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Agricultural Soil Amendments
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Lime
Purpose: Raise soil pH to alleviate acidity. Methods: Broadcasting, tilling. Effects: Increases pH, calcium and magnesium availability in soil.
Biochar
Purpose: Increase soil carbon sequestration, improve fertility. Methods: Mixing into the top layer of soil. Effects: Enhances water retention, microbial activity, and nutrient availability.
Sulfur
Purpose: Lower soil pH for acidic soil preferring plants. Methods: Broadcasting, blending into soil. Effects: Reduces pH, can increase nutrient availability for certain plants.
Green Manure
Purpose: Add nutrients and organic matter, suppress weeds. Methods: Planting and then tilling into soil. Effects: Improves soil structure, nutrient content, and microbial life.
Compost
Purpose: Enhance soil structure and nutrient content. Methods: Top dressing, incorporation. Effects: Improves soil aeration, water retention, and microbial activity.
Mulch
Purpose: Conserve soil moisture, reduce weed growth, and regulate temperature. Methods: Surface application over soil. Effects: Decreases evaporation, erosion, and soil temperature fluctuations.
Manure
Purpose: Provide nutrients and organic matter. Methods: Surface spreading, incorporation into soil. Effects: Enhances soil fertility, structure, and biological activity.
Gypsum
Purpose: Improve soil structure and reduce soil compaction. Methods: Broadcasting, tilling into soil. Effects: Adds calcium without changing pH, useful for reclaiming sodic soils.
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