To: Haim R. Branisteanu who wrote (107011 ) 8/11/2014 4:57:25 PM From: Snowshoe Read Replies (1) | Respond to of 219716 >>You can not imagine how complicated what is called the rhizome-sphere is.(all that is beneath the surface) a full ecological environment with soil microbes, nematodes, all kind of fungi and the what else type of creatures feeding on each other penetrating plants roots triggering their cellulose and lignin growth and so many more.<< Some truly excellent books on that topic...Teaming with Microbes: The Organic Gardener's Guide to the Soil Food Web, Revised Edition (2010) amazon.com The 2011 Garden Writers of America Gold Award for Best Writing/Book proves soil is anything but an inert substance. Healthy soil is teeming with life -- not just earthworms and insects, but a staggering multitude of bacteria, fungi, and other microorganisms. When we use chemical fertilizers, we injure the microbial life that sustains healthy plants, and thus become increasingly dependent on an arsenal of artificial substances, many of them toxic to humans as well as other forms of life. But there is an alternative to this vicious circle: to garden in a way that strengthens, rather than destroys, the soil food web -- the complex world of soil-dwelling organisms whose interactions create a nurturing environment for plants. By eschewing jargon and overly technical language, the authors make the benefits of cultivating the soil food web available to a wide audience, from devotees of organic gardening techniques to weekend gardeners who simply want to grow healthy, vigorous plants without resorting to chemicals. Teaming with Nutrients: The Organic Gardener's Guide to Optimizing Plant Nutrition (2013) amazon.com Just as he demystified the soil food web in his ground-breaking book Teaming with Microbes, in this new work Jeff Lowenfels explains the basics of plant nutrition from an organic gardener's perspective. Where Teaming with Microbes used adeptly used microbiology; Teaming with Nutrients employs cellular biology. Most gardeners realize that plants need to be fed but know little or nothing about the nature of the nutrients involved or how they get into plants. Teaming with Nutrients explains how nutrients move into plants and what both macro-nutrients and micro-nutrients do once inside. It shows organic gardeners how to provide these essentials. To fully understand how plants eat, Lowenfels uses his ability to make science accessible with lessons in the biology, chemistry, and botany all gardeners need to understand how nutrients get to the plant and what they do once they're inside the plant.