Summit Fertilizers · NPK compound · granular
Summit Hay
Summit Hay is a granular npk compound fertiliser from Summit Fertilizers. Its published analysis (N-P-K-S) is 13.6-3.2-16.5-12.7, supplying nitrogen 13.6%, phosphorus 3.2%, potassium 16.5%, sulphur 12.7%, zinc 0.03%, copper 0.02%. We hold no verified price for it.
% nitrogen – phosphorus – potassium (N–P–K)
13.6–3.2–16.5
Last checked 2026-10-17 · How we check · Report an error
At a glance
| Brand | Summit Fertilizers |
|---|---|
| Type | NPK compound |
| Form | granular |
| We list it under | Paddock crops |
| Organic-certified | Not stated |
| Pack sizes | Not verified |
| Safety data sheet | Not linked yet; ask the supplier |
| Nitrogen (N) | 13.6% |
| Phosphorus (P) | 3.2% |
| Potassium (K) | 16.5% |
| Sulphur (S) | 12.7% |
| Zinc (Zn) | 0.03% |
| Copper (Cu) | 0.02% |
“—” means not published or not verified. Not published or not verified: Calcium (Ca), Magnesium (Mg), Boron (B). Analysis as published by the manufacturer; always read the current label.
Note: Bulk density 1.01 t/m³ as listed.
Composition
- N13.6%
- P3.2%
- K16.5%
- S12.7%
Who it may suit
- Where sulphur is needed as well: it supplies 12.7% S.
- Where phosphorus is needed: it supplies 3.2% P (as published).
- Where potassium is needed: it supplies 16.5% K.
- We list it under paddock crops.
- Crop-by-crop suitability is not something we have verified for this product. Use your soil test and agronomist.
Application calculator
How much of this product delivers a given amount of nitrogen, and what that costs. Working out the target? See the nitrogen rate calculator. The starting value is an example, not a recommendation.
Nitrogen loss
What this does not show: We do not rate nitrogen loss for this product because its nitrogen form is not stated in the data we hold. Check the label and ask your agronomist.
Where to buy Summit Hay
No verified supplier page for this product. Use a stockist finder below.
Stock and prices not checked. Confirm with the supplier.
Links were opened and read on 17 Oct 2026 to confirm the page loads and names the product or brand. None are affiliate links.
Find a stockist near you
- Nutrien Ag Solutions: find a branch (opens in a new tab)
- Elders: our branches (opens in a new tab)
- Incitec Pivot Fertilisers: find a location (opens in a new tab)
You search by your own postcode or town on their site. We don't collect your location.
Similar products
18.6–2.8–16.5
% nitrogen – phosphorus – potassium
- Form
- Granular
- Type
- NPK compound
- Sulphur
- 12.7%
- Indicative cost
- No verified price
Checked 2026-10-17
Where to buy (finders)
No verified supplier page for this product. Use a stockist finder below.
Stock and prices not checked. Confirm with the supplier.
Links were opened and read on 17 Oct 2026 to confirm the page loads and names the product or brand. None are affiliate links.
Find a stockist near you
- Nutrien Ag Solutions: find a branch (opens in a new tab)
- Elders: our branches (opens in a new tab)
- Incitec Pivot Fertilisers: find a location (opens in a new tab)
You search by your own postcode or town on their site. We don't collect your location.
15.9–6–10
% nitrogen – phosphorus – potassium
- Form
- Granular
- Type
- NPK compound
- Sulphur
- 12.7%
- Indicative cost
- No verified price
Checked 2026-10-17
Where to buy (finders)
No verified supplier page for this product. Use a stockist finder below.
Stock and prices not checked. Confirm with the supplier.
Links were opened and read on 17 Oct 2026 to confirm the page loads and names the product or brand. None are affiliate links.
Find a stockist near you
- Nutrien Ag Solutions: find a branch (opens in a new tab)
- Elders: our branches (opens in a new tab)
- Incitec Pivot Fertilisers: find a location (opens in a new tab)
You search by your own postcode or town on their site. We don't collect your location.
14.6–8–12.5
% nitrogen – phosphorus – potassium
- Form
- Granular
- Type
- NPK compound
- Sulphur
- 9.3%
- Indicative cost
- No verified price
Checked 2026-10-17
Where to buy (finders)
No verified supplier page for this product. Use a stockist finder below.
Stock and prices not checked. Confirm with the supplier.
Links were opened and read on 17 Oct 2026 to confirm the page loads and names the product or brand. None are affiliate links.
Find a stockist near you
- Nutrien Ag Solutions: find a branch (opens in a new tab)
- Elders: our branches (opens in a new tab)
- Incitec Pivot Fertilisers: find a location (opens in a new tab)
You search by your own postcode or town on their site. We don't collect your location.
Sources and last updated
- Analysis: https://summitfertz.com.au/our-products/pasture-horticulture/ (checked 2026-10-17). Manufacturer product table; page text read 17 Oct 2026 shows this analysis (table cells read by column).
- Machine-readable: JSON.
Page last updated 2026-10-17. Data policy: unknown values are shown as “—”, never guessed. Recommendations on this site are sponsor-blind; see methodology.
General information only. Check with your agronomist or local advisor. More