A multi-nutrient product for an ideal all-round pasture potash fertiliser

BioPotash K™
BioPotash K™ is a dual-action, slow-release potassium fertiliser that enhances soil biology and delivers long-lasting results, helping kickstart pasture growth and improve performance through dry periods. Built on our BioFish N™ and seaweed base, it naturally supports humus-rich, moisture-retaining soils — better for your farm and the environment.
CORE BENEFITS
- Dual action-slow release & high solubility (25-35% in water & citric acid)
- Biology enhance-accelerates soil biological activity
- Potash K with our BioFish N™ & seaweed product baseline
- Maximise pasture growth & kick start paddocks for the growing season
- Set up paddocks for better performance into prolonged dry periods
- Naturally build soil – pasture health and resilience
- Bio-sustained release – a little goes a long way
- Longer sustained results between applications
- Build humus rich soils that retain moisture effectively
- Better for the environment of your farm
- Produced locally, no supply issues
BEST FOR
PRICE
$793 per/ton in bulk (plus freight & GST)
APPLICATION
Applied to established pastures- broadcast
Recommended rate
180kg/ha (Maximise Performance)
140kg/ha (Budget Considerations)
Key Product Nutrients
Product also includes
- Nitrogen (N)
- Phosphorus (P)
- Potassium (K)
- Calcium (Ca)
- Magnesium (MgO)
- Zinc (Zn)
- Boron (B)
- Copper (Cu)
- Iron (Fe)
- Sodium (Na)
- Sulphur (S)
- Chloride (Cl)
- Iodine
- BioFish & Seaweed (Biologicals)
: Beneficial living soil micro-organisms
: Vitamins, Amino Acids, Proteins, Omega 3
: Multi- minerals & trace elements
The unique differences of using BioActive Soils biological fertilisers
Biology
- Natural and sustainable
- Apply living microbes which stimulate nutrient energy
- Encourages mycorrhizal fungi
- Key macro and micro-nutrients added where required
Animal Health
- Improves animal health through high quality pasture and crops
- Helps maximise animal production and weight gains
Soil
- Enhances soil structure
- Promotes a healthy soil ecosystem and worm population
- Works with soil- naturally
- Increase humus and water retention
Plants
- Doesn’t damage plants
- Healthy, quality, nutrient dense plant growth
- Promotes stronger plant root development
- A healthy pasture naturally limits pest and weed pressure
Biological potash fertiliser solutions made for your farm
We can add additional key nutrients (NPKS etc) to our biological baseline fertilisers, creating a specific mix to maximise the performance outcomes for your farm (see input list below).
Independent soil and herbage testing is undertaken to identify the nutrients required for the final product recipe solution for your farm.


Locally made for New Zealand farms
Unlike other potassium fertiliser products that are imported, BioPotash K™ is made locally in New Zealand for New Zealand farms.
This gives farmers access to a locally produced source of potassium, combined with BioActive’s biological approach to support healthy pasture, crops and soils. Reach out to the team to find out more or to discuss your needs. Contact details below.
Potash fertiliser results
Explore how BioPotash K supports soil health and pasture resilience through targeted potassium delivery. These examples show the difference it can make when integrated into a biological fertiliser programme.
Our BioPotash K blends potassium into the wider biological programme to support strong, consistent pasture growth. When potassium levels are low, plant resilience and feed quality can suffer. This product helps correct that, contributing to greener pasture, improved root strength, and better year-round performance.
Potassium is applied as needed, supported by biology to ensure nutrients are absorbed efficiently and not lost to leaching. The result is healthier soil and higher-quality pasture — supporting improved animal performance and more productive farm systems over time.

This slider comparison shows BioPotash K applied post-cut on a finishing block in North Otago, helping to stimulate tired soils and rebuild pasture performance. You can see how this biological potash fertiliser delivered a visible lift in growth and plant health. By combining essential potassium with beneficial microbes, this potash fert supports stronger root development, improved feed quality and longer-term soil resilience.
It’s notable how lifting the biomass and performance of the soil microbes can lift soil fertility, and this is one reason I suggest BioActive Soils products.
LEADING NZ SOIL SCIENTIST










