Biological pasture programme maintained production while reducing synthetic nitrogen input. Big increase in clover production and root mass.

+23% Yield Response with Reduced N Programme. EM Fert Enhance increases Yield by 4 tonne.

Replicated field trial showing improved fodder beet yield response with Plant-Stim application.

20% increase in yield reponse with EMNZ Biostimulants

36% increase in yield reponse with EMNZ Biostimulants

The results showed a statistically signi cant increase in yield was achieved by using Plant-Stim, EM Soil & Crop and EM Amino

Plant-Stim® significantly increased early-season growth, improved regrowth between cuts, and delivered a substantial increase in total seasonal production.

Both Plant-Stim and EM Balance increased carrot yields substantially compared to the untreated control.

Both Plant-Stim and EM Balance improved yield compared to the control

All EMNZ treatments gave a significant and economic yield response when applied to an Onion Crop.

This field trial demonstrates that EMNZ biostimulants can have a significant effect on oat yield, suggesting their potential as valuable tools for improving crop performance.

These early New Zealand field trials helped shape the development of EMNZ’s biological farming programmes. Conducted across crops including maize, fodder beet and cereals, the work explored how Effective Microorganisms could improve nutrient efficiency, plant performance and soil health under real farming conditions. Many of these projects laid the foundation for the modern EMNZ products and systems used today.

Over the past two decades, EMNZ and associated researchers have explored how soil biology, microbial activity and nutrition influence plant resilience and disease pressure. This work included kiwifruit Psa-V studies, soil biology investigations, vermicast and media trials, and early research into biological disease suppression systems. Together, these projects helped build the foundation for EMNZ’s modern approach to biological farming and plant health support.

EMNZ research has explored how biological systems influence plant physiology, nutrient efficiency and crop performance under a range of growing conditions. This work includes root development studies, reduced nitrogen programmes, plant stress resilience and investigations into biological approaches to improving nutrient cycling and overall plant function.

International EM research has shown improvements in microbial activity, humification, enzyme activity and soil health indicators.

Research supports the role of EM systems in nutrient transformation, microbial activity and fertiliser efficiency.

Studies have linked EM application with improved photosynthetic activity, crop vigour and yield performance.

International studies suggest EM systems can help support plant resilience and influence microbial conditions around plant roots and foliage.