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PRIVATE PESTICIDE APPLICATOR SURVEY INDICATES FARMER WEED MANAGEMENT PRACTICES AND CHALLENGES

Applied Research

Lizabeth Stahl
Extension Educator - Crops
University of Minnesota
Sherburn

Abstract

Each year, farmers who attend Private Pesticide Applicator workshops across Minnesota participate in an Integrated Pest Management (IPM) assessment that is incorporated into the program.  Private Pesticide recertfication is on a three-year cycle in Minnesota, so the group surveyed every three years is similar (e.g. an average of 81% of the farmers surveyed in 2020 attended a workshop three years prior).  Each attendee is handed a Turning Technologies ResponseCard at the beginning of the workshop to answer questions throughout the program.  Participation is voluntary and anonymous.  Survey results illustrate the challenges farmers are facing in weed control, with weed control being the most common top production issue in soybean from 2017 (42% of respondents) to 2020 (60% of respondents).  Farmers are utilizing a number of non-chemical tactics to manage weeds (81, 81, 73, and 82% of respondents in 2017, 2018, 2019, and 2020, respectively), with altering the crop rotation (21, 29, 29, and 33% of respondents in 2017, 2018, 2019, and 2020, respectively) and hand-pulling weeds (24, 37, 30, 29% of respondents in 2017, 2018, 2019, and 2020, respectively) being the most common.  Each year the vast majority of farmers report they believe they have herbicide-resistant weeds (80, 81, 83, and 83% in 2017, 2018, 2019, and 2020, respectively), with glyphosate-resistance being the most common issue (73, 77, 81, and 75% of respondents in 2017, 2018, 2019, and 2020, respectively).  Likely in response to the prevalence of glyphosate-resistant weeds, farmers report they plan to use less glyphosate-only herbicide-resistant traits, while increasing use of the Enlist™ and LibertyLink®/LL-GT27® herbicide-resistance traits.  Results of this survey have been useful in guiding educational programming efforts around the management of herbicide-resistant weeds and prioritizing research and education efforts in the development of relevant, robust, and effective weed management systems.

Poster has NOT been presented at any previous NACAA AM/PIC

This poster is being submitted for judging. It will be displayed at the AM/PIC if not selected as a State winner. The abstract will be published in the proceedings.

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Authors: L.A.B. Stahl, L.M. Behnken, R.P. Miller, D.A. Nicolai, A.J. Peltier, J.J. Goplen, Anthony A. Hanson
  1. Stahl, L. Extension Educator - Crops, University of Minnesota, Minnesota, 56187
  2. Behnken, L. Retired Extension Educator - Crops, University of Minnesota, Minnesota, 55903
  3. Miller, R. Extension Educator - Crops, University of Minnesota, Minnesota, 55903
  4. Nicolai, D. Extension Educator - Crops, University of Minnesota, Minnesota, 55024-8087
  5. Peltier, A. Extension Educator - Crops, University of Minnesota, Minnesota, 56716
  6. Goplen, J. Extension Educator - Crops, University of Minnesota, Minnesota, 56267
  7. Hanson, A. Extension Educator - Field Crops & Integrated Pest Management, University of Minnesota, Minnesota, 56267