Pests

PestsWeeds, insects and disease reduce crop yield and quality.

PESTS CATEGORIES




Field Crop Update, September 25, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 25, 2025

Announcements, Pests, Disease, and Growing Degree Days


Field Crop Update, September 18, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 19, 2025

Announcements, Pests, Disease, and Growing Degree Days


Field Crop Update, September 12, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 15, 2025

Announcements, Pests, Disease, and Growing Degree Days


Field Crop Update September 4, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 4, 2025

Announcements, Pests, Disease, and Growing Degree Days


Field Crop Update, August 21, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 21, 2025

Field Observations, Pests, Disease, and Growing Degree Days


Field Crop Update, August 14, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 15, 2025

Announcements, Pests, Disease, and Growing Degree Days


Field Crop Update, August 8, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 8, 2025

Field Observations, Pests, Disease, and Growing Degree Days


Field Crop Update, July 31, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 31, 2025

Field Observations, Pests, Disease, and Growing Degree Days


Field Crop Update July 25, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 25, 2025

Announcements, Field Observations, and Pests


Field Crop Update July 17, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 18, 2025

Field Observations, Pest Monitoring, and Growing Degree Days


Field Crop Update, July 10, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 10, 2025

Field Observations, Pest Monitoring, and Growing Degree Days


Field Crop Update, July 3, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 7, 2025

Field Observations, Pest Monitoring, and Growing Degree Days


Field Crop Update May 13, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: May 14, 2025

Field Observations, First Cutting Forage Quality, and Growing Degree Days


Field Crop Update May 7, 2025

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: May 7, 2025

Field Observations, First Cutting Forage Quality, Growing Degree Days, and Pest Monitoring


Avian Influenza (HPAI)

General Contact Information, Administrative Assistants
Central New York Dairy and Field Crops

Last Modified: February 18, 2025


Field Crop Update, September 27, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 27, 2024

Programming Updates and Growing Degree Days


Field Crop Update, August 23, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 23, 2024

Field Observations, Weather Outlook, and Growing Degree Days


Field Crop Update August 15, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 16, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update August 9, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 9, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, July 31, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 6, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, July 25, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 26, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, July 18, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 18, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, July 12, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 15, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, June 27, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 27, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, June 20, 2024

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 21, 2024

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, October 5, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: October 6, 2023

Announcements, Weather Outlook, and Growing Degree Days


Field Crop Update, September 28, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 29, 2023

Announcements, Weather Outlook, and Growing Degree Days


Field Crop Update, September 7, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 7, 2023

Announcements, Weather Outlook, and Growing Degree Days


Field Crop Update, August 31, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 6, 2023

Announcements, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, August 24, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 24, 2023

Announcements, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, August 18, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 18, 2023

Field Observations, Weather Outlook, Growing Degree Days, and Pest Monitoring


Field Crop Update, August 10, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 10, 2023

Field Observations, Weather Outlook, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update, August 4, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 4, 2023

Field Observations, Weather Outlook, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update, July 27, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 27, 2023

Field Observations, Weather Outlook, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update, July 20, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 20, 2023

Field Observations, Weather Outlook, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update, July 14, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 18, 2023

Field Observations, Weather Outlook, Growing Degree Days, Pest & Disease Management


Field Crop Update, June 29, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 29, 2023

Field Observations, Growing Degree Days, Weather Outlook, and Pest & Disease Monitoring


Field Crop Update, June 22, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 22, 2023

Field Observations, Growing Degree Days, Weather Outlook, and Pest & Disease Monitoring


Field Crop Update, June 14, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 15, 2023

Field Observations, Growing Degree Days, Weather Outlook, and Pest & Disease Monitoring


Field Crop Update June 7, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 7, 2023

Field Observations, Growing Degree Days & Weather Outlook, and Pest and Disease Monitoring


Field Crop Update, May 25, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: May 25, 2023

Field Observations, Growing Degree Days & Weather Outlook, and Pest and Disease Monitoring


Field Crop Update, April 26, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: May 5, 2023

Growing Degree Days and Pest Monitoring


Field Crop Update, May 3, 2023

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: May 5, 2023

Growing Degree Days and Pest Monitoring


Field Crop Update, September 30, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 30, 2022

Reminders and Growing Degree Days


Field Crop Update, September 22, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 26, 2022

Fall Field Prep, Reminders from last week, and Growing Degree Days


Field Crop Update, September 15, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 15, 2022

Announcements, Field Observations, and Growing Degree Days


Field Crop Update, September 8, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 8, 2022

Announcements, Field Observations, and Growing Degree Days


Field Crop Update, September 1, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 1, 2022

Announcements, Field Observations, and Growing Degree Days


Field Crop Update, August 25, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 25, 2022

Field Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update, August 16, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 17, 2022

Field Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update, August 4, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 4, 2022

Field Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update July 27, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 28, 2022

Field Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update July 21, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 22, 2022

Field Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update July 15, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 15, 2022

Fields Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update July 7, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 8, 2022

Field Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update June 30, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 30, 2022

Field Observations, Growing Degree Days, and Pest & Disease Monitoring


Field Crop Update June 23, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 24, 2022

Field Observations, Growing Degree Days (Returning Next Week), and Pest & Disease Monitoring


Field Crop Update June 16, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 16, 2022

Field Observations, Growing Degree Days and Weather Outlook, and Pest and Disease Monitoring


Field Crop Update June 9, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 9, 2022

Field Observations, Growing Degree Days, and Weather Outlook


Pest and Disease Monitoring May 24, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: May 25, 2022

Pest and Disease Monitoring


Field Crop Update, May 2, 2022

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: May 5, 2022

Growing Degree Days and Pest Monitoring


Field Crop Update, September 24, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 24, 2021

Field Observations, Growing Degree Days and Weather Outlook


Field Crop Update, September 17, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 17, 2021

Field Observations, Growing Degree Days and Weather Outlook


Field Crop Update, September 9, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 10, 2021

Field Observations, Growing Degree Days and Weather Outlook


Field Crop Update, September 2, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: September 2, 2021
Field Crop Update, September 2, 2021

Field Observations, Growing Degree Days & Weather Outlook, and Pest Monitoring


Field Crop Update, August 26, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 27, 2021

Field Observations, Growing Degree Days & Weather Outlook, and Pest Monitoring


Field Crop Update, August 20, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 20, 2021

Field Observations with Chlorpyrifos Update, Growing Degree Days & Weather Outlook


Field Crop Update, August 13, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 13, 2021
Field Crop Update, August 13, 2021

Field Observations, Growing Degree Days & Weather Outlook, and Pest Monitoring


Field Crop Update, August 6, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: August 6, 2021
Field Crop Update, August 6, 2021

Field Observations, Growing Degree Days & Weather Outlook, and Pest Monitoring


Field Crop Update July 30, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 30, 2021
Field Crop Update July 30, 2021

Field Observations, Growing Degree Days and Weather Outlook, and Pest Monitoring


Field Crop Update July 22, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 23, 2021
Field Crop Update July 22, 2021

Field Observations, Growing Degree Days and Weather Outlook, and Pest Monitoring


Field Crop Update July 16, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 16, 2021
Field Crop Update July 16, 2021

Field Observations, Growing Degree Days and Weather Outlook, and Pest Monitoring


Field Crop Update July 9, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 9, 2021

Field Observations, Growing Degree Days & Weather Outlook, and Pest Monitoring for the week ending July 9, 2021


Field Crop Update July 2, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: July 6, 2021

Field Observations, Growing Degree Days, and Pest Monitoring for the week of July 2nd


Field Crop Update June 24, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 25, 2021
Field Crop Update June 24, 2021

Field Observations, Growing Degree Days, and Pest Monitoring


Field Crop Update June 17, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 18, 2021
Field Crop Update June 17, 2021

Field Observations, Growing Degree Days, and Pest Monitoring


Field Crop Update June 11, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 11, 2021

Field Observations, Growing Degree Days and Pest Monitoring


Field Crop Update May 31-June 4, 2021

Erik Smith, Area Field Crop Specialist/Team Leader
Central New York Dairy and Field Crops

Last Modified: June 4, 2021

Field Observations, Growing Degree Days and Pest Monitoring


Black Cutworm

Kevin Ganoe, Area Field Crop Specialist
Central New York Dairy and Field Crops

Last Modified: June 2, 2020


Glyphosate Yellow Flash

Kevin Ganoe, Area Field Crop Specialist
Central New York Dairy and Field Crops

Last Modified: July 21, 2014

In recent weeks soybean growers have seen new soybean leaves turn yellow after an application of glyphosate.  There are many thought on why this chlorotic condition occurs and the presentation available for download explored those in depth.

Potato Leafhopper Resistant Alfalfa Varieties Show Their Stuff

Last Modified: May 9, 2014

Keith Waldron, NYS Livestock and Field Crops IPM Coordinator wrote this article for the Weekly Field Crops Pest Report 2012 July 12, 2012, Volume 11 Number 13.  See the attached PDF.



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Upcoming Events

If I'm Not Here Tomorrow: Estate Planning for Young Farm Families with Children

November 5, 2025

Free webinar

Dairy Systems and Technology Showcase - Farm Tours

November 6, 2025 : Farm Tour - Creek Acres Farm
Amsterdam, NY

Free event, but registration required.  Brand new freestall barn.  All attendees must wear clean clothes and boots, and scrub and disinfect footwear upon arrival and before leaving. 

November 6, 2025 : Farm Tour - Glenvue Dairy Farm
Fultonville, NY

Free event, but registration required.  Under construction 10 robot farm.  All attendees must wear clean clothes and boots, and scrub and disinfect footwear upon arrival and before leaving. 

November 7, 2025 : Farm Tour - Indian Camp Farm & Dairy
Earlville, NY

Free event, but registration required.  Four robot barn and new manure aeriation system.  All attendees must wear clean clothes and boots, and scrub and disinfect footwear upon arrival and before leaving. 

Seleccion y organizacion del personal (Staffing and Organizing Your Team, Taught in Spanish)

November 12, 2025

Course begins Wednesday, November 12.  Live Zoom discussions: Tuesdays, Noon - 1PM EST beginning November 18 through December 23.

Announcements

Sign Up for Our Weekly E-Newsletter

We send out a bi-weekly e-newsletter that has announcements, upcoming programs, and opportunities for you!  Registration is quick, easy, and free.  Click here to sign up today!

Farmers Can Join MeatSuite For Free!

MeatSuite.com is a free resource provided by Cornell University where NY meat farmers can create a farm profile and list their bulk (wholes, halves, quarters) and bundled (i.e. Grilling Bundle) meat products.

Why should farmers join?

1. It's free and easy!
2. Connect with more local customers. In the past year the MeatSuite.com farm directory had 8,300 visits from New York consumers. Farm profiles get as many as 25 views per month from potential local customers. We also spotlight MeatSuite farms on social media and bring attention and purchases to farms through highlights and giveaways.

How do I join?

Farmers can visit https://www.meatsuite.com/farmers/ to create a free farm profile. You must list at least one product for your farm's profile to go live. You'll also have access to Cornell's free Meat Price Calculator, a helpful tool for pricing your meat to make a profit.

While you're on MeatSuite, check out the "Creating Consumer-Friendly Bulk Meats" publication on the log-in page. It has tips on how to create bulk meat products that are easier for first-time buyers to say "yes" to.

If you have any questions as you create your farm profile or products, we're here to help! Please email Matt LeRoux at mnl28@cornell.edu.


Spotted Lanternfly

Lycorma delicatula, or Spotted Lanternfly (SLF), is an invasive plant hopper from Asia and is an agricultural pest. In the United States, it was first found in Pennsylvania in 2014. Spotted Lanternfly has been found in New York State on Staten Island, all New York City boroughs, Long Island, Port Jervis, Sloatsburg, Orangeburg, Ithaca, Binghamton, Middletown, Newburgh, Highland, and the Buffalo area. SLF threatens the agriculture and forestry industries, and is also a nuisance pest. The nymphs and adults feed on over 70 different plants, but is especially detrimental to grapes, a black walnut, hops, maple trees and apples. New York State Ag and Markets supported CCE efforts to help bring awareness to communities and we developed this Public Service Announcement and would appreciate you sharing it with your member lists. 



CCE Livestock Program Work Team

See the Livestock Program Work Team website for news, upcoming programs, and NYS Slaughterhouse Map.