what is soil amelioration
soil amelioration. All Science Biotechnology and Genetics Food Biotechnology. The improvement of poor soils. Includes the fungal and bacterial break down of plant organic matter, to form humus; the release of minerals-such as phosphates-to the soil, making them available to plants; the fixation of nitrogen.Can sometimes include an element of bioremediation.ncludes the fungal and bacterial break down of plant organic matter, to form humus; the release of minerals-such as phosphates-to the soil, making them available to plants; the fixation of nitrogen. Can sometimes include an element of bioremediation.