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Common Soil Amendments
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Lime
Benefits: Raises soil pH, reduces soil acidity, adds calcium and magnesium. Used to correct pH in acidic soils and improve nutrient availability.
Perlite
Benefits: Improves aeration and drainage, promotes root growth, lightweight. Used to aerate soil and improve drainage in heavy soils.
Gypsum
Benefits: Adds calcium without changing pH, improves soil structure, reduces soil salinity. Used to treat sodic soils and to add calcium.
Manure
Benefits: Adds nutrients, improves soil fertility, enhances microbial activity. Used as an organic fertilizer to enrich soil.
Compost
Benefits: Adds organic matter, improves soil structure, provides nutrients. Used to enhance soil fertility and microbial activity.
Peat moss
Benefits: Improves water retention, adds organic matter, slightly lowers pH for acid-loving plants. Used as a soil amendment for water retention.
Green manure
Benefits: Adds organic matter, fixes nitrogen, suppresses weeds. Used to cover crop that is grown and plowed into the soil.
Biochar
Benefits: Increases water retention, reduces nutrient leaching, sequesters carbon. Used to improve soil's physical and chemical properties.
Mulch
Benefits: Conserves soil moisture, reduces weed growth, regulates soil temperature. Used to cover the soil surface around plants.
Vermiculite
Benefits: Enhances water retention, aeration, and nutrient holding capacity. Used to condition the soil and improve its structure.
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