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

Common Asparagus Beetle Management During Harvest Season

Ethan Grundberg, Vegetable Specialist
Eastern New York Commercial Horticulture

May 9, 2018

The beginning stages of Common asparagus beetle (Crioceris asparagiI) infestations often go unnoticed. Since the beetles have two to three generations per year (depending upon where you are in our region), the population can build quickly over the course of a couple of years and catch growers off-guard at harvest. 

Overwintered adults emerge from their pupae about the same time that asparagus spears begin to push. They quickly begin to feed on the tender shoots causing a sort of rasping damage that browns quickly in the field or post-harvest. The beetles then mate and deposit their eggs in vertical lines along the spears as shown in the image. After about a week, those eggs hatch into small grubs that continue to feed on spears before pupating in the soil. 

Though the larvae, not adults, are most susceptible to insecticides, growers experiencing significant early damage (the economic threshold is suggested to be when 5%-10% of spears have adults present) may need to use an insecticide to knock down the adults before targeting larvae and later generations on ferns. Given the need to continue harvesting every 1-2 days (a practice that also helps remove eggs from the field to slow the population growth), a short Pre-Harvest Interval (PHI) and Restricted Entry Interval (REI) are key to selecting an appropriate labeled insecticide. 

The standard insecticide options are pyrethroids (IRAC Group 3A), such as Pounce 25 WP and other labeled permethrin formulations (1 day PHI, 12 hour REI) or PyGanic 5.0 (OMRI, 0 day PHI, 12 hour REI). Some neonicitnoids (IRAC Group 4A), such as Assail 70 WP and Anarchy 30 SG (both acetamiprid), are also labeled for asparagus beetle adults and larvae during harvest (1 day PHI, 12 hour REI). Lannate (methomyl, IRAC Group 1A), is also options if you are willing to equip the harvest crew with early entry PPE (1 day PHI, 48 hour REI) to continue removing egg masses on cut spears. An easier option for those looking to use an organophosphate is Sevin XLR Plus (carbaryl, 1 day PHI, 12 hour REI). Note that Lorsban (chlorpyrifos) is sometimes recommended in other states, but IS NOT allowed for use on asparagus in New York. 

For heavily infested fields, continue scouting the asparagus after harvest and target second and/or third generations with any of the options listed above or with IRAC Group 5 spinosyns, such as Radiant or Entrust (OMRI), both of which have a 60 day PHI. Cleaning fields of old stalks after mowing in the fall can also help reduce the overwintering populations.  

Image 11. Common asparagus beetle adults feeding on an emerging spear
Image 22. Grayish colored asparagus beetle eggs visible in a vertical line on a young spear




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