Question

Besides mineral particles and organic matter, which properties of soil decide it's fertility?​

Answer 1

Answer:

An ideal soil for plant growth contains 50% porespace and 50% solids, with the porespace filled with equal parts air and water. This distribution rarely occurs because porespace varies with soil texture and soil management. For example, tilling increases porespace, while poor drainage and compaction reduce it.

Soil solids are a blend of mineral materials and organic matter. The mineral materials are typically weathered rock of varying sizes called sand, silt, and clay. The organic matter consists of decaying plant and microbial residues. The relative amounts of porespace and mineral and organic matter vary greatly among different soil types. But for plant growth, most soil scientists agree that 50% porespace, 45% mineral matter, and 5% organic matter make up an ideal ratio (Figure 1–1a). The distribution of soils and porespace in compacted and poorly drained soil is illustrated in Figure 1–1b and Figure 1–1c.

Explanation:

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Answer 2

Answer:

Soil ... Topsoil is usually more fertile than the other layers and ... Clay, with its tiny particle size and platelike structure, holds