As growers navigate the twin demands of productivity and sustainability, the fertiliser choices they make at planting time have never mattered more. Redox is meeting that challenge head-on with a range of certified organic-allowed granular Phosphorus and Potassium inputs, including Palm Bunch Ash and Guano, that deliver genuine agronomic results without compromising your certification status or your soil’s long-term health.
Palm Bunch Ash: A Potassium-Rich Soil Amendment
Phosphorus and Potassium are two of the three macronutrients every crop cannot live without. Phosphorus underpins root establishment, energy transfer, and cell division, the foundations of a strong, high-yielding plant. Potassium governs water regulation, sugar transport, stalk strength, and resistance to disease and environmental stress. In intensive farming systems, both are routinely depleted, and replenishing them without resorting to synthetic salts is one of the central challenges of organic and sustainable production.
The good news? Nature has already solved this problem. Two of the most effective P&K sources on earth are entirely natural, readily available in granular form, and now accessible through Redox.
Palm Bunch Ash: Nature’s Potassium Powerhouse
Palm Bunch Ash (PBA) is produced by incinerating empty oil palm fruit bunches at high temperatures, concentrating the mineral content of the plant into a potassium-rich ash. With K₂O levels commonly reaching 35% or more, and in granular 2-5mm form, it’s never been easier to apply.
- Exceptional Potassium Concentration. Granular PBA delivers K₂O levels far exceeding conventional organic alternatives, meaning you achieve meaningful potassium nutrition at lower application rates.
- Natural Soil pH Improvement. Palm Bunch Ash has a strong alkaline character that helps neutralise acidic and peaty soils, improving nutrient availability across the board, not just for potassium. This is a potassium-rich soil amendment rather than a conventional K fertiliser, and it is best positioned as a foundation product for soil health-focused systems, particularly in acidic soils where both the potassium and liming effect can provide value.
In addition to supplying potassium, it has the potential to help improve soil pH, contribute calcium, magnesium, phosphorus and silicon, and improve nutrient balance within the soil. This may help create a more favourable environment for root growth and nutrient availability, while also helping shift exchange sites away from acidity and towards more beneficial nutrients. - Longer Lasting K Availability. Due to its lower solubility, nutrients are likely to become available more gradually, which may suit farms looking for a longer-lasting source of potassium rather than rapid nutrient availability, potentially reducing the risk of leaching losses.
- Granular Convenience. A 2–5 mm granule size suits mechanical application using conventional agricultural machinery, making PBA practical for broadacre, horticultural, and plantation crops alike.
- Certified Organic Input. Palm Bunch Ash is a Southern Cross certified organic allowed input and eco-friendly product, fully eligible for use in certified organic farming programs.
Redox supplies organic-allowed granular P&K inputs, including Palm Bunch Ash and Guano, to support sustainable crop nutrition and soil health-focused farming programs.
Guano: Ancient Phosphorus, Modern Results
Long before synthetic fertilisers existed, guano, the accumulated excrement of seabirds and bats, was the most prized fertiliser on earth. Empires were built and wars were fought over access to it. Modern growers are rediscovering why.
- High-Analysis Phosphorus. Guano is a concentrated phosphorus source with P levels that compare favourably with single superphosphate, but without the zinc tie-up and nutrient lock-up that commonly follows synthetic water-soluble phosphate applications.
- Slow-Release Nutrient Supply. Unlike synthetic phosphorus fertilisers that deliver a sharp spike of P quickly fixed by soil particles, guano releases its phosphorus gradually across the growing season. Crops keep drawing on the fertility you applied at planting right through to maturity.
- Biological Soil Benefits. Guano’s natural decomposition involves specialised microbes that may help suppress soil-borne diseases and break down toxins, functioning as a natural fungicide. It can also offer protection against root-knot nematodes.
- No Salt Build-Up, No Acidification. Synthetic fertilisers often raise soil salinity or drive pH in the wrong direction over time. Guano maintains the natural balance of the soil without increasing salt content or acidity, a genuinely restorative input.
- Organic Certification Eligible. As a natural fertiliser, guano is also Southern Cross certified as an organic allowed input, making it ideal for certified operations or those transitioning toward organic production.
Getting the Most from Your Organic P&K Program
Palm Bunch Ash and Guano work exceptionally well together. PBA anchors the potassium component while Guano covers the phosphorus nutrition. Used alongside a balanced nitrogen source, they address the full macronutrient spectrum in a completely organic, soil-building program. For growers on acidic soils, common across much of Australia, the pH-buffering properties of PBA deliver an additional benefit synthetic P&K sources simply cannot match.
Talk to Redox About Your P&K Requirements
Whether you’re managing a broadacre grain program, a horticultural enterprise, or a certified organic operation, Redox can supply granular Palm Bunch Ash and Guano to match your agronomic needs and your values.
Contact the Redox crop production team today to discuss supply volumes, application recommendations, and how these organic-allowed inputs can be integrated into your next fertiliser program.