Chain-linked disc cultivators have but to take off within the UK, however their simplicity, reasonable energy requirement and talent to include stubbles at excessive speeds might change that.
The flexibility of those instruments can also be attracting consideration, with their potential to encourage weed seed germination, mulch maize stalks to hamper over-wintering pests, and destroy catch- and canopy crops previous to drilling.
Some even have the choice of including seeder models, making a speedy one-pass system for re-establishing one of these crop.
See additionally: 10 single-pass cultivator choices for heavy land
The idea was conceived by south Australian farmers Shane and Peter Kelly, whose Diamond Harrow has been offered everywhere in the world in myriad widths and disc configurations.
Many Kelly machines are working throughout Europe and there are just a few on UK farms, too.
Plus, its success has prompted just a few rival producers to get in on the sport, two of that are Danish agency Dalbo and German maker Fliegl.
Every of those makers has refined variations of their design, however the primary format is similar.
This consists of a hydraulic-folding body in a cross-formation, to which 4 units of chain-linked discs are slung throughout every nook.
Simply two bearings are required on every gang of discs, one at both finish, which means they flip as a whole unit.
Nevertheless, the truth that the discs are linked by chain-style couplings, means they’ll flex to comply with floor contours.
Operators can alter how aggressively the discs work by altering the stress on the chains, including weights, or switching to a special model of disc.
Most fashions are designed to work at depths of 2-5cm and transfer all soil throughout the width of the machine. Speeds of as much as 18kph are additionally potential and so they are inclined to require tractor energy of about 25hp/m.
This places them someplace between a straw rake and standard set of discs, providing extra soil motion than the previous and quicker working speeds than the latter.
Dalbo is presently the one possibility formally on sale within the UK, however Fliegl sellers ought to be capable of supply machines and Kelly Tillage is on the hunt for a UK importer after ending its take care of Weaving Equipment in 2018.
Dalbo Powerchain 800
Danish cultivation specialist Dalbo launched its Powerchain 800 disc cultivator earlier this 12 months and has a number of demonstrator fashions doing the rounds on stubble incorporation.
At current, the 8m machine is the one measurement supplied by the agency, however each smaller and bigger fashions are on the playing cards.
Central to the machine is a hydraulic folding chassis that shrinks to 3m for transport and incorporates a platform for a cover-crop seeder – Dalbo provides 300-500-litre Einbock models with distribution plates positioned between the entrance and rear discs, however consumers can match a make of their selection.
There are additionally help wheels on both wing to assist carry the burden of the discs.
Fairly than making its personal discs, Dalbo has sourced them from Australian agency Bute. Every chain holds 31-35 models, that are set at a 40deg angle of assault to provide a full reduce throughout the width of the machine.
Chain rigidity is hydraulically adjustable to go well with the circumstances and as much as three 2.4kg weights could be added to every disc to regulate how deeply it really works. Its typical working vary is 2-5cm deep.
The 8m machine weighs about 6t and is designed to work with a 180hp tractor. Checklist value is £57,000.
Fliegl launched its KSE680 disc chain harrow in 2020, which has a working width of 6.8m and 4 gangs of 350mm chain-linked discs.
Its design includes a easy cross-shaped body that has hydraulically suspended wings and has been constructed to deal with working speeds of 10-18kph.
This implies it could actually cowl as much as 12ha/hr in a variety of purposes, from stubble and cover-crop processing to seed-bed preparation and slurry incorporation.
Total weight of the rig is 5.7t, with the discs exerting 120-148kg/m of strain, relying on the setup.
Operators can alter how aggressively it really works because of hydraulic management of chain rigidity and dealing top.
Every chain-linked disc section weighs 2.7kg and they’re hardened to extend their sturdiness. Nevertheless, if a unit does get broken, it’s comparatively straightforward to take away and exchange.
Elective extras embody a second set of weights, a management panel and hydraulic brakes.
Kelly Diamond Harrow
The unique chain-linked Diamond Harrow from Kelly Tillage was designed for large Australian farms, however the agency provides extra compact variations to go well with European circumstances.
These could be fitted with various kinds of discs, together with heavy-duty 360mm CL2s spaced at 215mm to take care of massive quantities of trash or the extra versatile CL1s, that are lighter weight, have a 323mm diameter and are mounted at 163mm spacings.
The corporate has additionally launched a brand new K4 disc that’s comparable in measurement and weight to the CL1 however has a shallower concave (25deg) for higher weed management throughout a wider vary of soils.
Clients get the choice of a spiked disc or prickle chain, too, which carries 132 spikes/m.
Variants embody 6m and 9m models that fold to 2.4m huge and a 12m model that is available in a shade beneath 3m in transport mode.
Energy necessities are 120hp for the 6m, 150hp for the 9m, and greater than 200hp for the largest mannequin. Most working pace is simply over 12kph for a fast one-pass combine.
At current there is no such thing as a UK importer, so consumers must contact the agency immediately to rearrange a purchase order.