Maximum Yield USA January 2017 | Page 82

MYCORRHIZAE ake a teaspoon and scoop some soil from the ground. You are holding a teeming metropolis right there: around a billion individual organisms, most of which you can’t see with the naked eye and all busily at work in complex, symbiotic relationships about which we know almost nothing. Garden soil could be described as the final frontier. We know as little about what goes on under our feet as we do about the outer reaches of the galaxy or the deep ocean floor. Soil scientists are like modern day explorers on a voyage of discovery, never knowing what they’ll find next, and every new revelation causes us to rethink our view of how plants interact with the world around them. One seismic reassessment of how we view the subterranean world of plants has come with the discovery of a huge group of microorganisms known as mycorrhizal fungi, microscopic mushrooms able to literally plug in plants to the soil like an electric cable. As we understand more about this hugely important group of soil microorganisms and the electrifying effect they have on plant growth, we’re also learning how to harness their power to improve results in the garden. T 80 Maximum Yield USA  |  January 2017