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The soil pH is a measure of the acidity or alkalinity in soils. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H3O+aq) in a solution. In water, it normally ranges from -1 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is alkaline. Soil pH is considered a master variable in soils as it controls many chemical processes that take place. It specifically affects plant nutrient availability by controlling the chemical forms of the nutrient. The optimum pH range for most plants is between 5.5 and 7.0, however many plants have adapted to thrive at pH values outside this range.

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  • Soil pH
  • Boden-pH
  • Reazione del terreno
  • Odczyn gleby
  • Acidez do solo
  • Кислотность почвы
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  • The soil pH is a measure of the acidity or alkalinity in soils. pH is defined as the negative logarithm (base 10) of the activity of hydronium ions (H+ or, more precisely, H3O+aq) in a solution. In water, it normally ranges from -1 to 14, with 7 being neutral. A pH below 7 is acidic and above 7 is alkaline. Soil pH is considered a master variable in soils as it controls many chemical processes that take place. It specifically affects plant nutrient availability by controlling the chemical forms of the nutrient. The optimum pH range for most plants is between 5.5 and 7.0, however many plants have adapted to thrive at pH values outside this range.
  • La reazione del terreno è una proprietà chimica che si identifica con il pH, misurato per via potenziometrica, di una sospensione del campione di terreno in acqua.
  • Der Boden-pH ist ein Merkmal des Säure- und Basegehaltes des Bodens. Er basiert auf dem Maß des pH-Wertes und wird durch natürliche Puffersysteme beeinflusst. Der Boden-pH-Wert wird in einer Suspension von Boden in Salzlösungen von neutraler Reaktion (0,01 n Calciumchlorid oder Kaliumchlorid) elektrometrisch gemessen.
  • Odczyn glebowy, właściwość gleby wyrażona przez stosunek stężenia jonów wodorowych H+ do jonów wodorotlenkowych OH- (odczyn roztworu określony w jednostkach pH) w fazie stałej gleby i w jej roztworze. Odczyn wskazuje na kwasowość lub zasadowość gleby, wyróżnić możemy więc: Ponieważ w klimacie Polski gleby często wykazują zakwaszenie, ustalenie ich odczynu ułatwia przeprowadzanie zabiegów agrotechnicznych, ma więc duże znaczenie praktyczne, pozwalając na określenie potrzeb wapnowania gleby.
  • A acidez do solo ou pH do solo, é a concentração de íons H+ presente na solução do solo e um dos indicadores de sua fertilidade. A faixa de pH ideal dos solos para a agricultura é entre 5,5 e 6,5. Isto porque é nesta faixa que os nutrientes ficam mais disponíveis às plantas, ou seja, na solução do solo. A acidez do solo tem origem nas rochas que formam o solo, na interação do solo com o clima - principalmente em áreas onde a pluviosidade é elevada-, na absorção dos sais alcalinos pelas plantas cultivadas ou na reação de ácida de certos produtos utilizados na fertilização do solo. A acidez do solo pode ser corrigida com a incorporação no solo de substâncias alcalinas como conchas moídas, margas e calcário.
  • Кислотность почвы — способность почвы проявлять свойства кислот. Наличие ионов водорода (Н-ионов) в почвенном растворе, а также обменных ионов водорода и алюминия в почвенном поглощающем комплексе при неполной нейтрализации придаёт почве кислую реакцию. Для характеристики почвенной кислотности используется ряд показателей:
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