What term refers to materials added to soil such as peat moss or perlite to improve nutrition, prevent compaction, or improve drainage?

What term refers to materials added to soil such as peat moss or perlite to improve nutrition, prevent compaction, or improve drainage?

• A. Soil Amendments
• B. Soluble Salts
• C. Pore Space
• D. Stress Factors

Answer: (A)

Materials added to soil to modify its structure, water movement, and nutrient-holding capacity are called soil amendments. Peat moss and perlite are classic examples. Peat moss is organic matter that helps loosen compacted soil, increases how much water the soil can hold, and supports beneficial microbes for nutrient availability. Perlite is an inert mineral that creates air spaces, improving drainage and soil aeration to prevent root suffocation and compaction. Together, these amendments adjust the soil environment to promote healthier root growth and better plant performance. Soluble salts are nutrients dissolved in water, not amendments you add to alter soil structure; pore space is simply the empty spaces in soil, not a material you introduce; stress factors refer to adverse conditions affecting plants, not additives.

Materials added to soil to modify its structure, water movement, and nutrient-holding capacity are called soil amendments. Peat moss and perlite are classic examples. Peat moss is organic matter that helps loosen compacted soil, increases how much water the soil can hold, and supports beneficial microbes for nutrient availability. Perlite is an inert mineral that creates air spaces, improving drainage and soil aeration to prevent root suffocation and compaction. Together, these amendments adjust the soil environment to promote healthier root growth and better plant performance.

Soluble salts are nutrients dissolved in water, not amendments you add to alter soil structure; pore space is simply the empty spaces in soil, not a material you introduce; stress factors refer to adverse conditions affecting plants, not additives.