Colloids
The term used for how ions are attached to soil particles
What is adsorption?
These are the units, that CEC is measured in.
What are meq/100 g of soil?
It is a logarithmic scale index of hydrogen.
What is pH?
The way clay particles respond to high sodium levels in the soil.
What is dispersion or disperse?
These two types of clay sheets make up all clay types.
What are tetrahedral and octahedral sheets?
This is the order of the three main soil textures from highest to lowest CEC.
What is clay, silt, and sand?
A term used to describe a soils resistance to change.
What is buffering or buffer capacity?
The condition a soil has when the pH > 8.5, EC <2, and SAR is greater than 15
What are sodic soils?
Clays of this type do not shrink and swell, while these other clay types do.
What are 1:1 and 2:1 clays?
This method allows CEC to be estimated.
What is 1/2 the clay% and twice the OM%?
Soils with these two properties, have high buffering capacity.
What are clay and organic matter?
Soils with a high EC >2 and lower than 8.5 pH have this name.
What are saline soils?
Clays that shrink and swell have this type of soil sheet arrangement.
What is an octahedral sheet sandwiched between two tetrahedral sheets.
These are two rules that govern CEC exchange reactions. The others being product solubility constant and charge equivalence.
What is tenacity and reversibility?
When pH approaches 4.5, plants suffer because this element becomes toxic to plants
What is aluminum toxicity?
Soils with a sodium enriched B horizon are categorized into this soil order.
What is solonetzic soils?
When this occurs, the net charge of the clay layer can change.
What is isomorphic substitution?
These 3 things are involved as nutrients are removed from soil.
What are clay surfaces, soil solution, and plant uptake.
This fertilizer product causes twice as much acidification of the soil as most others
What is elemental sulfur?
A potential biological practice to reduce soil salinity.
What is growing deep rooted plants in rotation.