Description
5-15-45 water soluble fertiliser is not a spreading product. It is a fully soluble grade for fertigation and foliar feeding – drip lines, sprinklers, boom sprays and hydroponic systems – where a granule would be no use. Going in with the irrigation means the nutrient reaches the root zone in the amount and at the moment you choose, which is what matters on high-value horticulture during a critical growth stage. Full solubility also means no residue to block emitters or filters. Potassium leads at 45%, with 5% nitrogen and 15% phosphorus. Potassium governs water regulation, stem and stalk strength, disease tolerance and – in fruiting and root crops – size, firmness, sugar and shelf life. A potassium-dominant analysis is a fruit-fill and finishing product, and it is also the correction for the potassium depletion that follows repeated high-removal crops. 65 units in total. Supplied in bulk, bulka bags or bagged, minimum order 10 MT, delivered Australia-wide and shipped worldwide. A Certificate of Analysis and Safety Data Sheet are issued against the batch you receive.
5-15-45 Water soluble fertilizer Specification
Fully water-soluble, formulated for fertigation, injection and foliar programs. The declared analysis and supply detail for 5-15-45 Water soluble fertilizer are set out below. A Certificate of Analysis is issued on request against the batch you actually receive.
| Product name | 5-15-45 Water soluble fertilizer |
| Product code | 5-15-45-WATER-SOLUBLE-FERTILIZER |
| Product family | Macro Element Water soluble fertilizer |
| Declared analysis (N–P–K) | 5–15–45 |
| Total nitrogen (N) | 5% |
| Phosphorus (as P2O5) | 15% |
| Potassium (as K2O) | 45% |
| Total nutrient content | 65% (65 units) |
| Elemental phosphorus (P) | 6.5% |
| Elemental potassium (K) | 37.4% |
| Nutrient supplied per tonne | 50 kg N · 150 kg P2O5 · 450 kg K2O |
| Physical form | Soluble crystal / powder |
| Water solubility | Fully water soluble |
| Packaging | Bulk, one-tonne bulka bag or bagged — confirmed on your quotation |
| Minimum order | 10 – 25 MT, depending on the product and the destination — confirmed on your quotation |
| Availability | Australia-wide delivery; international shipping on request |
| Certificate of Analysis | Issued on request against your delivered batch |
| Safety Data Sheet | Available on request — request it before handling |
Nutrient Content of 5-15-45 Water soluble fertilizer
One tonne of 5-15-45 Water soluble fertilizer supplies 50 kg of nitrogen (N), 150 kg of phosphate (P2O5) and 450 kg of potash (K2O) — a total of 65 nutrient units per 100 kg.
Nutrient supplied at different rates
What one hectare actually receives at a given spreading rate of 5-15-45 Water soluble fertilizer. Use it to work back from a nutrient target to a product rate.
| Rate applied | Nitrogen (N) | Phosphate (P2O5) | Potash (K2O) |
|---|---|---|---|
| 50 kg/ha | 2.5 kg | 7.5 kg | 22.5 kg |
| 100 kg/ha | 5 kg | 15 kg | 45 kg |
| 150 kg/ha | 7.5 kg | 22.5 kg | 67.5 kg |
| 200 kg/ha | 10 kg | 30 kg | 90 kg |
| 250 kg/ha | 12.5 kg | 37.5 kg | 112.5 kg |
| 300 kg/ha | 15 kg | 45 kg | 135 kg |
Indicative conversion only. Set application rates against a current soil test and confirm them with a qualified agronomist.
Where 5-15-45 Water soluble fertilizer Is Used
Quality, fill and finishing
Potassium leads this analysis, making it a finishing and quality product rather than a growth-push product. Typical use is the reproductive phase — fruit fill, tuber bulking, grain fill — and in crops where potassium removal at harvest is high.
Fertigation and foliar use
This product is fully water soluble, which makes it suited to fertigation, injection through drip or pivot, and foliar programs where nutrient needs to be available immediately rather than released over time. Dissolve fully before injecting, and check compatibility before tank-mixing with other inputs.
Packing and Quantities
5-15-45 Water soluble fertilizer is supplied in bulk, in 1,000 kg and 500 kg bulka bags, and in 50 kg and 25 kg bags. Minimum order is 10–25 MT, depending on the product and the destination. Packing formats, 20ft container loading figures, and bagging and marking are set out in full on our Delivery & Freight page.
Handling and Storage
Store 5-15-45 Water soluble fertilizer dry, off the ground and out of direct weather. Nitrogen and ammonium-based fertilisers draw moisture from the air and will cake if left exposed — full handling and storage guidance is on the Delivery & Freight page.
5-15-45 Water soluble fertilizer Data Sheet
A Certificate of Analysis for your delivered batch and the Safety Data Sheet are both available on request. The analysis in the data sheet is the nominal specification; where a Certificate of Analysis is issued for a batch, that certificate governs.
Related Reading
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Enquire About 5-15-45 Water soluble fertilizer
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