JA PLOW – Arched Beam

 

Frame – Manufactured in Australia. The main toolbars are fully welded from 4″ x 4″ 3/8 RHS, while the parameter frame and headstock are made from 4″ x 4″ 1/2 RHS.

Hitch – Heavy duty weld-on hitch to suit Cat2, 3, 3N or quick hitch.

Optional Depth Control – Award winning “Ripple Clamp” system gives 25mm (1″) incremental height adjustment and capable of variable positioning internally or externally of the frame. The sugar cane JA Plow is fitted with 185R14C (8 Ply) tyres on HT holden wheels and hubs.

The Yeomans JA plows feature a two beam configuration with shanks positioned across a single row. Due to front‑to‑rear support beam(s) shanks can only be set at certain equal spacings. These are shown on the table to the left.

The Yeomans JA Series is purpose‑built for Australian sugar cane farming, where cultivation often needs to occur over established cane planted on hills. The defining feature of the JA Series is its central arched frame, which provides increased clearance over cane stools and reduces the risk of crop damage during cultivation. This design allows the plow to be used for stool splitting, side‑row cultivation and centre‑row cultivation across a wide range of growing conditions.

The JA Series is a two‑beam, three‑point linkage plow frame constructed to support multiple shank and coulter positions. It is configured to allow row spacings from 60 inches (1.5 metres) down to 15 inches (375 mm), with shank spacings arranged in 15‑inch (375 mm) multiples. This flexibility allows growers to adapt the plow layout to suit different row spacings, cultivation depths and crop stages.

To extend versatility beyond high‑clearance cane work, the JA frame is supplied with a bolt‑in rear toolbar insert that infills the arch when required. When fitted, this insert extends the usable frame area, allowing configurations of up to five or seven shanks for general cultivation and plow‑out applications. An optional bolt‑in front toolbar insert is also available to further increase configuration options on suitable frames.

The JA Series is designed to accept Yeomans Oyster Clamp shanks, with the 26‑inch shank supplied as standard. The frame is also compatible with 31‑inch shanks and BIG‑Y adjustable shanks. All Yeomans shanks feature the rear track system, allowing infinite vertical adjustment and compatibility with the full range of Yeomans points and adapters. Shanks are clamped to the frame rather than welded, enabling repositioning to suit different spacing and cultivation requirements.

A raised front beam allows the fitment of Yeomans Jungle Coulter Discs, which can be added or removed as required. The JA Series can also be fitted with Yeomans Crumble Rollers in either single or dual configurations, available with manual or hydraulic adjustment, to improve soil finish when deep working under trash blankets common in sugar cane systems.

Why We Prefer Drawbar Horsepower (Not Just Engine Horsepower)

When selecting a Yeomans plow, drawbar horsepower and tractor weight are more important than engine horsepower alone.

A tractor may have sufficient horsepower on paper, but without adequate weight and traction it cannot apply that power effectively. This is especially true for compact utility tractors. For this reason, Yeomans plow selection should be based on usable drawbar horsepower.

How Many Shanks Should I Run?
Depending on soil type, compaction and tractor models, we recommend anywhere from 7-15HP per shank.

Up to 20–30 horsepower per shank may be required for initial cultivation in very compacted or dry hardpan soils. In such situations it is best to order a plow based on the standard recommendation, but start plowing with fewer shanks and re-introduce shanks as soil conditions improve.

With the above in mind, a practical starting point is to allow approximately 10 drawbar horsepower per shank.

Want to learn more on how to select the right plow? Click here