About Biozest
“In combination with a good spring, Biozest helped me to produce an extra 60 tonnes of silage.”
- Stuart Aspin, Taupo
What is Biozest?
An Elicitor of the Phenylpropanoid Pathway
Biozest is a smart, science-backed spray that helps you grow more productive, more resilient pasture, helping your animals make better use of it.
It’s used by Kiwi farmers looking for a better return from every bite their stock takes. Whether you're running dairy or sheep and beef, Biozest helps you get more out of the grass you've already grown.
Made here in New Zealand, Biozest works on regenerative, conventional and organic farms. It's ACVM-exempt, BioGro-certified, and safe to use with no residue and no withholding period.
Key Benefits and Trial Examples
Increased Pasture Productivity
In this baleage trial, all Biozest treated paddocks, in both the first and second cut, outperformed the untreated paddocks. Overall, the Biozest treated paddocks yielded over 2x as many bales as the untreated paddocks.
Increased Milk/Meat Production
This trial was carried out on a dairy farm on the Hauraki Plains. In autumn, gestating cows grazed Biozest treated pasture and untreated pasture in cycles of approximately 8 to 10 days.
Dairy cows grazing on Biozest treated pasture produced 8.5% more milk solids and 12.2% more fat per litre compared to when they were feeding on control (untreated) pasture.
Reduced Nutrient Loss and Greenhouse Gases
Urine tests from dairy goats that were fed treated and control pasture in rotation showed that less urea is discharged when the dairy goats are fed Biozest treated
pasture.
The average decrease in urea excretion is 37% (2-tailed t-test p=0.03).
Reducing urea excretion means less nitrates are deposited on the land so less is available to leach to our waterways.
Biozest Videos
How Does Biozest Work?
1. It makes your pasture tougher and more productive.
Plants naturally defend themselves from stressful events like drought & frost, and damage from pests or disease. Biozest switches those defence systems on early, so your pasture can recover faster and keep growing.
It works by triggering the plant’s own repair, growth and defence response (known as the phenylpropanoid pathway). That means stronger cell structure, better resilience, and more growth, even under pressure.
2. Your stock get more from every mouthful.
Ruminants are notoriously inefficient, losing up to 75% of the protein and energy they eat through urine, dung and gas.
Biozest changes that. It helps pasture hold onto more of its nutrients so cows and sheep convert more into milk or meat, and waste less as urea or methane.
It also lifts sugar levels in the grass, favouring energy-rich propionate over acetate, meaning less energy lost as heat and gas.
Bottom line? More milk, more meat, and less waste.
3. It cuts nitrogen loss and methane without cutting productivity.
Urea and methane aren’t just waste, they’re lost profit and a red flag for regulators.
Biozest reduces both, by improving how well pasture grows and how efficiently animals use it. Less nitrogen leached, fewer emissions, and more weight or milk in the vat.
Trusted by Kiwi farmers. Backed by science.
Biozest isn’t some offshore gimmick. It’s been developed, tested, and proven right here in New Zealand and it’s used by switched-on farmers who want better returns without relying on more synthetic inputs.
No middlemen. No overpromises. Just a smarter way to grow pasture that works harder for your farm.
Man alive, did I see some results,”
Growth was up to 30kg of dry matter a day, compared with 10kg to 15kg normally.
“The grass just took off. Everything grew, clovers and all. And the cows ate it all, right down and evenly across the paddock – even the urine and dung patches.”
Mike Walsh, Opunake
MPI
Biozest is authorised by MPI (under the ACVM Act) as exempt from registration and can be used on all crops with nil waiting period & nil withholding period.
Organics
Biozest is certified by BioGro for use in organic production (5943).