X
[contact-form-7 id="2714" title="Twenty One PDF"]
  • Facebook
  • Twitter
  • Instagram
  • Linkedin
  • Youtube
Become a Member
  • Facebook
  • Twitter
  • Instagram
  • Linkedin
  • Youtube
Mallee Sustainable Farming
  • Our Work
    • Soils and nutrition
    • Cereals
    • Break Crops
    • Pastures & Livestock
    • Weeds, Pests & Disease
    • Environment
    • Farming systems
    • Mallee Seeps
  • Projects
  • Media
    • News
    • Press Releases
    • E-updates
    • Field days VIC 
  • Events
  • About MSF
    • Our Organisation
    • Meet The Team
    • Meet The Board
    • Membership
    • Sponsorship
    • David Roget Award for Excellence
      • Hall Fame
      • Winner 2020
    • Annual Reports
    • MSF Constitution
  • Virtual Trials
  • Podcast
  • Contact Us
  • Search
  • Menu
  • Publications
    • Research Articles
    • Fact Sheets & Newsletters
    • Annual Reports
    • Other Publications
    • MSF Stubble Guide

Herbicide residues in sandy soils of the Southern region

Authors: Lynne Macdonald1, Rai Kookana1, Nigel Wilhelm2, Therese McBeath1, Rick Llewellyn1

Research Team: Barry Haskins3, Michael Moodie4, Adelle Craig1, Jun Du1

1CSIRO, Waite Campus, 2SARDI, Waite Campus, 3AgGrow Agronomy, Griffith, 4Mallee Sustainable Farming, Mildura

Funded By: GRDC Sandy Soils CSP000203

Project Title: Increasing production on sandy soils – overcoming constraints to poor water use

Peer Review: Lukas van Zwieten, Mick Rose

Key Words: herbicides, residues, sands, sandy soil

Key Messages

  • A study of herbicide residues in sandy soils in the southern low rainfall region found Glyphosate and its breakdown product AMPA at all nine sampled sites.
  • The combined residue load (Glyphosate plus AMPA, 0-30 cm) represented between 0.7 and 6.1 typical applications. The majority (~85%) of the herbicide residue was found in the top 10 cm, and was predominantly AMPA (~80%) rather than Glyphosate.
  • Little is known of the toxic effects of AMPA and how it may affect root growth and function across different crop species. Identifying threshold levels of AMPA that negatively impact crop productivity would be valuable.
  • The study detected Trifluralin (8/9 sites) and 2,4D (4/9 sites) at low concentrations unlikely to be damaging to crops. We did not detect Prosulfocarb, imidazolinones (Imazapic, Imazapyr, Imazamox), Triclopyr, or MCPA. Spray history details are being collated to further understand the Glysphosate results and assess whether non-detection of other herbicide residues is due to infrequent use or to breakdown.
Download the Full Article
Website by Visual Strategy Design © 2021 Mallee Sustainable Farming Inc
| Home | Contact | Privacy Policy | Inc # A0036008Z
Credits
Herbicide efficacy in retained stubble systems Identifying the causes of unreliable N fixation by medic based pastures
Scroll to top