Soil Acidity

Some articles on soil, soils, soil acidity, acidity:

Agriculture In England - Land
... Main article Soil Soil is a complex mix of mineral and organic components, produced when rock is weathered and acted on by living organisms ... Most British soils are 2% to 5% organic and 95% to 98% mineral, but soils such as peat may contain up to 50% organic matter ... In the British Isles as far south as the Thames Valley, the soil has been heavily glaciated, which not only ground down the rock but redistributed the resulting matter ...
Sources of Soil PH - Soil Acidity
... Acidity in soils comes from H+ and Al3+ ions in the soil solution and sorbed to soil surfaces ... is the measure of H+ in solution, Al3+ is important in acid soils because between pH 4 and 6, Al3+ reacts with water (H2O) forming AlOH2+, and Al(OH)2+, releasing extra H+ ions ... processes contribute to the formation of acid soils including rainfall, fertilizer use, plant root activity and the weathering of primary and secondary soil minerals ...
Soil Biodiversity - Soil Management and Biodiversity - Soil Process Impacts
... Soil acidification Soil acidity (or alkalinity) refers to the concentration of hydrogen ions (H+) in the soil ... Measured on the pH scale, soil acidity is an invisible condition that directly affects soil fertility and toxicity by determining which elements in the soil are available for absorption by plants ... Soil acidity increases (soil acidification) by removal of agricultural product from the paddock, leaching of nitrogen as nitrate below the root zone inappropriate use of nitrogenous fertilizers and build up of ...

Famous quotes containing the word soil:

    Prejudices, it is well known, are most difficult to eradicate from the heart whose soil has never been loosened or fertilized by education; they grow there, firm as weeds among stones.
    Charlotte Brontë (1816–1855)