Flashcards
Soil Salinity and Sodicity
Flashcards do conjunto (7)
- 1Buffer pHResistance to change in soil pH
- 2What is salinity?When there is an accumulation of salts in the soil.
- 3Why is salinity a problem?The salts absorb water, keeping it from being plant available. The plant then dies from dehydration.
- 4What is sodicity?An excess of sodium cations in the soil.
- 5Why is sodicity a problem?Na+ is a small ion with a large water hull. When Na+ occupies the CEC sites, it doesn't have enough charge to keep the colloids together, so they repel and cause deflocculation.
- 6How do we remedy salinity?By leaching the soils
- 7How do we remedy sodicity?By adding gypsum
Informações
- Descrição
- Definitions of salinity and sodicity
- Criado por
- Leah Jones
- Visualizações
- 16
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- Avaliação