Biozest has been developed and proven on New Zealand farms.

Biozest increases pasture productivity and ruminant productivity to increase milk and meat production and reduce the environmental impact of farming.

Increase productivity AND reduce nitrate leaching and greenhouse gas emissions with Biozest.


What is Biozest?

  • Biozest is a pasture spray for organic & conventional farms.

  • Biozest helps pasture naturally resist stress and damage and improves pasture growth, quality and resilience.

  • Biozest treated pasture is more easily converted to valuable meat and milk instead of waste products like urea and greenhouse gases.

  • Biozest is manufactured from plant extracts, fatty acids, plant compatible organic acids and wetting agents.

  • ACVM exempt

  • Approved by BioGro (5943).

Biozest Inventor And Scientist Returns From Presenting Data At International Greenhouse Gas Conference

Zest Biotech founder and inventor of Biozest, Nathan Balasingham, submitted a paper and was selected to give an oral presentation at the 7th GGAA – Greenhouse Gas and Animal Agriculture Conference: the world’s premier conference on livestock emissions research. Read More


Henry Schipper dairy farmer.jpg

“Dung is considerably thicker or more solid. Cows seem to graze the paddock harder. When changing to control paddocks dung is thin again. The effect on milk production was almost instant. As soon as cows go onto Biozest treated pasture the fat and protein content went up. Urine samples from grazing of treated and untreated paddocks show Biozest reduced urea excretion by 33%.”

Henry Schipper, Dairy Farmer, Hauraki Plains

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
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.

How Does Biozest Work?

  1. Increase Pasture Productivity


Biozest is applied to pasture as a liquid spray.

All plants have receptors on their surfaces that detect changes (such as high UV light, pest attack or disease) and trigger an immune/defence response from within the plant.

Biozest is designed to be detected by these same receptors so that plants respond to Biozest via the same immune/defence system.

This triggers the ‘phenylpropanoid pathway’ - production of a wide range of bioactive molecules which sustain plant immune systems, assisting plants to overcome stress and damage from pests, disease and environmental effects such as frost or drought.

By producing these bioactive molecules Biozest treated pasture is more resilient and more productive.

2. Increase Ruminant Productivity


Ruminants are inefficient. Only 20-25% of pasture protein is converted to milk or meat. The rest is lost as waste via urine and dung while energy is lost as methane gas.


The bioactive molecules (phenylpropanoids) in Biozest treated pasture protect the protein so more pasture is converted to milk or meat instead of being broken down to ammonia and excreted as urea.


Biozest treated pasture also has higher levels of soluble sugars which provide energy at key stages of digestion and allows even more pasture to be converted to milk or meat.


3. Reduce Waste


Pollution is the result of wasted resources.

Urea (nitrates from urine) is a loss of valuable protein and methane is lost energy. By utilising more pasture protein for milk or meat and reducing urea production, the building blocks for methanogenisis are diverted away to other metabolic pathways.

Biozest enables ruminants to better utilise the pasture they are fed - so waste in the form of both urea and methane will be reduced - reducing greenhouse gas emissions and nitrate leaching.

Instructions for Use

Fill sprayer tank with water. Shake Biozest container several times to reconstitute content. Add Biozest & rinse container into tank. Agitate thoroughly before spraying. Compatibility with additional products must be tested prior to application.

Dairy pasture: 
Rate: 1 litre of Biozest (in 50 to 500 litres of water) per hectare. 
Initial Treatment: 2 applications 3 to 5 days apart
Follow on treatment: 1 application 3 to 5 days after grazing.

Dry Stock Farms: 
Rate: 1 litre of Biozest (in 50 to 500 litres of water) per hectare. 
Initial Treatment: 2 applications 3 to 5 days apart
Follow on treatment: 1 application in spring, summer, autumn and winter.

Stock Finishing Paddocks Only:
Rate: 1 litre of Biozest (in 50 to 500 litres of water) per hectare. 
Initial Treatment: 2 applications 3 to 5 days apart
Follow on treatment: 1 application 3 to 5 days after grazing.

Please Contact Us if you have any further questions.

For pricing and delivery options see our SHOP