Which of the following is a common soil cation example among the options?

Prepare for the Rangeland Soil Exam. Study with flashcards and multiple choice questions, each offering hints and explanations. Ensure success in your test!

Multiple Choice

Which of the following is a common soil cation example among the options?

Explanation:
In soils, cations are positively charged ions that occupy exchange sites on clays and organic matter. Calcium is a common soil cation because it is a major plant-available nutrient present as Ca2+ and acts as a base cation that helps flocculate soil particles, improving structure and porosity. The other substances listed are anions, carrying negative charges: nitrate (NO3−), sulfate (SO4^2−), and chloride (Cl−). They can move in the soil solution but do not occupy the positively charged exchange sites like calcium does. Therefore, calcium is the example of a soil cation among the options.

In soils, cations are positively charged ions that occupy exchange sites on clays and organic matter. Calcium is a common soil cation because it is a major plant-available nutrient present as Ca2+ and acts as a base cation that helps flocculate soil particles, improving structure and porosity. The other substances listed are anions, carrying negative charges: nitrate (NO3−), sulfate (SO4^2−), and chloride (Cl−). They can move in the soil solution but do not occupy the positively charged exchange sites like calcium does. Therefore, calcium is the example of a soil cation among the options.

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