Bio Charge - Fungal Feeder
$2,702.50
incl. GST
$2,350.00 ex. GST
Product safety information
Download Safety Data Sheet (PDF)
Version 1.1 · 19 October 2026 · 6 pages
View full-size back label | Download print labels (100 L and 1,000 L) (PDF)
Read the current label and SDS before handling or use. Product photographs may show earlier packaging; use these October 2026 documents for current information.
Eurofins nutrient analysis
N–P–K–S 1.6–0.2–0.6–0.6
Elemental nutrients, % w/v (grams per 100 mL), rounded to one decimal place for this liquid product. Sulphur measured at 5.69 g/L.
Report AR-26-NU-112835-01, issued 16 October 2026. These results describe the submitted sample; natural batch variation applies.
View the full measured mineral analysis
| Element | Total, mg/L |
|---|---|
| Nitrogen (N) | 16100 |
| Phosphorus (P) | 1650 |
| Potassium (K) | 5590 |
| Sulphur (S) | 5690 |
| Calcium (Ca) | 303 |
| Magnesium (Mg) | 342 |
| Sodium (Na) | 4300 |
| Iron (Fe) | 7 |
| Copper (Cu) | <1 |
| Manganese (Mn) | 2 |
| Zinc (Zn) | 2 |
| Boron (B) | 1 |
| Cobalt (Co) | <1 |
| Molybdenum (Mo) | <1 |
| Selenium (Se) | <1 |
mg/L is equivalent to the report’s g/m³. <1 means below the reporting limit, not zero. These are total elemental results; nutrient forms, plant availability and biological activity were not established by this panel. Nitrogen, sodium, boron, cobalt, molybdenum, selenium and density were reported as tests not accredited.
Density: 1.1 g/mL. pH: not reported; testing remains pending.
Calcium, magnesium and the quantified micronutrients are present at trace concentrations. The sample results do not establish a guaranteed minimum for every batch or a micronutrient-deficiency correction rate.
Start here: kick-start soil biology
BioCharge Fungal Feeder is Bio Charge’s recommended starting product to kick-start soil biology and support a healthy fungal-to-bacterial balance. Fish hydrolysate, molasses, charged biochar, and water create a carbon-rich liquid input for pasture, orchard, and cropping systems.
60 L/ha is our kick-start sweet spot
Where soil testing shows the fungal-to-bacterial balance needs alignment, our preferred route is a 60 L/ha kick-start followed by two 30 L/ha maintenance applications. For steady, longer-term support, three 30 L/ha applications remain an option from the outset and the ongoing maintenance programme after a kick-start year.
Kick-start year: 120 L/ha60 L/ha + 30 L/ha + 30 L/ha. Then 90 L/ha annually.
Long-term: 90 L/ha/year3 × 30 L/ha, timed for spring, summer and autumn.
Bio Charge's recommended programme, informed by the on-farm observations below. Use soil testing and pasture monitoring to refine timing and rates for your farm.
Explore the supporting research ↓
Product type Biological soil treatment
Pack sizes 20 L, 100 L, 200 L and 1,000 L
Application Ground applied
Made in New Zealand
Product function
Food and habitat for soil biology
- Fish hydrolysate supplies organic nutrients, amino compounds, and marine-derived inputs.
- Molasses provides an accessible carbon source to help feed beneficial soil microbes.
- Charged biochar provides stable carbon structure and habitat around the root zone.
- Water Included in the formulation. Dilute before application at a minimum of one part Fungal Feeder to two parts water.
Fungal Feeder is deliberately positioned as a biology treatment rather than a replacement for a complete fertiliser programme. Its role is to support the living system around plant roots.
Practical biological support
Key benefits
- Supports beneficial fungal activity in the soil
- Feeds microbial biology with fish hydrolysate and molasses
- Supports root-zone activity and nutrient cycling
- Provides charged biochar as a stable microbial habitat
- Suitable for biological and regenerative programmes
- Designed for pasture, orchard, horticulture, and cropping systems
Where it fits
Ideal applications
- Pasture and dairy soil programmes
- Orchards, vines, berries, and horticulture
- Cropping systems prioritising root-zone biology
- Soils affected by repeated cultivation or intensive inputs
- Spring, summer and autumn biological soil programmes
- Operations beginning a wider BioCharge programme
Soil requirements vary between pasture, cropping, orchard, and horticultural systems. Use current soil information and qualified farm-specific advice.
Bio Charge application guidance
Application programme
Kick-start: 60 + 30 + 30 L/haWhere soil testing shows fungal-to-bacterial ratios need alignment, Bio Charge favours starting at 60 L/ha, followed by two separate 30 L/ha maintenance applications. 120 L/ha in year one, then 90 L/ha annually.
Long-term: 3 × 30 L/haA steady feeding option from the outset, or ongoing maintenance after a kick-start year. Apply 30 L/ha in spring, summer and autumn: 90 L/ha annually. Adjust timing to conditions and monitoring.
- Mix at a minimum of one part Fungal Feeder to two parts water.
- A 1,000 L IBC covers approximately 8.3 ha for the full kick-start first-year programme (120 L/ha), or 11.1 ha for one ongoing maintenance year (90 L/ha). Single-pass coverage is 16.7 ha at 60 L/ha or 33.3 ha at 30 L/ha. Rates exclude added water.
- Apply as a ground treatment through suitable biological-liquid spray equipment.
- Apply when soil moisture is present and biological activity is supported.
- Agitate thoroughly before and during application as required.
Important: Application guidance follows Bio Charge’s product programme. Always follow the current BioCharge label, confirm compatibility with your equipment and other inputs, and comply with applicable local requirements.
More dry matter. Stronger biology. Follow the evidence.
Conal Wattam's research recorded higher first-cut dry matter harvests alongside higher fungal biomass and higher nitrogen-cycling estimates under Fungal Feeder. The pasture was cut 30 days after application, with soil testing at day 37.
2,025 kg DM/haEstimated combined first-cut harvest at 60 L/ha, compared with 1,049 kg DM/ha in the control. Research Areas 1, 2 and 3.
544.94 µg/gTotal fungal biomass at 60 L/ha, compared with 290.53 µg/g in the control. Composite soil samples from Areas 1 and 2.
336+ kg N/haEstimated three-month nitrogen-cycling potential in every treated composite, compared with 112 to 168 in the control. The laboratory's upper reporting band.
Why Bio Charge favours a 60 L/ha kick-start
At the first cut, the combined 60 L/ha harvest was close to the 90 L/ha result, using two-thirds of the product in that initial application. Alongside its biological results, that makes 60 L/ha our practical kick-start choice.
| Application | kg DM/ha |
|---|---|
| Control | 1,049 |
| 30 L/ha | 1,346 |
| 60 L/ha | 2,025 |
| 90 L/ha | 2,050 |
These are harvest estimates from combined fresh weights and Hills' pooled dry matter percentages, rather than measured growth from a common starting cover. Soil biology represents one composite per treatment from Areas 1 and 2. All areas, including the control, received 30 kg urea product/ha over winter. Soil variation and starting pasture cover remain factors for further research. Nitrogen figures describe laboratory-estimated potential, not measured plant uptake or a fertiliser saving. These observations inform our programme; the complete 120 L/ha first-year sequence has not been tested as an annual treatment.
Cambridge adds the longer-term perspective. Its one-year results show higher fungal biomass and nitrogen-cycling estimates, including a programme of three 30 L/ha applications, totalling 90 L/ha over the year. It supports investigating regular biological feeding; it did not include a dry matter harvest comparison. See the Cambridge results below.
Sources: Conal's published research series, Hills report 4334434 and Soil Foodweb NZ reports 05-10269 to 05-10272. These are on-farm observations. Further matched measurements will test the connections between biology, nutrient uptake and pasture production.
More potential to cycle nitrogen
Higher estimated nitrogen-cycling potential in every follow-up sample.
A pasture farm using Fungal Feeder was assessed by Soil Foodweb New Zealand in September 2025 and again in September 2026. These are the observations from the supplied samples.
Estimated nitrogen-cycling potential
kg N/ha over a three-month period
2025 baseline
<28 and 84–112Two individual sample estimates
2026 follow-up
336+Reported in all three samples
The opportunity: make better use of nitrogen already moving through the soil’s living system. The follow-up estimates were higher across all three supplied samples. The next step is to measure how much of that potential becomes plant uptake and pasture growth under farm conditions.
Potential, not a fertiliser credit. These are laboratory estimates, not measured nitrogen supplied, extra nitrogen created by Fungal Feeder or confirmed fertiliser savings. This observational comparison does not establish a product treatment effect. Do not annualise the estimates or deduct them from a fertiliser budget. Review the interpretation with the laboratory and your farm adviser.
The wider biological picture
3.06×
Mean total fungal biomass
2025: 131.52 µg/g2026: 402.28 µg/g
7.98×
Mean active fungal biomass
2025: 1.29 µg/g2026: 10.29 µg/g
Closer to 1:1
Total fungal-to-bacterial balance
2025: 0.42–0.46:12026: 1.09–1.38:1
View the individual active-fungi readings
| Sample and programme | µg/g soil |
|---|---|
| 2025 baseline: 2 Left | 1.64 |
| 2025 baseline: 3 Right | 0.94 |
| 2026 A: 90 L/ha | 20.72 |
| 2026 B: 60 L/ha | 4.17 |
| 2026 C: 30 L/ha | 5.99 |
Source: Soil Foodweb NZ reports 05-9957, 05-9958 and 05-10250–05-10252. Bio Charge’s interpretation; not a laboratory endorsement of Fungal Feeder. The full article explains the seasonal reference changes, sampling limitations and next steps.
Read the full on-farm results →
Exclusive North Island distributor
Available through Rainbow & Brown
Rainbow & Brown provides product access, purchase support, for BioCharge Fungal Feeder.
View at Rainbow & BrownExplore the full Bio Charge range.
View the current company & product brochure
Start here: kick-start soil biology
Feed the biology beneath every productive system.
BioCharge Fungal Feeder is a New Zealand-made biological soil treatment designed to support beneficial fungi, root-zone activity, and soil biology in pasture, orchard, and cropping systems.
Inside the formulation
Food, carbon and habitat. Dilute before application.
Fish hydrolysate, molasses and charged biochar form a concentrated liquid soil input for root-zone support. Add dilution water before application at a minimum ratio of one part Fungal Feeder to two parts water. Application rates refer to the product before this dilution.
Why Fungal Feeder
Support the living system around the roots.
Beneficial fungi
Designed to support beneficial fungal activity as part of a biological soil programme.
Root-zone activity
Helps create a stronger biological environment around plant roots.
Nutrient cycling
Feeds soil biology involved in the movement and cycling of nutrients.
Programme flexibility
Fits pasture, orchard, cropping, biological, and regenerative programmes.
Exclusive North Island distributor
BioCharge Fungal Feeder from Rainbow & Brown.
Rainbow & Brown is BioCharge's exclusive North Island distributor, providing regional product access and purchase support for BioCharge Fungal Feeder. Contact Rainbow & Brown directly to confirm current formats, stock availability, and delivery options.
Where it fits
Pasture systems
Biological support for pasture and root-zone programmes.
Orchards
Ground-applied biological support through the growing season.
Cropping systems
Support where root-zone activity and soil biology are priorities.
Low-activity soils
A useful programme input where biological activity requires support.
Designed for practical biological soil programmes.
BioCharge recommendations
Our recommended application programme.
BioCharge Fungal Feeder is available in 20 L, 100 L, 200 L and 1,000 L formats for soil application through suitable liquid equipment. These are Bio Charge programme recommendations, informed by on-farm observations. The complete 120 L/ha first-year sequence has not been tested as an annual treatment. Use soil testing and pasture monitoring to refine timing and rates.
Long-term: 3 × 30 L/haApply 30 L/ha in spring, summer and autumn: 90 L/ha annually. This is an option from the outset and for maintenance after a kick-start year.
Kick-start: 60 + 30 + 30 L/haWhere soil testing shows the fungal-to-bacterial balance needs alignment, begin at 60 L/ha and follow with two separate 30 L/ha applications: 120 L/ha in year one, then 90 L/ha annually.
You add the waterBefore application, mix at a minimum of one part Fungal Feeder to two parts water.
Ground applicationApply through suitable biological-liquid equipment. Follow the current Bio Charge label.
Apply with moisture presentApply when soil moisture and biological activity support a useful response.
Agitate thoroughlyMix the IBC thoroughly before and during use as required by the label.
Use suitable equipmentApply as a soil treatment through appropriate spray or liquid application equipment.
Match farm timingAlign application with soil conditions, crop stage, seasonal demand, and farm advice.
Always read and follow the current BioCharge product label. Match application timing and rate to soil moisture, crop or pasture requirements, equipment, and qualified farm-specific advice.
Feeding the Fungi: What’s Happening Beneath Your Pasture?
What is happening around your pasture roots? Explore the role of soil fungi, how Soil Foodweb New Zealand can help you measure your soil biology, and where Fungal Feeder fits into a programme you can assess on your farm.
Read the article
Plan a biological programme
Talk to the team
Build a better environment around the roots.
Talk with BioCharge about the right timing, equipment, and place for Fungal Feeder in your soil programme.