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Term: humic substance

Description:

A humic substance refers to a complex mixture of organic compounds that are found in soil, water, and other natural environments. It is produced through the decomposition of plant and animal matter, contributing to the dark color of humus-rich soil. Humic substances are known for their ability to improve soil fertility, retain moisture, and enhance the growth of plants.

Sample Sentences:

1. The presence of humic substances in the soil is crucial for promoting healthy plant growth.

2. Scientists have been studying the composition and properties of humic substances for many years.

3. Adding a small amount of humic substance to your compost can help accelerate the decomposition process.

4. The use of humic substances as a natural fertilizer has gained popularity among organic farmers.

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