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.

Soil organic matter (SOM) is the organic matter content 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 (Brady & Weil, 2008).

2024年10月18日 · Understanding what organic matter is and its role is essential for anyone interested in gardening, agriculture, or environmental science. This article will delve into the composition, importance, and management of organic matter in soil, exploring why this seemingly simple substance is so vital to our planet.

Soil organic matter holds 10 to 1,000 times more water and nutrients than the same amount of soil minerals. Beneficial soil organisms become more numerous and active with diverse crop …

Soil organic matter is the key to building and maintaining healthy soils because it has such great positive influences on essentially all soil properties—aggregation, nutrient availability, soil tilth and water availability, biological diversity and so on— helping to grow healthier plants.

Soil organic matter has a natural tendency to build when the soil is occupied by vegetation and not disturbed. For example, soil organic matter levels slowly increase with time in native prairie or forest soils. Soils managed for crop production are a different story.

2015年11月23日 · Long-standing theory suggests that soil organic matter is composed of inherently stable and chemically unique compounds. Here we argue that the available evidence does not support the...

What is Soil Organic Matter? Organic matter is made up of different components that can be grouped into three major types: Plant residues and living microbial biomass. Active soil organic matter also referred to as detritus. Stable soil organic matter, often referred to as humus.

Carbon dioxide is all around us, but plants convert that carbon into organic forms and remove it from the atmosphere. The soil is a significant storehouse for previous generation’s carbon, in a variety of different forms. The term ‘organic matter’ is used to refer to things consisting of organic carbon-so anything that was alive.

Organic matter in soil is the key to soil health. SOM improves many physical, chemical, and biological characteristics of the soil, including water holding capacity, cation exchange capacity, pH buffering capacity, and chelating of micronutrients.