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- Organic soil is often used to describe soil that has no chemical additives, but the USDA does not regulate how soil is labeled. Soil that states it is organic might contain organic materials, but might not be 100% natural. Depending on the source, non-organic soil can still be used in organic gardening and organic soil may contain chemicals.
smartgardenhome.com/soil/organic-vs-non-organic/
Soil organic matter (SOM) is the organic matter component of soil, consisting of plant and animal detritus at various stages of decomposition, cells and tissues of soil microbes, and substances that soil microbes synthesize. SOM provides numerous benefits to soil's physical and chemical properties and its capacity to provide regulatory ...
- CO 2, CO 32−, HCO 3−, CH 4, C
- H 2 PO 4−, HPO 42−
- NH 4+, NO 2−, NO 3−, N 2 (gas), N 2 O (gas)
- S, H 2 S, SO 32−, SO 42−, CS 2
Nov 25, 2021 · Evaluate the importance of organic matter on soil physical, chemical and biological properties and processes. Explain the sources and turnover processes of soil organic matter. Discuss the spatial distribution and land management of soil organic matter.
Soil organic matter contains an estimated four times as much carbon as living plants, and in fact carbon stored in all the world’s soils is two to three times the amount in the atmosphere. As soil organic matter is depleted, it becomes a source of carbon dioxide for the atmosphere.
Apr 29, 2020 · Usually, organic soil does not contain any chemicals or pesticides, but there is no USDA regulation for how soils are labeled. As long as the soil contains only natural, carbon-based ingredients, it can be labeled as organic, so some types of organic soil may not be 100% natural.
- Joe Skinner
Nov 18, 2023 · The enormous influence of organic matter on so many of the soil’s properties—biological, chemical and physical—makes it of critical importance to healthy soils (Figure 2.3). Part of the explanation for this influence is the small particle size of the well-decomposed portion of organic matter, the humus.
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All organic matter contains carbon (C). It also contains: Nitrogen (N) Phosphorus (P) Sulphur (S) Potassium (K) Magnesium (Mg) Calcium (Ca) A range of micronutrients, e.g. copper (Cu) and zinc (Zn) Soil organic matter is found in many forms with a range of ages.
