#30 Farming Without Nitrogen: Using Biology to Rebuild Soil with Rowan Berecry

About this episode

Dr Gundi Rhoades interviews Rowan Berecry about sustainable farming practices that reduce reliance on synthetic nitrogen fertilizers.

Today I am sitting down with long-time fruit grower Rowan Berecry to explore a radical but tested idea: growing high-quality food with little to no synthetic nitrogen fertilizer. Drawing on decades of experience - including large scale Queensland plum production - Rowan breaks down how biological systems can replace conventional inputs while improving soil health, crop resilience, and nutrient density. They dive into practical strategies like composting, cultivating nitrogen-fixing bacteria, and using legumes to naturally supply nitrogen. Rowan explains how rebuilding soil organic matter - from 1.8% to 6% - completely transformed his farm, boosting biological activity and reducing reliance on external inputs. The conversation goes deep into plant health, including the role of sap pH in determining susceptibility to pests and disease, and how balancing cations and anions can shift outcomes dramatically. Rowan also shares his system of brewing low-cost, on-farm biofertilisers using native microbes, minerals, and plant extracts—creating highly bioavailable nutrients through fermentation.

People in this episode

Host: Dr Gundi Rhoades

Guest: Rowan Berecry

Topics covered

• sustainable farming
• soil health
• biological systems
• nitrogen-fixing
• crop resilience
• biofertilisers

Keywords

• sustainable agriculture
• soil organic matter
• composting
• plant health
• biofertilizers
• pest resistance
• nutrient density

Mentioned in this episode

Places: Queensland