Soil Health
Organic matter, soil structure and pH.
Soil knowledge & field guides
Knowledge Centre
Accessible guides on soil health, organic matter, plant nutrition and circular agriculture.
Explore the knowledge
Biogas & Digestate
From energy production to agricultural use.
Plant Nutrition
Analysis, nutrients and application approaches.
Articles & Guides
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Plant Nutrition in Calcareous Soils: How High pH Changes Nutrient Availability
Why calcareous soil and high pH are not the same measurement, and how high pH changes iron, zinc and phosphorus availability.
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How to Read a Fertilizer Label: NPK, Micronutrients and Guaranteed Analysis
How to read NPK, micronutrients and the guaranteed analysis, and why the percentage is not the field rate.
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Nitrogen Fertilizers Explained: Urea, Ammonium and Nitrate Forms
How urea, ammonium and nitrate behave differently in soil, and why one large dose is not the same as splitting it.
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What Is Leaf Analysis and How Should It Be Used with Soil Analysis?
What a leaf analysis shows that a soil analysis does not, and why sampling time and leaf choice change the reading.
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How to Assess Compost Maturity Before Field Application
How to judge compost maturity before field use: temperature, smell, salinity and the analysis, not color alone.
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Why Does Phosphorus Become Fixed in Soil? Understanding Phosphorus Management
Why phosphorus becomes bound in soil and why raising the rate without a soil analysis is not the management.