YEOMANS PLOW Co.

The Keyline Plow


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The Red Book
& Prices

The RED BOOK is a booklet with pictures illustrating the variety of plows we make and the range of points and components that can go with them.

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Deciding Your Plow Configuration

How many horse power per tine (or shank or leg). Whether a three point linkage plow or a trailing model. Size of tines to suit. And other things to ponder and decide on.

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Using a Yeomans Plow

When do I first use it. What's a suitable speed. How deep should I go. What points to use. Do I need coulters. And lots of other things it's nice to know.

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An Academic’s Keyline Assessment

The late Professor J. MacDonald-Holmes was Dean of the Faculty of Geography, University of Sydney and a truly great Australian. He followed the development of P.A Yeomans' Keyline principles from their inception in the late 1940s.

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Creating Fertility. Locating Keylines

Allan Yeomans describes, in basic terms what fertile soil really is and why it is possible and practical to massively enhance the fertility levels of farm soil. Also here, is a description of valley forms and where the Keyline is, and why and how it works. And how to find it.

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The Subsoil Plow Story

Keyline cultivation required a plough that didn't turn the soil layers upside down. We looked everywhere. The Texas made Graham-Hoeme Chisel Plow was the only thing we could find available anywhere in the world. We got one and used it, and then made them under license. And sold them here in Australia in the thousands. And that's why I still spell it "plow".

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Video Library

A collection of relevant plow and Keyline footage and links to YouTube. Some filmed in the 1950s. Others by Darren Doherty, a long time friend of mine and a Keyline and Permaculture guru.   The Keyline concepts of farm planning, water storage and handling, accelerated soil fertility enhancement and rotational grazing, were developed on our family farms in the early 1950s.   In the 1980s, by combining these experiences with gliding meteorology I conceived the concept of enhancing soil fertility to stop global warming. Allan Yeomans 2016

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Yeomans Keyline Systems Explained

The Keyline system has changed only slightly from my father, P.A, Yeomans' original books on Keyline. The main change started in the late 1960s with our work on developing a ripper with almost zero disturbance of soil layer profiles. The modern subsoiler was born and highly accelerated Keyline soil fertility enhancement became possible and practical.

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Contacting Us

Yeomans Plow Co. 29 Aubigny Crosshill Road Aubigny, QLD 4401 Australia 07 55 716 544

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PAYING FARMERS TO END CLIMATE CHANGE

To end Climate Change we pay our farmers $10 a tonne - carbon dioxide equivalent - for increasing the carbon content of their soils.  The best and most consistent measuring process for measuring this carbon increase is by measuring the Loss On Ignition (LOI) of a representative  sample of the soil. Our 'Carbon Still' does the measuring.

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Cheap Solar Thermal Electricity

The only significant factors in determining the sale price of the power produced from a solar thermal installation is the cost to cover deprecation and the amount of interest on the money used to build it. That's where our Yeomans system out shines them all.

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Digga Australia Welcomes Yeomans Plow Co to the Family

Digga Australia is proud to announce the acquisition of Yeomans Plows, one of Australia’s most respected agricultural equipment brands, further strengthening its commitment to Australian manufacturing and its expansion into the agricultural sector.

 

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3. Using a Yeomans Plow 4. An Academic’s Keyline Assessment 5. Creating Fertility. Locating Keylines 6. The Subsoil Plow Story 7. Video Library 8. Yeomans Keyline Systems Explained 9. Contacting Us

61(0)755716544
2. Deciding Your Plow Configuration 1. The Red Book
& Prices
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Digga Australia Welcomes Yeomans Plow Co to the family.

Monday, 9 March, 2026

Digga Australia is proud to announce the acquisition of Yeomans Plows, one of Australia’s most respected agricultural equipment brands, further strengthening its commitment to Australian manufacturing and its expansion into the agricultural sector.

As part of the acquisition, Yeomans Plows products will be manufactured and sold by McCormack Industries (A trading entity of Digga Australia) at its Aubigny facility on Queensland’s Darling Downs, ensuring the continuation of local production and the preservation of the brand’s 75-year heritage

Yeomans Plows is widely recognised for its industry-leading soil management and land regeneration equipment, with a proud history of innovation and performance in Australian agriculture. The brand’s values and philosophy closely align with those of Digga Australia and McCormack Industries — all three being family-owned Australian manufacturers with industry-leading products and generations of industry experience.

Digga Australia Group CEO Zoe Conde said the acquisition was a natural fit.

“Yeomans is an iconic Australian brand with a long history of delivering proven results for farmers,” she said. “Bringing Yeomans into the Digga family allows us to protect their legacy while investing in its future. With manufacturing moving to McCormack’s facility, customers can be confident the brand will continue to be built locally, by people who understand Australian farming and conditions.”

The acquisition complements the existing McCormack Industries product range and builds on Digga’s strategy of aligning with brands that share common values of quality, durability, and Australian manufacturing.

Yeomans Plows will be a product group under the McCormack Industries trading entity, with customers and dealers supported by the manufacturing capability and national reach of McCormack Industries and the wider Digga Australia Group.