TimTurf, The sugars are created by the plant through photosynthesis thats why we would cut down the sugar cane as kids and have natural candy treats. Thats where all sugars come from. Corn is sweet, Maples give us syrup, apples are sweet. The correct microbes hold the nutrients for the plants and also maintain the proper PH. Lawns as they are are not a natural occurrence the total biological ecology is absent..The absent biology would provide the proper organic matter in the normal death and rebirth cycle of nature. A forest is a complete ecology with leaves falling, animals, living, eating, defecating and dying. We do not need to provide organic matter to a forest but we do to the limited ecology of a suburban lawn. Excess organics ultimately break down returning to the humus - of course it may be that I am incorrect about this. It has been awhile since college ecology and I am just know studying about this new Soil FoodWeb idea.