Colloids
CEC
pH
Salinity
100

The term used for how ions are attached to soil particles

What is adsorption?

100

These are the units, that CEC is measured in.

What are meq/100 g of soil?

100

It is a logarithmic scale index of hydrogen.

What is pH?

100

The way clay particles respond to high sodium levels in the soil.

What is dispersion or disperse?

200

These two types of clay sheets make up all clay types.

What are tetrahedral and octahedral sheets?

200

This is the order of the three main soil textures from highest to lowest CEC.

What is clay, silt, and sand?

200

A term used to describe a soils resistance to change.

What is buffering or buffer capacity?

200

The condition a soil has when the pH > 8.5, EC <2, and SAR is greater than 15

What are sodic soils?

300

Clays of this type do not shrink and swell, while these other clay types do.

What are 1:1 and 2:1 clays?

300

This method allows CEC to be estimated.

What is 1/2 the clay% and twice the OM%?

300

Soils with these two properties, have high buffering capacity.

What are clay and organic matter?

300

Soils with a high EC >2 and lower than 8.5 pH have this name.

What are saline soils?

400

Clays that shrink and swell have this type of soil sheet arrangement.

What is an octahedral sheet sandwiched between two tetrahedral sheets.

400

These are two rules that govern CEC exchange reactions. The others being product solubility constant and charge equivalence.

What is tenacity and reversibility?

400

When pH approaches 4.5, plants suffer because this element becomes toxic to plants

What is aluminum toxicity?

400

Soils with a sodium enriched B horizon are categorized into this soil order.

What is solonetzic soils?

500

When this occurs, the net charge of the clay layer can change.

What is isomorphic substitution?

500

These 3 things are involved as nutrients are removed from soil.

What are clay surfaces, soil solution, and plant uptake.

500

This fertilizer product causes twice as much acidification of the soil as most others

What is elemental sulfur?

500

A potential biological practice to reduce soil salinity.

What is growing deep rooted plants in rotation.