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Efficient watering and sprinkling: Principles for optimal plant growth and water conservation
18/10/2023
Science and Nature – Hand in Hand
16/04/2025
Published by FSB on 16/04/2025

The Role of Microorganisms in Soil

 

Soil is not just an inert medium—it is a living ecosystem, rich in microorganisms that play a key role in maintaining fertility, plant health, and the resilience of agroecosystems.
The concept of living soil emphasizes the importance of biological activity as a foundation for sustainable agriculture.

Living soil is one that maintains an active and balanced microbiological population—bacteria, fungi, actinomycetes, protozoa, nematodes, and more—working in synergy with plants and the environment.


Main Microorganism Groups and Their Roles

🔹 Bacteria:

    Decompose organic matter and drive the natural nutrient cycles

    Fix atmospheric nitrogen (e.g. Methylobacterium, Azotobacter) and stimulate plant growth

    Improve phosphorus and potassium solubility, enhancing plant nutrition

    Produce biologically active compounds that support various stages of plant development

    🔹 Fungi (including mycorrhizae):

      Improve water and nutrient uptake

      Create underground networks that connect plants

      Increase resilience to stress and pathogens

      🔹 Actinomycetes:

        Break down complex materials like lignin and cellulose

        Suppress plant pathogens


        Benefits of Supporting an Active Microbiota

        🌿 Improved nutrient uptake
        🛡 Stronger plant immunity and stress tolerance
        🌍 Enhanced soil structure and water retention
        ❌ Reduced need for chemical fertilizers and pesticides
        🔄 Biological recycling of organic matter


        How to Stimulate Life in the Soil

        ✅ Use microbial fertilizers—specific strains that perform targeted functions
        ✅ Add organic matter—compost, humic acids
        ✅ Reduce aggressive practices—deep tillage, excessive chemical inputs, soil compaction
        ✅ Promote crop diversity and use cover crops


        Microorganisms as Partners, Not Just Resources

        Our approach to soil should be biological, not merely chemical.
        By working with the soil microbiome, we’re not simply feeding plants—we are building an ecosystem.

        Microorganisms are at the heart of sustainable agriculture. Soil, as a living system, has the capacity to support plant growth naturally and long term.
        Maintaining and enhancing this microbial activity is an investment in the future of farming.

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