Soil organic matter is all the organic material in soil, consisting of animal and plant detritus from different stages of decomposition, cellular plants and microbial tissues, and cells of soil microorganisms. Organic soil matter also includes trace amounts of minerals such as potassium, phosphorus, and magnesium, as well as a varying number of elements such as nitrogen, sulfur, and chloride.
The most important constituents of soil organic matter are the microorganisms (organisms that live in the soil), the minerals such as potassium, phosphate, and iron, and trace chemicals and organic compounds such as nitrogen, sulfur, and chloride. Soils are usually categorized into four categories based on their composition of organic matter: decomposed clay, decomposed rock and gravel, aerated clay, and limed clay. There is considerable variation in compositions across different types of soils.
Organic soil particles cannot be decomposed quickly. Clay, which is mostly composed of silica, is very slow to decompose, even under the most adverse conditions, such as excessive water, oxygen, or heat. Rock and gravel soils, which contain high amounts of clay, are known as fine-textured soils and have a variety of potential contaminants.
Sandy soils contain larger amounts of organic matter because the larger solid particles in the sand can easily penetrate the soil to get carried away by plant roots. Sandy soils are therefore beneficial to plant roots because the larger particles in the soil can easily get trapped by plant roots. Small pore spaces in the topsoil layer are especially useful for plant root development.
Sandy soils are less aerated than clay, but they retain moisture better than clay does, which makes them a great choice for gardens with a lot of drainages. They are also ideal for increasing the nutrient concentrations in the soil, making them good for plants that need a lot of nutrients, such as for herbs and vegetables.
Most people choose to purchase BuildASoil organic soil because it is the safest available, however, some people prefer clay since it is less irritating to the skin and is a naturally more humorous soil particle. Both are equally beneficial to your gardens, although each type of organic soil particle has its benefits and drawbacks. Sand is certainly the best choice for gardens, where the majority of the soil is sand (such as at a golf course). Clay soil is perfect for any garden with woody plantings. Organic matter on the other hand is perfect for any garden that requires slow-release nutrients (such as those needed for small flower plants) and organic matter can also help to balance your soil’s acidity.