Chapter 11: Problem 7

Describe the roles that humus, detritus, and soil organisms play in creating a soil favorable to plants. Identify the relationships among these three factors.

Short Answer

Expert verified

Humus, detritus, and soil organisms are fundamental to creating a soil favorable to plants. Humus is the organic component of soil, improving water and nutrient retention. Detritus, consisting of dead organic material, decomposes into humus, replenishing soil nutrients. Soil organisms assist in this decomposition, recycling nutrients and improving soil fertility and structure. These three components are interrelated, all contributing to the cycle of life in the soil.

Step by step solution

Defining Humus

Humus is the organic component of soil formed by the decomposition of leaves and other plant materials by soil microorganisms. It increases the soil’s water and nutrient retention capabilities.

Defining Detritus

Detritus refers to dead particulate organic material, such as fallen leaves or dead animals. It contributes to the humus layer as it decomposes, adding nutrients back into the soil for use by plants.

Defining Soil Organisms

Soil organisms include things like bacteria, fungi, insects, and worms. They break down detritus into humus, recycle nutrients, increase soil fertility, and aid in the formation of soil structure.

Identifying Relationships

The three factors work together in a cycle to create a favorable environment for plant growth. Detritus provides the material for humus. Soil organisms break down this detritus into humus, and humus in turn provides nutrients and improves soil quality for plants.

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Describe the roles that humus, detritus, and soil organisms play in creating a soil favorable to plants. Identify the relationships among these three factors.

Short Answer

Step by step solution

Defining Humus

Defining Detritus

Defining Soil Organisms

Identifying Relationships

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