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Bioavailable phosphorus (available to soil life) is the element in soil that is most often lacking. Nitrogen and potassium are also needed in substantial amounts. For this reason these three elements are always identified on a commercial fertilizer analysis.
The physical properties of soil, in order of decreasing importance for ecosystem services such as crop production, are texture, structure, bulk density, porosity, consistency, temperature, colour and resistivity. [1]
Soil is a major component of the Earth's ecosystem.The world's ecosystems are impacted in far-reaching ways by the processes carried out in the soil, with effects ranging from ozone depletion and global warming to rainforest destruction and water pollution.
Soil formation, also known as pedogenesis, is the process of soil genesis as regulated by the effects of place, environment, and history. Biogeochemical processes act to both create and destroy order within soils.
Soil compaction is a vital part of the construction process. It is used for support of structural entities such as building foundations, roadways, walkways, and earth retaining structures to name a few.
Soil texture is a classification instrument used both in the field and laboratory to determine soil classes based on their physical texture. Soil texture can be determined using qualitative methods such as texture by feel, and quantitative methods such as the hydrometer method based on Stokes' law.
Dewi Sri or Shridevi (Javanese: ꦢꦺꦮꦶꦱꦿꦶ, Balinese: ᬤᬾᬯᬶᬲ᭄ᬭᬶ, Dewi Sri, Sundanese: ᮑᮄ ᮕᮧᮠᮎᮤ ᮞᮀᮠᮡᮀ ᮃᮞᮢᮤ, Nyai Pohaci Sanghyang Asri) is the Javanese, Sundanese, and Balinese Hindu Goddess of rice and fertility, still widely worshiped on the islands of Java, Bali and Lombok, Indonesia. [1]
Global variation in soil pH. Red = acidic soil. Yellow = neutral soil. Blue = alkaline soil. Black = no data.. Soil pH is a measure of the acidity or basicity (alkalinity) of a soil.