what are some chemical properties of soil?
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Chemical Analysis. Soil chemical properties, including heavy metal concentrations, pH, total carbon, total nitrogen, CEC, exchangeable calcium (Ca), magnesium (Mg) and potassium (K), exchangeable Al and hydrogen (H) and available phosphorous (P), were determined following standard laboratory methods.
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['A chemical property is a characteristic of a substance that may be observed when it participates in a chemical reaction.', 'Examples of chemical properties include flammability, toxicity, chemical stability, and heat of combustion.']
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Soil quality is how well soil does what we want it to do. More specifically, soil quality is the capacity of a specific kind of soil to function, within natural or managed ecosystem boundaries, to sustain plant and animal productivity, maintain or enhance water and air quality, and support human health and habitation.
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['Alluvial Soils.', 'Black Soils.', 'Red Soils.', 'Desert Soils.', 'Laterite Soils.', 'Mountain Soils.']
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['Sand.', 'Silt.', 'Clay.', 'Loam.', 'Topsoil.', 'Subsoil.', 'Soil crust.', 'Claypan.']
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['Sedimentation.', 'Runoff.', 'Erosion.', 'Dissolved oxygen.', 'pH.', 'Temperature.', 'Decayed organic materials.', 'Pesticides.']
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All soils contain mineral particles, organic matter, water and air. The combinations of these determine the soil's properties – its texture, structure, porosity, chemistry and colour. Soil is made up of different-sized particles.
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['Composition and Characteristics of soil. The scientific study of soil is called pedology. ... ', 'Mineral Particles: Mineral particles are the largest ingredient and make up approx 45% of soils . ... ', 'Organic Matter: ... ', 'Air and Water: ... ', 'Texture: ... ', 'Colour: ... ', 'PH Value:']
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The main four types of soil structure are columns, blocky, granular and plate-like. Soil structure is based on the shape that is takes from its chemical and physical properties.
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Introduction. On the basis of organic matter content, soils are characterized as mineral or organic. Mineral soils form most of the world's cultivated land and may contain from a trace to 30 percent organic matter. Organic soils are naturally rich in organic matter principally for climatic reasons.
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['Particle Size. ... ', 'Structure. ... ', 'Organic Content. ... ', 'Permeablity and Water-Holding Capacity. ... ', 'Identifying Clay.']
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Soil pH is important because it influences several soil factors affecting plant growth, such as (1) soil bacteria, (2) nutrient leaching, (3) nutrient availability, (4) toxic elements, and (5) soil structure. ... Plant nutrients are generally most available to plants in the pH range 5.5 to 6.5.
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Soil Composition Components of soil: The four major components of soil are shown: inorganic minerals, organic matter, water, and air. The amount of each of the four major components of soil depends on the quantity of vegetation, soil compaction, and water present in the soil.
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The structure of the soil, especially of clay, is affected by pH. In the optimum pH range (5.5 to 7.0) clay soils are granular and are easily worked, whereas if the soil pH is either extremely acid or extremely alkaline, clays tend to become sticky and hard to cultivate.
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Soil index properties are properties which facilitate identification and classification of soils for engineering purposes. The nature of some properties differs for coarse- and fine-grained soils. Coarse-grained (non-cohesive) soil index properties are: particle-size distribution.
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Soil pH is one of the most important characteristics of soil fertility, because it has a direct impact on nutrient availability and plant growth. Most minerals and nutrients are more soluble in acid soils than in neutral or slightly alkaline soils, (Bohn, 2001).
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Figure: Components of soil: The four major components of soil are shown: inorganic minerals, organic matter, water, and air. The amount of each of the four major components of soil depends on the quantity of vegetation, soil compaction, and water present in the soil.