soil sample containing soil biology, with bacteria, fungi, amoeba, flagellate, and arcella, on a sustainable agricultural farm

agriculture agronomy amoebae arcella arthropods australia bacteria compost composter composting disease earthworm farm farmers farming flagellate fungal fungi fungus garden growing health healthy hyphae life living micro microbes microorganisms microscope mushroom mushrooms nematode nematodes nemotode organic organism predator protozoa regenerative sample soil sustainability sustainable test testate