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; 1151KB)

Enrollee Login

Password:

Log In To Access:

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

Not an Enrollee? Enroll Now!

Online Enrollment Form

Onion Thrips Management Recommendations for 2018

Ethan Grundberg, Vegetable Specialist
Eastern New York Commercial Horticulture

June 7, 2018

Most larger scale onion growers in the region are already familiar with Dr. Brian Nault's insecticide sequence recommendations for onion thrips management. However, more products have been registered in New York in the last few years that provide alternative options for conventional thrips management (specifically Exirel and Minecto Pro). It's worth keeping in mind that Dr. Nault's recommendations are based on two primary principles:

 

  • Scouting and only spraying at threshold: The days of calendar sprays are long gone. Given the cost of some of the newer chemistries used for thrips management, growers must scout fields and confirm that thrips populations have reached a level of at least an average of 1 thrips per leaf before spraying. Spraying before thresholds are reached not only weakens the resistance management strategy (see point 2), but also cuts into grower profits by unnecessarily increasing the number of insecticide applications each year.


  • Resistance management: Onion thrips produce multiple generations each year. They also develop resistance to insecticides more readily than other pests that reproduce more slowly.  One of the goals of the recommended insecticide sequence is to avoid exposing multiple generations per year to the same insecticide. By avoiding the exposure of multiple thrips generations to the same active ingredients in the same year, growers can help preserve the useful life of insecticides that are effective at managing thrips.

 

The chart that follows outlines several different insecticide sequences developed by Dr. Nault for growers to follow depending upon the severity of thrips pressure in the field. It should be noted that, as indicated below, Minecto Pro is a pre-mix of the same active ingredients found in Agri-Mek and Exirel, so it should NOT be used in sequence with those products. Addtionally, almost all of the insecticides listed in the chart should be used with a non-ionic penetrating surfactant, such as Dyne-Amic or LI700. Only Warrior and Lannate are compatible with spreader-sticker type adjuvants. Since Bravo Weatherstik is formulated with a sticker, it should NOT be mixed with Movento, Minecto Pro, Radiant, Exirel, or Agri-Mek.

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

 

Thrips Management




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

No upcoming events at this time.

Announcements

U-Pick Farm Practices During Covid-19 Pandemic

U-Pick is a critical direct marketing approach for many of our farms and provides
customers with a unique connection to fresh produce grown close to home. In light
of what we understand about the spread of COVID-19, new management practices
will be needed to protect your farm team and your customers. This document
provides recommended practices and communication strategies for U-Pick
operations for the 2020 season.

https://rvpadmin.cce.cornell.edu/uploads/doc_864.pdf

Growers-are you running low on fall pumpkins, etc?

The Produce Auctions located around the state may have what you need.  Check out all of the opportunities here: https://harvestny.cce.cornell.edu/submission.php?id=4

Resources from CCE ENYCHP!

We are developing new ways to connect with the CCE ENYCHP team this year! We have a Youtube page located at this link. Check out videos on Table Grape Production, Pest Updates and the 20 Minute Ag Manager - in 4 Minutes series

We have a Facebook Page here as well as an Instagram page. We keep these places updated with current projects, events, and other interesting articles and deadlines.

There are also text alerts available. Fruit and vegetable farmers in 17 Eastern NY counties can now receive real time alerts on high risk disease and pest outbreaks texted directly to their cell phone. The Eastern NY Commercial Horticulture program, which is supported by local Cornell Cooperative Extension associations, will now offer text alerts to those that enroll in our program in 2019. 

The text alerts will be reserved for important crop alerts that could impact management decisions immediately. For instance, if there were an outbreak of Late Blight in the area, this would be transmitted to vegetable growers.

Farmers can choose the crop for which they wish to receive updates. Additionally they can request that Ag Business Alerts be sent to them. These alerts might include due dates for crop insurance deadlines, market opportunities etc.

If you have questions, please contact enychp@cornell.edu


Podcasts

Onion Thrips and Onion Maggot Management Recommendations with Dr. Brian Nault

May 26, 2021
Onion Thrips and Onion Maggot Management Recommendations with Dr. Brian Nault

Cornell University vegetable entomologist Dr. Brian Nault discusses recommendations for managing onion thrips in 2021 with specialist Ethan Grundberg. Nault and Grundberg review basic principles of resistance management, using action thresholds to time insecticide applications, and season-long pesticide programs for managing thrips before discussing how the upcoming chlorpyrifos ban in New York will impact seedcorn and onion maggot management in 2022 and beyond.

Resources:

Onion Thrips Insecticide Program Flow Chart from Dr. Brian Nault: https://rvpadmin.cce.cornell.edu/uploads/doc_980.pdf

NEWA Onion Maggot Emergence Model: http://newa.cornell.edu/index.php?page=onion-maggot

listen now

read transcript

view all podcasts
NEWSLETTERS  |   CURRENT PROJECTS  |   IMPACT IN NY  |   SPONSORSHIP  |   RESOURCES  |   SITE MAP