Achieving practice change to limit the development of phosphine resistance

Achieving practice change to limit the development of phosphine resistance in insects of stored grain Jo Slattery Sharyn Taylor Plant Health Australia/CRCNPB biosecurity built on science Cooperative Research Centre for National Plant Biosecurity

Biosecurity issue  Phosphine (PH3) has been widely used for pest management in stored grain  Research and strategies developed for better PH3 management and delivery of consistent messages  Change behaviour through the Grains Knowledge Network project

biosecurity built on science

Grains Knowledge Networks  Investigated pathways for transferring resistance management knowledge to stakeholders; and  Investigated factors that contributed to poor uptake of improved practices for use of phosphine  Strong linkages - GRDC Grains Storage Extension program - Grain Farm Biosecurity Program

biosecurity built on science

Linkages  GRDC grain storage extension program  Provide up-to-date technical, scientific, biosecurity info  Website, research booklets, fact sheets, media articles, industry silo standard, research on alternatives to PH3

 Discussion with grain storage specialists identified a gap - that shows both monitoring and identification of pests

biosecurity built on science

Implementation of recommendations from the GKN  1. Clear guidelines and instructions on correct monitoring and fumigation practices  2. A plain English summary of the phosphine label  Why? These recommendations limit the build up of phosphine resistance

biosecurity built on science

1. ‘Monitoring stored grain on-farm’ manual  Growers best practice manual that presents the issues, options and best practices for the monitoring and identification of pests  Resource tool to support existing methods  Used by the GRDC grain storage extension team and Grains Farm Biosecurity Program

biosecurity built on science

2. Changes to the phosphine label  Why change?  GKN identified that growers are often confused about the impact of PH3 resistance in stored grain pests  Need for a plain English summary - To improve uptake of best practice for grain storage to control insects - For better regulation for the miss-use of PH3 biosecurity built on science

2. Changes to the phosphine label  Why change?  Changes to the label a priority for National Working Party Grain Protection - Fumigants sub-group  Grain storage extension specialists - fumigation in silos not meeting Australian standard (AS2628) biosecurity built on science

2. Changes to the phosphine label ď&#x201A;§ Approach taken - Consultation and engagement with state regulators, researchers, industry personnel, APVMA - PHA led consultation ď&#x201A;§ State regulator group - 6 key jurisdictions - DPI or Health Department

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2. Changes to the phosphine label  State regulator group identified - Stricter use of the words ‘DO NOT’ - Record keeping as a constraint - Change descriptors of ‘well-sealed’ to meet ‘Australian standards’ to allow better regulation - Asked to review the label to enable better regulation biosecurity built on science

2. Changes to the phosphine label

biosecurity built on science

2. Changes to the phosphine label  Technical working group - NWPGP fumigant working group members - updated PH3 label for comment  Review process between the state regulator and technical WGs  Updated version sent all parties

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2. Changes to the phosphine label  Feedback from APVMA on what can and can’t be changed  To meet with WG members this week  Robin Reid/Pat Collins to present the ‘journey’ to industry at NWPGP

biosecurity built on science

Conclusion  Implementation of the GKN project through delivery and adoption of key recommendations 

Deliver a ‘Monitoring of stored grain on-farm’ resource tool

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Adoption of a plain English phosphine label that: - incorporates the Australian standard for gas tight silos; and - reduces confusion of the users of PH3

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Thank you  Cain Roberts, Delivery and adoption  Pat Collins, Grain storage  For more information, please email jslattery@phau.com.au

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Achieving practice change to limit the development of phosphine resistance

Published on Sep 6, 2012

Plant Biosecurity CRC

On-farm grain storage is complex, with many storage options and many factors to consider. Insect infestation is a major issue that contributes to the complexity of grain storage and incorrect use of the fumigant phosphine to control insects is resulting in the development of resistance. If left unaddressed, incorrect use of phosphine may ultimately lead to its loss as a useful tool for growers and bulk handling companies. The project CRC70096 (The Grains Knowledge Networks project, 2008-2010), investigated factors that are contributing to poor uptake of improved practices for use of phosphine within the grains supply chain. Two major factors identified as impeding practice change were the lack of appropriate drivers to encourage or create the need to implement improved practices and also confusion surrounding the information available for use of phosphine.