The Ill Effects of Acidity in Subsoils Can Be Ameliorated

question 34

Multiple Choice

The ill effects of acidity in subsoils can be ameliorated by adding gypsum (CaSO₄^-2H₂O) to the soil surface.Which of the following most likely helps account for this effect?

• A)The gypsum replaces hydrogen from colloids which moves down the profile and decreases the pH of the subsoil layers.
• B)Calcium from the gypsum replaces hydrogen from colloids in the subsoil thereby increasing the soil pH.
• C)Gypsum dissolves and leaches downward,increasing the Ca/Al ratio in the soil solution in subsoil layers.
• D)Sulfate ions from the gypsum react with H ions in the subsoil to form H₂SO₄.
• E)Gypsum stimulates root growth in the surface soil horizons.

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Definitions:

House's Path-Goal Model

A theory that suggests a leader's behavior is contingent to the satisfaction, motivation, and performance of their subordinates, aiming to clarify paths to goal achievement.

Directive Leadership

A leadership style where the leader tells team members what to do, how to do it, and when it needs to be done, with little input from followers.

Supportive Leadership

A leadership style characterized by the provision of encouragement, feedback, and resources to help individuals or teams succeed.

Directive Leadership Style

A leadership approach where the leader tells team members what to do, how to do it, and when it needs to be done, with little input from them.