# Yeomans Plow Co. — Full Content Export > Australian-manufactured deep tilling subsoil plows since 1954. Yeomans Plows are designed to improve soil structure, increase water retention, and build long-term farm productivity using Keyline principles developed by P.A. Yeomans. Used in more than 50 countries worldwide. --- ## About the Company ### [About Us](https://yeomansplow.com.au/about-us/) Yeomans Plow Co. is an Australian manufacturer of subsoil and deep tilling implements. The company is built on the agricultural philosophy and engineering innovations of P.A. Yeomans, who developed the Keyline System — a method of farm planning and soil cultivation designed to dramatically improve soil fertility and water retention. ### [History of Yeomans Plow](https://yeomansplow.com.au/history/) From early chisel plows to advanced subsoiling tools, the Yeomans Plow has evolved over decades of real-world use. The plow was engineered to improve soil profile, water distribution, and regenerative farm performance with minimal surface disturbance. The modern subsoil plow as we know it today was born from this continuous development. ### [Our Vision](https://yeomansplow.com.au/our-vision/) Yeomans Plow Co. is committed to building long-term soil health through low-disturbance cultivation based on Keyline principles. The vision centres on helping farmers improve productivity sustainably, without relying on chemical inputs. ### [The Subsoil Plow Story](https://yeomansplow.com.au/the-subsoil-plow-story/) The story of how the Yeomans Plow was engineered to improve water infiltration, build soil fertility, and increase farm productivity with minimal disturbance. Covers the development of near-zero disturbance subsoiling and how it transformed Keyline soil fertility enhancement from theory into practical farming reality. --- ## Why Yeomans ### [What Makes a Yeomans Plow Different](https://yeomansplow.com.au/why-yeomans/) For more than 70 years, Yeomans Plows have been purpose-built to improve soil structure, fertility, and water management with the least possible disturbance. The Yeomans Plow is not a modified ripper or chisel plow — it is a dedicated soil-building implement refined over decades of use across thousands of farms and more than 50 countries. Key differences include: - The thinnest working shank in its class, displacing less soil and reducing surface heave - Soil is lifted and fractured, not inverted — preserving the living soil ecosystem - Existing roots are flexed, not torn out, allowing rapid plant recovery - The classic Yeomans effect: ground rises gently behind the shank and settles back softer, aerated, and biologically active while the surface remains largely intact - Award-winning innovative designs with proven Keyline engineering for superior soil and water performance --- ## Information Pages ### [Using a Yeomans Plow](https://yeomansplow.com.au/using-a-yeomans-plow/) A comprehensive guide to operating a Yeomans Keyline Plow. Key guidance includes: - Start immediately when the plow is delivered — do not wait for rain - The purpose of Keyline cultivation is to ensure the next rains are absorbed and stored in the soil, not lost as runoff - Exceptions: on grazing land with no rainfall expected for months, or in extremely dry hard soil, wait until some soil moisture is present but do not wait for wet conditions - After heavy rain, soils can be waterlogged and short of oxygen — wait until surface has dried enough that tyres do not sink before plowing - Covers working depth, speed, shank spacing, and seasonal timing ### [Deciding Your Plow Configuration](https://yeomansplow.com.au/plow-configuration/) A practical guide to configuring a Yeomans Plow covering: - Horsepower per shank: each shank requires approximately 7–15 horsepower (Drawbar HP); initial requirements can be 20–30HP; recommended starting point is approximately 10HP per shank - Always size conservatively — fewer shanks at comfortable pulling depth is better than too many - How to choose between three-point linkage and trailing plow models - What size shanks to use for different soil types and applications - Whether coulters are needed and when to add accessories such as crumble rollers and fertiliser boots ### [Creating Fertility](https://yeomansplow.com.au/creating-fertility/) Explains how soil fertility is created rather than bought. Key principles: - Most soils already contain everything plants need — what is missing is space, air, water, and biological life - Keyline cultivation and the Yeomans Plow accelerate a natural process that has always been the foundation of productive farming - The goal is turning biologically inactive subsoil into living, humus-rich productive soil - Fertility builds itself when soil biology is given the right conditions — quickly, safely, and permanently - Covers the role of aerobic soil life, organic matter, and low-disturbance cultivation in building long-term productivity ### [Yeomans Keyline Systems Explained](https://yeomansplow.com.au/yeomans-keyline-systems-explained/) A detailed overview of the Keyline System developed by P.A. Yeomans. The system has two facets: - The FIRST teaches how soil fertility can be rapidly, permanently, and cheaply enhanced through low-disturbance subsoiling that accelerates biological activity and organic matter accumulation - The SECOND teaches how the natural topography of the land can be used to plan farm layout — including dams, irrigation, roads, fences, buildings, and tree lines - Keyline planning uses the form and shape of the land to distribute water evenly and build fertility across the whole property - Keyline topographical concepts are taught in university town planning and agricultural courses worldwide - The modern subsoil plow was developed in the late 1960s by the Yeomans family, enabling highly accelerated Keyline soil fertility enhancement ### [Locating Keylines](https://yeomansplow.com.au/locating-keylines/) Practical guidance on how to locate keylines on a property. Keylines are specific contour lines on the landscape derived from the shape of the valley — they form the basis for Keyline cultivation patterns that distribute water laterally across slopes rather than allowing it to run off. ### [An Academic's Keyline Assessment](https://yeomansplow.com.au/an-academics-keyline-assessment/) An academic review of Keyline methodology, providing scientific assessment of the principles behind Keyline cultivation and the measurable results it produces in soil structure, water retention, and biological activity. ### [What Plow Do I Need](https://yeomansplow.com.au/what-plow-do-i-need/) A selection guide to help farmers and growers choose the right Yeomans Plow for their property, tractor horsepower, soil type, and intended use — from small hobby farm plows through to large trailing implements for broadacre and difficult ground. ### [Resources](https://yeomansplow.com.au/resources-2/) Additional reference material on Keyline farming, subsoil cultivation, and Yeomans Plow products. --- ## Products — Plows: Three-Point Linkage ### [GP39 Plow](https://yeomansplow.com.au/product/gp39-plow/) General purpose three-point linkage Keyline plow. Suitable for a wide range of farm applications. Available in multiple shank configurations. ### [JA Plow — Arched Beam](https://yeomansplow.com.au/product/ja-plow-arched-beam/) Three-point linkage Keyline plow with arched beam configuration. The arched beam provides additional clearance for residue flow and stump jump shank operation. ### [J Plow — Flat Beam](https://yeomansplow.com.au/product/j-plow-sugar-cane/) A purpose-built two-beam, three-point linkage Keyline plow developed primarily for row-crop cultivation with a strong focus on Australian sugar cane farming. The flat-beam configuration provides a simple, strong, and adaptable platform for cultivation within established rows where overhead clearance is not required. ### [L43 Plow](https://yeomansplow.com.au/product/l43-plow/) Compact three-point linkage Keyline plow suited to smaller tractors and properties. ### [L60 Plow](https://yeomansplow.com.au/product/l60-plow/) Mid-size three-point linkage Keyline plow for medium horsepower tractors. ### [L65 Plow](https://yeomansplow.com.au/product/l65-plow/) Three-point linkage Keyline plow for a wide range of farm cultivation applications. ### [L65 Stump Jump Plow](https://yeomansplow.com.au/product/l65-stump-jump-plow/) Three-point linkage Keyline plow with stump jump shank capability, allowing operation in rocky or root-laden ground without damage to the implement. ### [P40 Picnic Plow](https://yeomansplow.com.au/product/p40-picnic-plow/) Compact Keyline plow designed for small properties, hobby farms, and lifestyle blocks. Suited to low horsepower tractors. ### [R56 Plow — Raspberry](https://yeomansplow.com.au/product/r56-plow/) A compact, three-point linkage Keyline plow specifically designed for narrow-row horticulture and permanent cropping systems and small low horsepower tractors. With a 56-inch (1.42 m) frame width, the R56 is ideally suited to raspberries, blackberries, vineyards, orchards, hobby farms and market gardens where precision cultivation and minimal surface disturbance are critical. ### [SB Series](https://yeomansplow.com.au/product/sb-series/) The SB Series of three-point linkage Keyline plows, available in multiple configurations for different tractor horsepower and application requirements. --- ## Products — Plows: Trailing ### [T74 Trailing Plow](https://yeomansplow.com.au/product/t74-trailing-plow/) Trailing Keyline plow for medium to large tractors. Trailing configuration provides better depth consistency and tracking on uneven terrain compared to three-point linkage. ### [T74 Stump Jump Plow](https://yeomansplow.com.au/product/t74-stump-jump-plow/) Trailing Keyline plow with hydraulic stump jump shank capability for operation in rocky or difficult ground. ### [T92 Trailing Plow](https://yeomansplow.com.au/product/t92-trailing-plow/) Large trailing Keyline plow for high horsepower tractors and broad cultivation work. ### [T123 Trailing Plow](https://yeomansplow.com.au/product/t123-trailing-plow/) Heavy-duty trailing Keyline plow built for large-scale cultivation. ### [T123 Stump Jump Plow](https://yeomansplow.com.au/product/t123-stump-jump-plow/) A large-capacity, heavy-duty Keyline plow engineered for growers and contractors working in rocky, stump-laden, or otherwise difficult ground where conventional rigid shanks are impractical. Built around a three-beam trailing frame with 123-inch (3.12 m) front-to-rear beam spacing, providing exceptional internal clearance for stump jump shank operation, wheel placement, and residue flow. Maintains depth consistency and tracking stability across uneven terrain and long working runs. ### [T123 Folding Wing Plow](https://yeomansplow.com.au/product/t123-folding-wing-plow/) Large trailing Keyline plow with folding wing configuration for road transport and increased working width. --- ## Products — Plow Accessories ### [Depth Control System](https://yeomansplow.com.au/product/depth-control-system/) Designed to maintain consistent working depth across varying soil conditions, ensuring uniform cultivation and optimal soil structure development. Controls how deep the plow works to improve efficiency, reduce operator fatigue, and deliver consistent results pass after pass. ### [Fertiliser Boot](https://yeomansplow.com.au/product/fertiliser-boot/) Allows fertiliser to be applied directly into the soil profile during cultivation — improving efficiency while delivering nutrients precisely where plant roots can access them. Mounted behind the shank, the boot combines soil development and nutrient placement in a single pass. ### [Crumble Roller](https://yeomansplow.com.au/product/crumble-roller/) Roller attachment that follows the plow to break down clods and firm the soil surface after cultivation. ### [Coulters](https://yeomansplow.com.au/product/coulters/) Disc coulter attachments that cut through surface residue ahead of the shank, improving penetration and reducing blockage in high-residue conditions. ### [Slow Seeder](https://yeomansplow.com.au/product/slow-seeder/) Seeder attachment allowing seed to be placed into the soil profile in the same pass as cultivation. ### [Disc Hillers](https://yeomansplow.com.au/product/disc-hillers/) Disc hiller attachments for row-crop applications requiring soil to be mounded around plant rows. ### [Stealth Hillers](https://yeomansplow.com.au/product/stealth-hillers/) Low-profile hiller attachments designed for minimal surface disturbance in sensitive cropping systems. ### [Adjustable Hillers](https://yeomansplow.com.au/product/adjustable-hillers/) Adjustable hiller attachments that can be set to different row spacings and hilling angles. ### [Shakaerator](https://yeomansplow.com.au/product/shakaerator/) Cultivation attachment that provides an oscillating action to further loosen and aerate soil. ### [Batswing](https://yeomansplow.com.au/product/batswing/) Batswing attachment for specialised cultivation applications. ### [Slitter Blade](https://yeomansplow.com.au/product/slitter-blade/) Slitter blade attachment for cutting through compacted layers ahead of the main shank. ### [Rear Mounting System](https://yeomansplow.com.au/product/rear-mounting-system/) Rear mounting system for attaching accessories to the back of Yeomans Plow frames. ### [AJ50 Adaptor](https://yeomansplow.com.au/product/aj50-adaptor/) Adaptor component for AJ50 plow configurations. --- ## Products — Wearparts & Shanks ### [Plow Shanks](https://yeomansplow.com.au/product/plow-shanks/) Replacement shanks for Yeomans Plows. Available in a range of sizes to suit different soil conditions and working depths. ### [Shanks — Stump Jump](https://yeomansplow.com.au/product/shanks-stump-jump/) Hydraulic stump jump shanks that trip and reset automatically when contacting rocks or stumps, protecting the plow frame from damage. ### [Shank Replacement](https://yeomansplow.com.au/product/shank-replacement/) Replacement shank components and wear parts. ### [Wombat Plow Point](https://yeomansplow.com.au/product/wombat-plow-point/) The Wombat plow point — a heavy-duty wear point designed for long service life in abrasive soils. ### [Points — Tadpole](https://yeomansplow.com.au/product/points-tadpole/) Tadpole profile plow points for standard shank configurations. ### [Points — Stump Jump](https://yeomansplow.com.au/product/points-stump-jump/) Plow points designed for use with stump jump shanks. ### [Leap Frog Points](https://yeomansplow.com.au/product/leap-frog-points/) Leap frog profile plow points for specific cultivation applications. ### [Stump Jump Splitter Blade](https://yeomansplow.com.au/product/stump-jump-splitter-blade/) Splitter blade attachment for stump jump shanks to assist with residue and root management. ### [Bridge Lock](https://yeomansplow.com.au/product/bridge-lock/) Bridge lock component for securing shanks in the plow frame. ### [Shear Pin](https://yeomansplow.com.au/product/shear-pin/) Replacement shear pins — a safety component that protects the plow frame by breaking before damage occurs on impact. ### [Weed Knife](https://yeomansplow.com.au/product/weed-knife/) Weed knife attachment for inter-row weed control during cultivation. ### [Wooble Blade](https://yeomansplow.com.au/product/wooble-blade/) Wooble blade wearpart for specialised cultivation applications. ### [Drift Tool](https://yeomansplow.com.au/product/drift-tool/) Maintenance tool for removing and replacing shank wear parts in the field. --- ## P.A. Yeomans Books ### [The Keyline Plan](https://yeomansplow.com.au/the-keyline-plan-pdf/) P.A. Yeomans' foundational book laying out the principles of Keyline design — covering farm water management, soil fertility, and topography-based farm planning. Available as a free PDF download. ### [The Challenge of Landscape](https://yeomansplow.com.au/the-challenge-of-landscape-pdf/) P.A. Yeomans on landscape management, land use, and the role of water in building productive and resilient farms. Available as a free PDF download. ### [The City Forest](https://yeomansplow.com.au/the-city-forest-pdf/) P.A. Yeomans on urban forestry, the urban environment, and landscape. Available as a free PDF download. --- ## Contact & Enquiries - [Get a Plow Quote](https://yeomansplow.com.au/get-plow-quote/) - [General Enquiry](https://yeomansplow.com.au/general-enquiry/) - [Contact Us](https://yeomansplow.com.au/contact-us/)