MLA Trace Elements Project

Trace element deficiencies (particularly molybdenum, boron, and sometimes copper) are widespread in Victorian pastures.  Historical data and recent plant tissue tests confirm high levels of molybdenum (≈45%) and boron (≈26%) deficiency and there is evidence that trace element deficiencies have increased because of farming practices. Past large-scale trials (Triple P, Grassland’s Productivity Program) showed that unless all nutrients (including trace elements) are addressed, potential stocking rate gains cannot be achieved. Deficiencies limit pasture growth, clover nodulation, seed set, and ultimately livestock productivity as well as directly impacting on animal performance. Many farmers lack awareness of these deficiencies, and inappropriate or inconsistent supplement use reduces productivity and profitability. Correcting trace element deficiencies offers a high-return, low-cost opportunity to boost pasture and livestock productivity in Victoria.

PROJECT APPROACH

The project, which will run until 2028, will involve the following:

1. Literature Review – Compile updated knowledge on 8 key trace elements (Mo, B, Cu, Zn, Mn, Co, Se, I,) since the publication of “Trace Elements for Pastures and Animals in Victoria” in 1986.
2. Extent of Issues – Review historical lab data, producer records, fertiliser suppliers, and service providers to map trace element deficiencies in pastures and livestock.
3. Professional Insights – Survey agronomists and veterinarians to capture field-level knowledge of deficiencies and treatments.
4. Historic Animal Data – Access diagnostic records from labs (e.g., Agriculture Victoria, Regional Laboratory Services).
5. Diagnostics & Standards – Document changes in diagnostic methods (e.g., tissue testing, liver biopsies) and update interpretation standards.
6. Treatment Options – Review new and updated pasture/animal treatment methods for deficiencies (e.g., foliar applications, selenium chips).
7. On-Farm Demonstration – Work with producer groups and service providers to establish 150+ test strips, train farmers and service providers in pasture sampling, and run practical demonstrations.
8. Extension Materials – Produce 8 fact sheets (one per element) summarising current knowledge.
9. Updated Manual – Revise and publish a new edition of “Trace Elements for Pastures and Animals in Victoria” (2nd edition) incorporating all findings.

WORKSHOPS FOR SERVICE PROVIDERS

In mid-2025, a series of five regional workshops were delivered for agricultural service providers across Victoria. These workshops revisited current knowledge on the incidence of trace element deficiencies and toxicities in pastures and livestock, along with effective treatment options. The content was based on the Trace Elements for Pastures and Animals in Victoria resource.

trace-elements-for-pastures-and-animals-in-victoria-book

An outcome of the project will be the revision of the booklet, incorporating issues raised at the workshops and capturing the knowledge and experience of service providers

Andrew Speirs/Jim Shovelton-Meridian Agriculture Trace Elements presentation

John Webb Ware – Trace elements for livestock presentation 

TEST STRIPS

Test strip kits have been made available through farmer groups and retail networks for producers to put out on their farms.  These strips will demonstrate where trace element deficiencies are occurring and show producers the benefits of correcting deficiencies.

How to set up test strips – CLICK HERE

ASSESSING TEST STRIPS

TAKING TISSUE SAMPLES

MAINTAINING SITE POST TISSUE TESTING

Have Questions? Email traceelements@meridian-ag.com.au