinator habitat plots around our Christmas tree research planting—testing establishment methods, evaluating weeds, counting and identifying the insects attracted, and studying the biocontrol value to the trees.

photo of echinacea flowers in a field

ABOVE: Flowers providing pollen or nectar are important to both pollinators and many pest-eating “beneficial” insects. You can help them by choosing a variety of plants that bloom from early spring through late fall with flowers of diverse shapes. This Echinacea makes pollen and nectar readily accessible to both small and large bees, proving that it’s not just their beauty that’s worthy of our admiration.

Wildflower and grass species favored by pollinators were chosen from lists of native perennials. Some started from seed; others were transplants. By the end of the first season, natural enemies and pollinators had arrived—including lady beetles, lacewings, predatory stink bugs, spiders, hoverflies, predatory beetles, butterflies, and many wild bees. This year the plots have matured even more. We collected flying insects with sweep nets, counted butterflies, and caught wasps and bees in brightly colored bowls of soapy water. We even had a method for catching insects moving along the ground.

So far, we have lots of tips for helping growers and gardeners create their own beneficial insect habitat. As to fewer pests in Christmas trees? Time will tell.

What’s New with NEWA?

Are summer conditions becoming more unpredictable? Are you wondering how to make informed and timely decisions about pest management? If you say yes to both, you’re not alone. NEWA, the Network for Environment and Weather Applications, is here to help by providing live, on-farm decision support for fruit, vegetable, and field crops production. NEWA pairs real-time weather data from growers’ fields with online crop-specific pest forecasting. And it’s growing every year.

Developed by scientists with pest biology expertise, NEWA models predict disease progression, insect infestations, and crop phenology. Apple growers rely on apple scab forecasts in the spring, grape growers monitor grape berry moth risk through the summer, and field corn growers track western bean cutworm flights throughout the season to know when to scout.

Our latest survey proves NEWA’s unparalleled decision support to growers is working. Users attest they saved over $4,000 in spray costs and more than $33,000 in prevented crop losses annually.

NEWA partners with extension, industry, and academic partners statewide, including the Lake Erie Regional Grape Program that supports western New York’s Concord grape growers. Thanks to the close collaboration between NYSIPM, growers, and processors, that region benefited from the addition of 11 weather stations last year, a move that nearly doubled their decision-making power. NEWA also joined forces with the NYS Mesonet at the University at Albany, a collaboration that resulted in ten pilot locations across the state.

Today NEWA offers 42 models using data from 677 weather stations in 14 states. NEWA and NYSIPM support agriculture throughout New York and beyond. The latest forecast? The future looks bright.

photo of an Onset weather station

An Onset Weather Station

May 1, 2020
by Debra E. Marvin
Comments Off on Our 2018-2019 Annual Report: #4 In the Weeds and For the Birds

Our 2018-2019 Annual Report: #4 In the Weeds and For the Birds

In the Weeds

Herbicide resistant weeds. Got ‘em? Worried about ‘em? There are some bad ones out there. Some of the baddest in New York are horseweed, waterhemp, and Palmer amaranth. A result of repeated exposure to the same chemical sprays, these plants have given us all a lesson on the power of selection pressure. The crisis brought about by these super-tough weeds motivated NYSIPM to hire an integrated weed management specialist to help growers find a diverse blend of solutions. So what can be done? Instead of relying on herbicides alone, use the ‘many little hammers’ approach: attack weeds with a variety of tactics such as stacked cultivation—a mechanical method that undercuts, uproots, and then buries weeds. Because precision is key in stacked cultivation, GPS and camera guidance help keep tools in line. That’s the difference between destroying your weeds or your crop. What’s next? We’re providing input on the design of robots able to distinguish between the weeds and the crop—aka autonomous weed control. And we’re helping test an electric WeedZapper that has already demonstrated its effectiveness against horseweed. By integrating the latest technology with the oldest, IPM offers growers the many little hammers they need to create a resilient, robust weed management system for their farm.

Bryan Brown examines a waterhemp plant found in this soybean field.

(Above) Will waterhemp win? Facing a 56% decreased yield in this waterhemp-infested soybean field, NYSIPM’s Integrated Weed Management Specialist, Bryan Brown, leads a project funded by the New York Farm Viability Institute. This herbicide-resistant weed can grow an inch a day, and is an impressive seed producer. Through diversified approaches, the project has provided complete control of waterhemp in some trial sites, prompting 94% of attendees at field events to say they’ll follow the lead of this project and modify their tactics for weed control.

Anthraquinones are for the Birds

What do crows, ravens, blackbirds, starlings, grackles, Canada geese, gulls, and wild turkeys all have in common? They’re recurring pests of corn on New York farms, pulling seedlings out of the soil as soon as they emerge. Stony soils, and shallow and no-till plantings are most at risk.What’s a grower to do? Traditionally they lived with the losses, or replanted if there was time. One New York farmer was ready to quit until trying Avipel Shield, the biopesticide seed treatment containing anthraquinone, an extract found in rhubarb and many other plants. Apparently, birds don’t like it. So after a few nibbles of treated seed, they move on and look elsewhere for food. NYSIPM set out to test whether anthraquinone worked in fields that suffer major bird damage. Along with extension specialists in eight counties, we conducted trials on treated and untreated seeds in fields that typically suffer heavy loss to birds. Three years of data confirmed Avipel leaves a bad taste in birds’ mouths. Further trials will help farmers know whether treated seed is needed everywhere every year, or if random use can deter feeding. Meanwhile, these tasty results have been a hot topic at field meetings, crop congresses, and certified crop advisor trainings throughout the state.

Photo shows a red-wing blackbird in field of newly sprouted corn plants.

(Above) Fully fledged. Field Crops & Livestock IPM Extension Educator Ken Wise believes this project’s secondary success was its considerable collaboration. Funding came from three different sources over the three-year period—NYSIPM, NYS Corn Growers Association, and the NYS Farm Viability Institute. Just as important was the partnership among 11 farmers, nine extension educators, and one faculty member

April 10, 2020
by Joellen Lampman
Comments Off on It’s Bat Appreciation Week

It’s Bat Appreciation Week

The sun was set; the night came on apace, And falling dews bewet around the place; The bat takes airy rounds on leathern wings, And the hoarse owl his woeful dirges sings. – John Gay

Little brown bats capture beetles, true bugs, moths, flies, wasps, and other insects. Photo: J. N. Stuart flickr

Big brown bats feed on beetles and other hard-bodies insects. Photo: US Fish and Wildlife Service flickr

 

 

 

 

 

 

 

Bats are one of those creatures that instill fear in people. (Thanks, Hollywood.) But as all our New York bats eat insects, at a rate of around 700 insects per hour, they can play an important biocontrol role in our IPM programs.

The federally endangered Indiana bat eats beetles, flies, moths, and other insects. Photo: US Fish and Wildlife Service flickr

There are two types of bats in the Northeast. Some species are communal and typically overwinter in caves, mines, and sometimes, to our consternation, our buildings. They include the little brown bat, big brown bat, eastern long-eared bat, eastern pipistrelle, small-footed myotis, and the federally endangered Indiana bat.

(If you find bats lodging in your attic, it is best to call in the professionals. They’ll work with you at the right times of the year to close up crevices and holes that let bats in. Closing up entry holes in the summer could trap baby bats inside. For more information, visit What’s Bugging You – How to deal with bats.)

The hoary bat is our largest bat, migrates to Mexico for the winter, and feeds on beetles, true bugs, moths, flies, wasps, and other insects. Photo: Tom Benson flickr

Bats in the second group live largely solitary lives, roost primarily in tree canopies and cavities, and migrate south for the winter. These include the red bat, hoary bat, and silver-haired bat.

According to the Cornell publication, Bats in the Forest and Beyond, “in a study of a colony of 150 brown bats in an agricultural area, researchers estimated that the colony consumed over 1.25 million insects in a year. This is not surprising, considering that a single bat may eat 3,000 insects on a given summer night. Bats roosting and foraging in New York forests consume forest and eastern tent moths, and a variety of other potential forest pests”.

Whitenose syndrome on little brown bat. Photo: New York US Fish and Wildlife Service

The legal status of bats varies from state to state. In New York, two species, the Indiana bat and the northern long-eared bat, are protected. However, the conservation of all bats is encouraged. This is particularly important since the populations of some bat species, especially the little brown bat, have been decimated by an introduced fungal disease, white-nose syndrome.

So what can we do to help? According to the Cornell Wildlife Health Center, “to minimize spread of the fungus [that causes white-nose syndrome], people should not handle bats, avoid entering caves and mines with bat colonies, and should decontaminate all equipment and clothing between caves and bat roosts”.

Leave or plant trees with deep furrowed bark such as shagbark hickory that provide roosing spots for bats. Allowing dead trees with peeling bark can also provide habitat. If you must take down these trees, avoid cutting from May to early August when bats are raising thier young. We can also install bat boxes, which mimic areas bats would naturally roost.

 

Looking for something to do with the kids? Alyson Brokaw, a student involved with The Cornell University Naturalist Outreach Program, talks to students about her love of bats and developed a companion education guide.

photo of the title to a video about bats from the Cornell University Naturalist Outreach program

Alyson talks about why the world’s only true flying mammals are so amazing and why you should learn all about them! Plus, Alyson answers the burning question: “Why do bats hang upside down?”

 

 

 

March 27, 2020
by Debra E. Marvin
Comments Off on Highlights from the Northeast Mechanical Weed Control Expo

Highlights from the Northeast Mechanical Weed Control Expo

Today’s post is from Bryan Brown PhD, NYS IPM

Weeding tools have come a long way! Last summer, Eric Gallandt invited me to present the results of my latest “stacked” cultivation trials at the Northeast Mechanical Weed Control Expo. I brought my camera along to document the exciting exhibits by vendors and other researchers. Stacked cultivation featured prominently, as did enhanced accuracy ­– achieved through improved steering capability or camera-guided tools.

(Above) KULT Kress demonstrated their camera guided sweeps and finger weeders (only one row operating). These weeds were too large for optimal finger weeder performance. In-row weeds are most effectively controlled when less than one inch tall.

image shows a monitor mounted on tractor.

(above) The camera guidance system display was brought out from the tractor cab to show participants how it focuses on green plants to determine the location of the crop row.

image is three images side by side showing three angles of a cultivator pulled behind the tractor

(above) HAK showcased a new cultivating tractor with sweeps (left), finger weeders (center), and tines for the wheel tracks (right).

Image shows a sales rep from Steketee company, standing next to a pull behind cultivator that uses a multi-faceted method of disturbing soil and uprooting weeds

(above) Steketee brought their Crumbler Rotors (left), finger weeders (center), and side knives (right).

image shows a Tilmor tractor with weeding equipment suspended beneath to front end. Motor is under and behind the driver.

(above) The cultivating tractor from Tilmor is reminiscent of the Allis Chalmers G, but notice the new crane-winch system for moving tools into place.

image shows a pull behind cultivator with mutlple soil disturbance adaptions

(above) Tilmor also demonstrated a walk-behind tractor with a potential “stacked” cultivation setup.

photo shows two hand pushed cultivators, each with multiple weeder attachments

(above) Jen Goff, from Johnny’s Selected Seeds, showcased several innovative wheel hoes and hand tools.

image shows two researchers discussing their use of multi-functional weeding cultiivators

(above) Ellen Mallory PhD, and Tom Molloy from UMaine discuss their results testing the potential of the CombCut and inter-row hoeing in small grains.

image shows a small attachment suitable for weeding grain fields.

(above) “Stacking” cultivation tools is not just for vegetable crops, this combination has proved effective in small grains.

(above) Slow-motion-video of camera-guided hoeing in a small grain. This practice is gaining popularity in Europe but is still uncommon in the United States.

(below) The futuristic “Tertill” from Franklin Robotics. This solar-powered weeding robot attacks weeds with a string trimmer on its belly and it senses crop plants based on their height. I can’t believe this is now on the market! Flying cars will be next!

graphic showing photo of Bryan Brown and his information. Email him at b r y a n dot b r o w n at cornell dot edu

 

 

 

 

 

 

March 6, 2020
by Debra E. Marvin
Comments Off on Soybean Disease Workshop at Cayuga County ‘Shop Meeting’

Soybean Disease Workshop at Cayuga County ‘Shop Meeting’

Soybean Disease Identification, Expansion of Soilborne Soybean Diseases and the Soybean Cyst Nematode in NYS, and Considerations for Soybean Seed Treatment Options for these Threats

Cayuga County CCE specialist Ron Kuck held a shop meeting at Dumond’s farm in Union Springs on February 19th.  Jaime Cummings, Field Crops and Livestock IPM Coordinator at NYSIPM shared information on how to correctly identify, differentiate and manage soybean diseases, which seed treatments are most beneficial and cost-effective for soybeans in NY, and how to deal with the new soybean cyst nematode now that it’s been confirmed more widely in NY.
Photo shows Jaime Cummings speaking to a group of seated farmers inside a large, bright metal barn.

A good turnout on February 19 for a Cayuga County Shop Meeting. Growers concerned with soybean diseases heard the latest from NYSIPM’s Jaime Cummings.

Participants took a pre-workshop quiz to gauge their knowledge of the subject, and a post-workshop quiz to see how much they learned.  And, they learned a lot!  The average quiz rating before the workshop was 57%, and was 87% after.  This means a 30% knowledge gain regarding when and which management methods are most effective for each soybean disease, including when pesticides are not the best option, and how to incorporate integrated pest management options for minimizing losses to the soybean cyst nematode.
photo shows symptoms of soybean sudden death diesase

Soybean Sudden Death (SDS) Foliar Symptoms

Ron Kuck received positive feedback from a number of participants, who each said that they appreciated the workshop and Jaime’s expertise and enthusiasm on the subject matter.
Photo shows New York State Integrated Pest Management Program's Jaime Cummings speaks to a group of soybean farmers about soybean diseases.

About 35 farmers and agriculture professionals attended February’s Shop Meeting in Union Springs, NY.

 

Photo shows a close up of soybean plant showing symptoms fo stem canker, a fungal disease.

Symptoms of Northern stem canker on soybean.

Thank you to all who coordinated and attended this successful event.

For more information: Jaime Cummings

This is a graphic containing a photo of Jaime Cummings and where she is housed annd includes her contact email address j c 2246 at cornell dot e d u

March 4, 2020
by Debra E. Marvin
Comments Off on Summary of Stacked Cultivation Trials in New York

Summary of Stacked Cultivation Trials in New York

photo portrait of Dr. Bryan Brown

Dr. Bryan Brown

Today’s Post comes from NYSIPM’s Dr. Bryan Brown

Using several different cultivation implements at once, or “stacking” tools, can improve weed control effectiveness. From my work at the University of Maine, Eric Gallandt and I showed that certain cultivation tools work synergistically together, particularly those combinations that undercut, then uproot, then bury weeds. Unfortunately crop damage was high in the trial results from Maine. So in New York, I made some adjustments to be gentler on the crop ­– wider spacing between tools, removed center tines on the row harrow, and tested a new hiller to bury weeds without contacting the crop (Figure 1). And GPS guidance was a big improvement too!

 

Figure 1. Cultivation implements used in these trials were A) sweeps, B) finger weeders (yellow and row harrow (blue), and C) a disk hiller. For full explanation of implement adjustments and trial methods, see the project report at  https://ecommons.cornell.edu/handle/1813/64539

Figure 2. Results of cultivation trials in snap beans. This was the first cultivation event following planting and tillage. At cultivation, snap beans were 6” tall, while weeds were 0.5” tall in 2018 and 1” tall in 2019.

Figure 3. Results of cultivation trials in beets. First cultivation occurred at either the 2-leaf stage or about one week later at the 4-leaf stage. 2019 beets trials were planted in the spring, whereas 2018 beets were planted late-summer, with lower-growing winter annual weeds present.

Overall, the adjustments made in these trials greatly reduced crop damage while weed control remained high. I was most impressed with the stacked combo of sweeps plus fingers plus disk hillers, which consistently controlled the greatest percentage of weeds. These results also demonstrate that in-row cultivation should not be conducted prior to the 4-leaf stage in beets. For more information on integrated weed management, contact bryan.brown@cornell.edu. This project was supported by a USDA NIFA CPPM.

 

 

 

February 12, 2020
by Debra E. Marvin
Comments Off on The Soybean and Small Grains Congress

The Soybean and Small Grains Congress

On February 5th and 6th, Bryan Brown and Jaime Cummings of the NYSIPM Program presented their latest findings to the farmers, agricultural consultants and agribusiness associates attending the Soybean and Small Grains Congress meetings in Batavia, NY and Waterloo, NY.

Photo of Jaime Cummings speaking to audience

Field Crops and Livestock IPM Coordinator Jaime Cummings

This event was sponsored by the Northwest Dairy, livestock and Field Crops Team, an outstanding regional agriculture program from Cornell Cooperative Extension serving a nine-county region in western New York. The team’s specialists work together with Cornell faculty and extension educators statewide to provide service to the farms large and small whether dairy, livestock, hay, corn, wheat or soybean focused. They are part of the Cornell CALS’ Pro-Dairy program outreach.

map of New York with the NWNY Dairy, Livestock and Field Crops Team Counties shown in red.

Caption: NWNY Dairy, Livestock and Field Crops Team counties

On Wednesday, February 5th, the meeting took place in Batavia. Besides NYSIPM staff, presenters included Mike Stanyard (CCE NYNY Team), Dennis Pennington (Small Grains Specialist from Michigan State University), Gary Bergstrom (Cornell University Plant Pathologist), Jodi Putnam (Field Crops Specialist from CCE), Mike Helms (Pesticide Management Education Program, Cornell University), and Dan Wixted, (Pesticide Management Education Program, Cornell University). With such experienced trainers as these, attendees heard valuable information that will serve them well once the 2020 field season begins.

Bryan Brown shared his recent research trial on managing waterhemp in soybeans. Effective Programs for Controlling Waterhemp in Soybeans

Photo show Bryan Brown speaking to the audience

Dr. Bryan Brown speaks about his work reducing weeds in soybeans.

Jaime Cummings presented her research survey results on biocontrol use of a parasitoid on the cereal leaf beetle. Cereal Leaf Beetle: History, Biology, Management and Biocontrol

On Thursday, February 6th, the same team of presenters spoke to an audience in Waterloo, NY.

Congratulations Northwest New York Dairy, Livestock & Field Crops Team. Their educational programs and individual assistance cover a wide area of best management practices and as well as dairy farm business. For dairy farms, a bilingual dairy specialist provides producers with employee training and human resource facilitation in Spanish. Educational and support venues range from on individual farm management team meetings and troubleshooting to multi-day classroom and hands-on training and from ongoing farmer group discussion meetings to thematic day long symposia.

As to the success of this year’s S&SG Congress?  Mike Stanyard shared this: I want to thank all of you for making the 2020 S&SG Congresses a success!  It was a very well-rounded program and I have received plenty of comments about the quality of the presentations.  I know the growers took home some very valuable information.

Photo of Mike Stanyard of Cornell.

Mike Stanyard (Ph.D.) CCE, NWNY Dairy, Livestock & Field Crops Team

Photos: Ken Wise

September 6, 2019
by Debra E. Marvin
Comments Off on Weeding Now Reduces Weeds Later

Weeding Now Reduces Weeds Later

Photo shows Dr. Bryan Brown in a soybean field looking at a waterhemp plant.

Dr. Bryan Brown examines a single WATERHEMP plant capable of producing thousands of seeds.

Summer annual weeds start flowering in early August, so it’s important to control them beforehand to prevent seed production. This is true for commercial growers and for homeowners.  One of the most prolific is waterhemp, a bane to growers because it’s also resistant to herbicides. According to our INTEGRATED WEED MANAGEMENT SPECIALIST, DR. BRYAN BROWN, waterhemp is likely resistant to herbicide Groups 2, 5, and 9 in NY.

photo of top of mature waterhemp plant

That’s why Bryan is collaborating with growers and researchers around the state to investigate other controls, including cultivation, cover cropping, and even a device that zaps weeds with electricity. Funding for this work was provided by the Farm Viability Institute.

“Here we’re removing waterhemp that survived some of our herbicide treatments in soybeans. Because this trial is done in a grower’s field and we don’t want it to spread, we’re removing it before it sets seed (up to 500,000).”

Soybean grower? Here’s what Bryan and Regional Field Crops Specialist, Mike Hunter explained in their CORNELL FIELD CROPS Blog:

While other pigweed species have short hairs on their stems, waterhemp and Palmer amaranth have smooth stems. The best way to distinguish waterhemp and Palmer amaranth is to rip off one of the lower leaves. Another characteristic of waterhemp and Palmer amaranth is separate male (pollen producing) and female (seed producing) plants. Herbicide resistance traits can transfer by pollen, which has allowed these weeds to develop resistance faster.

To prevent these weeds from taking hold, growers are also recommended to start weed-free with tillage, followed by a 2-pass program of residual and post-emergence herbicides that utilizes several effective sites of action. Foliar applied herbicides should be used when these weeds are less than four inches tall. Since these weeds emerge over a broader timeframe than most weeds, mid-season residual herbicide applications should be considered, along with increased planting density or tighter row spacing to help close the canopy earlier.

photo shows close up of water hemp stalk with small leaves

Waterhemp weed showing growth pattern.

If you do find yourself with escapes of these weeds, it makes economic sense to go hand-rogue those weeds out of your fields rather than deal with 200,000 to one million seeds in your soil from each weed. If there are too many to bag up by hand, consider sacrificing that patch of your crop by mowing and tilling the area before the weeds produce seed. Avoid harvesting these areas. Combines are especially good at spreading weed seeds. If you must harvest these areas, know that combines can carry 150 pounds of plant material even you think it’s empty, so check out some of the great online videos on how to clean them out after going through weedy fields.

The weakness of waterhemp and Palmer amaranth is the short lifespan of their seeds in the soil. Of those that don’t germinate, very few will survive in the soil for more than four years. So, if you can keep it under control for four years, you won’t have much of it after that. But as one Pennsylvania grower put it, “the cheapest way to control Palmer amaranth is to never get it in the first place.” So, it’s important to make sure that your seed, feed, bedding, and equipment are clean from the start.

Photo of Dr. Bryan Brown with waterhemp weeds we removed from a soybean field.

Dr. Bryan Brown works with growers, extension educators, industry leaders, and researchers to address knowledge gaps in weed IPM and develop programming to improve adoption of effective weed management practices. His work covers all agricultural crops throughout New York.

logo of New York Farm Viability Institute

Thank you, NY Farm Viability Institute

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