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In-Season Management of Perennial Sow Thistle in Onions, 2013 Trial Results

Christy Hoepting, Extension Vegetable Specialist
Cornell Vegetable Program

March 25, 2014

In-Season Management of Perennial Sow Thistle in Onions, 2013 Trial Results
In-Season Management of Perennial Sow Thistle in Onions, 2013 Trial Results
Perennial sow thistle has increased in economic importance and has become a serious weed problem for muck onion growers in the Western region on New York. In this project, we investigated fall chemical burn down strategies to manage this weed, as well as the use of a synthetic auxin growth regulator type herbicide, trade name Stinger to manage this weed in-season within an onion crop. Crop tolerance to Stinger was also studied.

Following is the FINAL report and the first of 3 complimentary power point presentation files.


Report No. 2: In-Season Management of Perennial Sow Thistle in Onions REPORT (pdf; 221KB)

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Dry Beans

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Lettuce / Leafy Greens

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Pumpkins / Gourds

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Upcoming Events

Vegetable Pest and Cultural Management Meeting for Auction Growers (Ontario)

Event Offers DEC Credits

June 27, 2023
Rushville, NY

This on-farm meeting will feature pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables, primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options such as inter-row cover crops, grafting and, where appropriate, spray options will be used to educate growers. Details on each topic will focus on field observations at the farm.

DEC recertification credits will be offered (1.75 credits in categories 10, 1a, 23, 24). 

view details

Vegetable Pest and Cultural Management Meeting for Auction Growers (FLPA)

Event Offers DEC Credits

July 12, 2023
Penn Yan, NY

This meeting will feature pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables, primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options such as inter-row cover crops, grafting and, where appropriate, spray options will be used to educate growers. 

DEC recertification credits will be offered (1.75 credits in categories 10, 1a, 23, 24). 

view details

Vegetable Pest and Cultural Management Meeting for Auction Growers (Seneca)

Event Offers DEC Credits

August 2, 2023
Romulus, NY

This meeting will feature pest management in fresh market vegetables in both field and greenhouse (high tunnel) vegetables, primarily for those growing for wholesale auction. A hands-on demonstration of weed, insect and disease identification in vegetables including management options such as inter-row cover crops, grafting and, where appropriate, spray options will be used to educate growers. 

DEC recertification credits will be offered (1.75 credits in categories 10, 1a, 23, 24). 

view details

Announcements

Ag Water Test Sample Drop-Off Sites in WNY

If you are curious about the quality of your irrigation ponds, streams, wells, or other surface water source, water testing is an important tool to consider. Getting the right test and doing so in a timely manner has been a challenge. Water testing that provides meaningful results requires a quantified generic E. coli test or an Enumeration E. coli test. Some water testing labs only do a potable water test called a presence/absence test. The Enumeration test provides test results as in numbers of (bacterial) colony forming units (CFU or most probable number MPN). Having a number allows you to track the results with a comparable baseline. Each water source should be tested 3-4 times a season and do this each growing season.

Water testing drop-off/pick-up sites have been set up in a number of locations across the region by Lozier Environmental Consulting in Rochester. Water test sample bottles, forms, and information are available at each site. Additional sites are available:
  • A new site has been added in the greater Lockport (Niagara County) area: Flint Brothers Hardware, 2769 Main St, Newfane, NY, 716-778-9654. Samples must be received at this location by Wednesday 9:00am.
  • If you are in Ontario County, contact Nancy Anderson at the CCE Ontario County office in Canandaigua at 585-394-3977 x427. You can pick up the supplies (forms, bottles, instructions, and takes payment) at the CCE office. You will be required to take your sample(s) to a drop-off site in Canandaigua; the bottles will be picked up and delivered to Life Science Labs in Syracuse for analysis.
For assistance in understanding the water test results, contact Robert Hadad or the lab.


New Ag Climate Factsheet Released

The intersection of agricultural production and greenhouse gases is gathering increasing attention. This is an opportune time to consider how vegetable production interacts with carbon sequestration and greenhouse gas emissions, and how using cover crops may alter this picture.

The factsheet, Greenhouse Gases and Soil Organic Carbon in Vegetable Production and the Role of Cover Crops, written by Zach Spangler, Ag Climate Resiliency Specialist with CCE Harvest NY, and Elizabeth Buck, Fresh Market Vegetable Specialist, CCE Cornell Vegetable Program, discusses:
  • Sequestration of atmospheric carbon in agricultural soils as soil organic carbon (SOC). Is vegetable production impacting SOC?
  • Net greenhouse gas emissions of carbon dioxide (CO2), nitrous oxide (N2O), and methane (CH4) from the soil.
  • Impact of cover crops on soil organic carbon, nitrous oxide emissions, and other GHG emissions.


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