Eastern New York Commercial Horticulture Enrollment

Program Areas

  • Food Safety
  • Variety Evaluation
  • Market Development
  • Pest Management
  • Cultural Practices

Enrollment Benefits

  • Telephone / Email Consultations
  • Newsletter
  • Direct Mailings
  • Educational Meetings & Conferences
  • In-Field Educational Opportunities
  • On-Farm Research Trials

ENYCH Enrollment Form (PDF; 710KB)

Enrollee Login

Password:

Log In To Access:

  • Helpful Diagnostic Tool:
      What's wrong with my crop?

Not an Enrollee? Enroll Now!

Online Enrollment Form

True Armyworms Invading Sweet Corn!

Chuck Bornt, Team Leader, Extension Vegetable Specialist
Eastern New York Commercial Horticulture

June 7, 2018

This article was published in the June 7th 2018, ENYCHP Vegetable News.  Click here to view the full newsletter.

The last two weeks have had us finding some True Armyworm adult moths in our traps.  These moths move up from southern overwintering sites on storm fronts.  If you recall, we've had some issues with these buggers in the past and sweet corn isn't their only host as we've seen them attack several vegetable crops including sweet corn, brassicas, tomatoes, peppers and greens.   Not only is their damage a problem, but on things like lettuce, the droppings can affect marketability of the crop.  

Armyworms, whether Fall or True, are very eager feeders and can do a lot of damage in a short time.  Their feeding damage tends to appear ragged, with large holes eaten in the leaves and they leave lots and lots of sawdust looking frass (insect terminology for fecal matter).  They tend to feed on the top sides of crops during the night and on the undersides or deeper into the plant during the day.   

The adults are fairly large moths which are primarily nocturnal and have the ability to lay up to 2,000 eggs in their two week life.  The eggs will hatch in 7 to 14 days and the larvae begin feeding immediately, going through seven stages of development over several weeks.  The worms tend to be greenish brown (with some variations) with a pale white stripe on its back and an orange stripe on each side of the body.  One other distinguishable feature is a dark brown to black triangle located on the outside of each of the four pairs of prologs found towards the hind end of the body.   

Thresholds for when to treat corn have been established and should be treated when 25>#/b### of the plants are showing damage (Source: Integrated Pest Management Program, Missouri University).  For sweet corn and leafy greens, best control is achieved when the larvae are small (1st and 2nd instar) and applied usually later in the evening when the larvae tend to be more active and feeding on the upper surfaces of the plants.    

There are a number of insecticides labeled for leafy greens including these organic products:  Pyganic (pyrethrin), Dipel (Bacillus thuringinensis, subsp. Kurstaki), Xentari ((Bacillus thuringiensis, var. aizawai), Aza-Direct (azadirachtin), Azera (pre-mix of azadirachtin and a pyrethroid) and Entrust (check the label for the labeled rates as formulations vary for these products).   Again, these products are going to work best when applied to small larvae but if they get ahead of you, tank mixing a pyrethroid (Aza-Direct, Pyganic etc.) with a Bt (Dipel, Xentari etc) will improve performance.  Repeat applications may also be necessary depending on how long the egg laying period and development conditions are.  

Conventional insecticides labeled for armyworm control on sweet corn and leafy greens including Warrior II, Baythroid (both are recommended for 1st and 2nd instars), Coragen and Lannate.  Ensure that you get thorough coverage, of the canopy with any of these products including the whorl in the case of sweet corn.  Late evening applications also keep insecticides wet longer ensuring larval contact and ingestion of the insecticides.  Other insecticides labeled for sweet corn include Asana XL (1st and 2nd instars), Mustang Max, Radiant SC and Blackhawk.  Please check labels for rates.

army 1Note the ragged feeding and dark colored frass. (Photo: Teresa Rusinek)



more crops
Apples

Apples

Apricots

Apricots

Asparagus

Asparagus

Beets

Beets

Blueberries

Blueberries

Broccoli

Broccoli

Brussels Sprouts

Brussels Sprouts

Cabbage

Cabbage

Carrots

Carrots

Cauliflower

Cauliflower

Cherries

Cherries

Cucumbers

Cucumbers

Dry Beans

Dry Beans

Eggplant

Eggplant

Ethnic Vegetables

Ethnic Vegetables

Garlic

Garlic

Grapes

Grapes

Horseradish

Horseradish

Kohlrabi

Kohlrabi

Leeks

Leeks

Lettuce / Leafy Greens

Lettuce / Leafy Greens

Melons

Melons

Nectarines

Nectarines

Onions

Onions

Parsnips

Parsnips

Peaches

Peaches

Pears

Pears

Peas

Peas

Peppers

Peppers

Plums

Plums

Potatoes

Potatoes

Pumpkins / Gourds

Pumpkins / Gourds

Radishes

Radishes

Raspberries / Blackberries

Raspberries / Blackberries

Rhubarb

Rhubarb

Rutabaga

Rutabaga

Snap Beans

Snap Beans

Squash - Summer

Squash - Summer

Squash- Winter

Squash- Winter

Strawberries

Strawberries

Sweet Corn

Sweet Corn

Sweet Potatoes

Sweet Potatoes

Tomatoes

Tomatoes

Turnips

Turnips

more crops

Upcoming Events

Agricultural Supervisory Leadership Certificate Program - ASL 105: Employee Development and Training

June 25 - June 30, 2024 : ASL 105: Employee Development and Training

Online course is delivered through the user-friendly platform, Moodle. Materials will be available starting June 19, and live Zoom discussions will occur every Tuesday at 3 PM ET from June 25 to July 30, 2024. 

Topic areas include:

  • Setting clear expectations for farm teams
  • Designing engaging training programs
  • Providing effective performance feedback 
  • Streamlining onboarding processes for new hires
  • Cultivating a culture of continuous learning and growth
  • Personalized coaching and career planning strategies for farm personnel

View Agricultural Supervisory Leadership Certificate Program - ASL 105: Employee Development and Training Details

Virtual Orchard IPM Scout Training 2

June 25, 2024 : Virtual Orchard IPM Scout Training 2

Virtual Orchard IPM Scout Training 2

Tuesday June 25, 1:30-3:30PM   

Join us for the second live, virtual training on scouting of major insect pests of apple orchards. Anna Wallis (NYSIPM Program), Mike Basedow (CCE ENYCHP), and Janet van Zoeren (CCE LOFT), will broadcast from orchards in their region to discuss best practices for monitoring. We will review monitoring/scouting procedures for major economically significant pests. We will also share resources available for helping with identification of pests and forecasting pest activity.  

Who is this for? Farmers, farm employees, and industry members with IPM & pest management responsibilities, looking for new or refresher training.

View Virtual Orchard IPM Scout Training 2 Details

Airblast Sprayer Calibration Workshop

Event Offers DEC Credits

July 9, 2024 : Airblast Sprayer Calibration Workshop
Kinderhook, NY

University of New Hampshire Extension Field Specialist Emeritus, George Hamilton will demonstrate the importance of and best techniques to calibrate air blast sprayers. Proper calibration will ensure effective, efficient, economical and legal spraying.  Inadequate spray coverage is usually the cause of poor spray efficacy and additional spray applications. Overuse of some sprays results in unhealthy residues and can lead to fines.

Calibration should be done several times each season, or when you incorporate any new equipment or repairs - from the tractor to the nozzle.  Join us for a refresher or send new employees for training.  This workshop is open for any grower that relies on an airblast sprayer to deliver plant protectants to fruit or vegetable crops. 

View Airblast Sprayer Calibration Workshop Details

Announcements

Resources from CCE ENYCHP!


This website (https://enych.cce.cornell.edu/) contains our calendar of upcoming programs and registration links. For updated programmatic information, technical resources and links to newsletters please see our program blog site: https://blogs.cornell.edu/enychp/.
We also maintain the following online resources that you can view directly from these links:

• CCE ENYCH YouTube (program videos): https://www.youtube.com/channel/UCSk_E-ZKqSClcas49Cnvxkw

• CCE ENYCH Facebook (program social media): https://www.facebook.com/CCEENYCHP/

• CCE ENYCH Instagram (program social media): https://www.instagram.com/cceenychp/?hl=en


NEWSLETTERS  |   CURRENT PROJECTS  |   IMPACT IN NY  |   SPONSORSHIP  |   RESOURCES  |   SITE MAP