Search results
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.
- 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
- Sandy Soil
- Silt Soil
- Clay Soil
- Loam Soil
Sandy soil contains more than 35% sand and less than 15% clay and slit. Primarily this soil formed due to erosion and fragmentationof rocks like granite, limestone, and quartz. Its particles are comparatively large ranging from 0.2 to 2 mm in size making it extremely porous. This lowers its water-holding capacity which makes them unsuitable for mos...
Silt is a sediment material that is transported by moving currents. Its particles are smaller than sandy soil but larger than clay particles. With particles measuring from 0.002 to 0.06 mm, it is rich in nutrients with a high water-retaining capacity which makes it quite fertile. This type of soil is found near the river, lakes and water bodies. Su...
Clay soil contains the finest particle among all soil types measuring less than 0.002 mm. The particles in this soil are tightly packed, leaving very little or no space in-between. This leaves the plant rootswith very little space to flourish. It is rich in nutrients and organic matter and can hold more water than most other soil types. Suitable cr...
Loam soil is a combination of sand, silt and clay soil which gives advantages of each of these soils. It has a high humus content, good water holding capacity and sufficient aeration. This gives the roots of a plant to get enough water, air, and space to grow making it suitable for cultivation. Mainly used for gardening, it is also referred to as t...
Soil organic matter is the fraction of the soil that consists of plant or animal tissue in various stages of breakdown (decomposition). Most of our productive agricultural soils have between 3 and 6% organic matter. Soil organic matter contributes to soil productivity in many different ways.
soil organic matter - Plant, animal, and microbial residues, in various states of decomposition. soil texture - The percentages of sand, silt, and clay particles in a soil.
Aug 11, 2022 · Soil consists of organic matter (about 5%), inorganic mineral matter (40-45% of soil volume), water (about 25%) and air (about 25%) (Figure 13.6.3). The amount of each of the four major components of soil depends on the amount of vegetation, soil compaction, and water present in the soil.
Soil consists of four major components: 1) inorganic mineral matter, 2) organic matter, 3) water and air, and 4) living matter. The organic material of soil is made of humus, which improves soil structure and provides water and minerals.
Soil organic matter consists of a variety of components. These include, in varying proportions and many intermediate stages, an active organic fraction including microorganisms (10-40 percent), and resistant or stable organic matter (40-60 percent), also referred to as humus.
