OBJECTIVE FORESTRY

Detailed explanation-1: -Soil provides anchorage for plants and provides the necessary nutrients and water for the growth of plants.

Detailed explanation-2: -Soil as a medium for plant growth can be described as a complex natural material derived from weathering of rocks and decomposition of organic materials, which provide nutrients, moisture and anchorage for plants.

Detailed explanation-3: -Soil provides the structural support to plants used in agriculture and is also their source of water and nutrients. Soils vary greatly in their chemical and physical properties. Processes such as leaching, weathering and microbial activity combine to make a whole range of different soil types.

Detailed explanation-4: -Oxygen is consumed and carbon dioxide is generated by the metabolic activity of microorganisms and plant roots in the soil. Oxygen, carbon dioxide and water vapor all diffuse into and out of the soil.

Detailed explanation-5: -Soil is a major source of nutrients needed by plants for growth. The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK. Other important nutrients are calcium, magnesium and sulfur.