OBJECTIVE FORESTRY

Detailed explanation-1: -In addition to the plant material in leaf litter, humus is composed of decaying animals, such as insects, and other organisms, such as mushrooms. Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up.

Detailed explanation-2: -Dead and decayed residue of plants and animals is called humus.

Detailed explanation-3: -Successive decomposition of dead material and modified organic matter results in the formation of a more complex organic matter called humus (Juma, 1998). This process is called humification.

Detailed explanation-4: -Microorganisms act upon the dead plants to produce a thick brown or black substance called humus. The microorganisms convert the dead plants and animals to humus and are known as decomposers, like bacteria and fungi. Humus is a very important component of the soil as it contains many useful minerals and nutrients.