Fertiliser spreaders for compact tractors under 40hp range from 300-litre tow-behind units to 900-litre hydraulic hoppers, and the wrong pick either sits idle behind a tractor that can't run it or dumps fertiliser in stripes because the drive type doesn't suit your ground speed. This guide ranks the models that genuinely fit sub-40hp New Zealand tractors in 2026, with capacity, drive type and a straight verdict on each.
- PTO Spreader 340L is the best fertiliser spreader for compact tractor owners under 30hp on a budget β Buy.
- Iris ILS200S 300L tow-behind needs no PTO or hydraulics β Buy for ATVs and sub-25hp tractors.
- PTO Fertiliser Spreader 530L covers small-block pasture work off the standard three-point linkage β Buy.
- Iris ILS3000H 900L needs rear hydraulic outlets most under-40hp tractors don't carry β Skip unless yours does.
- Multi Spreader IOD-600-J 780L adds capacity but the loaded weight tests a lighter tractor's lift arms β Hold.
Why this matters
A compact tractor under 40hp has a lower lift capacity, often no rear hydraulic remotes, and a slower PTO speed than the mid-size tractors most spreaders are actually engineered for. Buy a 900-litre hydraulic hopper for a 28hp tractor and you'll spend more time chasing hydraulic fittings than spreading fertiliser.
The fertiliser spreader guide for small-scale sheep and beef farms covers paddock-scale spreading in more depth. This page narrows it down to the specific models that fit compact and sub-compact tractors without pushing the lift arms or the PTO past what a sub-40hp tractor is built for.
Capacity matters less than drive type here. A ground-driven spreader runs off the wheel or the ground contact, so it needs no PTO shaft and no hydraulic remote β that alone rules out half the spreader market for tractors that came without rear hydraulics fitted from the factory.
How we ranked
Each model on this list is scored against three things a sub-40hp compact tractor actually has to offer: three-point linkage lift capacity, PTO availability at safe RPM, and whether rear hydraulic remotes are fitted at all. Ground-driven and tow-behind units score higher by default because they sidestep two of those three constraints entirely.
Capacity and price come from the current NZ lineup as listed in 2026. Where a spreader needs hydraulics or a heavier PTO shaft to run, it's marked down regardless of how much fertiliser it can hold β a spreader you can't run isn't a spreader, it's a paddock ornament.
The ranked list
1. PTO Spreader 340L β the budget pick
The PTO Spreader 340L is the smallest PTO-driven hopper in the lineup, built for tractors already running other three-point PTO implements at low ground speed. A 340-litre hopper suits lifestyle blocks doing regular small-batch applications rather than one big annual spread.
It asks less of the tractor than any hydraulic unit on this list β no remotes, just a standard PTO shaft. Verdict: Buy if your tractor is sub-30hp and you'd rather run little and often than fill a big hopper twice a year.
2. Iris ILS200S 300L Ground-Drive Tow-Behind β the no-PTO pick
The Iris ILS200S is a 300-litre ground-driven, tow-behind spreader built for tractors, UTVs and ATVs, priced at NZ$3,995. It needs no PTO and no hydraulics at all β spreading is driven purely by wheel rotation as you tow it.
That makes it the only unit on this list that will run behind a sub-25hp tractor, a ride-on mower, or a farm UTV without modification. Verdict: Buy if your tractor has no rear hydraulics or you want one spreader that also works behind the farm quad.
3. PTO Fertiliser Spreader 530L β the mid-size workhorse
The PTO Fertiliser Spreader 530L steps up hopper size to 530 litres while staying on standard three-point linkage and PTO drive, no hydraulic remotes needed. It's the natural next size up once a 340L hopper means too many refills for the block size you're covering.
The bigger hopper still mounts on Cat 1 linkage, so lift capacity on most 30-40hp compact tractors handles it loaded. Verdict: Buy for lifestyle blocks and small farms running one to two hectares per fill.
4. Iris ILS2200 Ground-Drive Lime Spreader 500L β the lime specialist
The Iris ILS2200 is a 500-litre ground-driven lime spreader with a 2-metre working width, mounted on three-point linkage (Cat 1 and Cat 2), priced at NZ$4,395. Like the ILS200S, it needs no PTO or hydraulics β the ground-drive mechanism handles the spreading action.
At 500 litres it holds more per fill than the ILS200S while staying off both PTO and hydraulics, which is the combination most under-40hp buyers are actually chasing. Verdict: Buy if lime and granular fertiliser are your main jobs and your tractor lacks rear remotes.
5. Multi Spreader IOD-600-J 780L PTO β the capacity stretch
The Multi Spreader IOD-600-J holds 780 litres with a removable side-dressing attachment for spreading lime, fertiliser or compost, priced at NZ$8,995. It's PTO-driven, which keeps it off the hydraulics list, but 780 litres loaded is meaningfully heavier on the three-point linkage than anything else ranked above it.
A lighter sub-30hp tractor will feel that weight on the lift arms well before the hopper runs empty. Verdict: Hold β fine for tractors at the top end of the under-40hp bracket, risky for anything lighter.
6. Iris ILS3000H 900L Hydraulic Lime Spreader β the tractor you don't have yet
The Iris ILS3000H is a 900-litre hydraulic-drive lime spreader on three-point linkage (Cat 1 and Cat 2), priced at NZ$6,295. Unlike the spinner-type units above it, it needs a rear hydraulic remote to run at all.
Most sub-40hp compact tractors sold without a loader or grader blade attachment simply don't have that remote fitted. Verdict: Skip unless your tractor already runs hydraulic remotes β otherwise it's the cheapest spreader on this list that you can't actually operate.
Comparison table
| Model | Capacity | Drive type | Price (2026) | Verdict |
|---|---|---|---|---|
| PTO Spreader 340L | 340L | PTO | Not listed | Buy |
| Iris ILS200S | 300L | Ground/tow | NZ$3,995 | Buy |
| PTO Fertiliser Spreader 530L | 530L | PTO | Not listed | Buy |
| Iris ILS2200 | 500L | Ground-drive | NZ$4,395 | Buy |
| Multi Spreader IOD-600-J | 780L | PTO | NZ$8,995 | Hold |
| Iris ILS3000H | 900L | Hydraulic | NZ$6,295 | Skip |
βIf the spreader needs hydraulics your tractor doesn't have, it isn't a compact tractor spreader, it's a shed ornament.β
Where to buy
- Check your tractor's rear linkage lift capacity against the spreader's loaded weight, not just the empty weight on the spec sheet.
- Confirm Cat 1 versus Cat 2 pin sizing before ordering β mismatched linkage pins are the most common return reason on spreader orders.
- Buy from a retailer that ships fertiliser spreaders NZ-wide and can talk through PTO versus ground-drive fit for your specific tractor model before you pay.
FAQ
What's the best fertiliser spreader for a compact tractor under 40hp?
The Iris ILS2200 500L ground-drive spreader and the PTO Fertiliser Spreader 530L are the two best-suited options for 2026, since both mount on standard three-point linkage without needing hydraulic remotes. Choose the ILS2200 if your tractor has no PTO available; choose the 530L if it does.
Is a ground-drive or PTO spreader better for a compact tractor?
Ground-drive suits compact tractors without rear hydraulics or a spare PTO output, since it runs off wheel rotation alone. PTO-driven spreaders like the 340L and 530L give steadier spread rates but require a working PTO shaft at safe RPM.
How much does a fertiliser spreader cost in NZ in 2026?
Fertiliser spreaders suited to sub-40hp compact tractors run from NZ$3,995 for a 300L tow-behind unit up to NZ$8,995 for a 780L PTO model with side dressing. Larger hydraulic and disc spreaders built for bigger tractors cost more again.
Can I run a fertiliser spreader on a tractor with no rear hydraulic outlets?
Yes, but only a ground-driven or PTO-driven model, not a hydraulic-drive spreader like the Iris ILS3000H. The Iris ILS200S and Iris ILS2200 both spread without needing any hydraulic remote at all.
What size fertiliser spreader do I need for a 4-hectare lifestyle block?
A 500-530L spreader covers a 4-hectare block in one or two fills for most granular fertiliser applications. Going smaller means more refill stops; going bigger adds weight your linkage may not need to carry.
Is a tow-behind spreader as good as a 3-point linkage spreader?
A tow-behind spreader like the Iris ILS200S trades precision for flexibility, since it works behind ATVs and ride-on mowers as well as tractors. A three-point linkage spreader sits closer to the tractor's centre of gravity and handles slopes better.
How do I calibrate a tractor fertiliser spreader?
Calibration means weighing a measured amount of product through the spreader at your working ground speed and adjusting the gate opening until the output matches your target rate per hectare. Every spreader on this list needs recalibrating whenever you switch fertiliser types, since granule size changes flow rate.
What HP tractor do I need for a 780L PTO spreader?
A 780L spreader like the Multi Spreader IOD-600-J is workable on tractors at the upper end of the under-40hp bracket, but the loaded weight tests the lift arms on anything under roughly 30hp. Lighter tractors are better matched to the 500-530L options.
One last thing
The two ground-driven units on this list, the Iris ILS200S and the Iris ILS2200, both spread without touching a PTO shaft or a hydraulic remote at all β that's the real dividing line for under-40hp buyers, not hopper capacity. Most compact tractors sold without a loader or grader blade never got rear hydraulics fitted, which quietly rules out half the fertiliser spreader market before price even comes into it. Check what your tractor actually has fitted before you fall for a bigger hopper.