Question

what is the role of microorganisms in enriching the soil?​

Answer 1

Answer:

Answer

The use of the chemical fertilizers to meet the ever-increasing demand of agricultural produce has contributed significantly to environmental pollution. So, microorganisms help in increasing the fertility of the soil. The microorganisms which are used for increasing fertility of the soil are known as biofertilisers and this type of farming is known as organic farming. Biofertilisers provide optimum nutrients to crop plants. They enrich the nutrient quality of the soil. The main sources of biofertilisers are bacteria, fungi and cyanobacteria.

Explanation:

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Answer 2

A large portion of the nutrient release from organic materials is carried out by soil microorganisms. Microorganisms utilize the carbon and nutrients in organic matter for their own growth as they break it down. They discharge extra nutrients into the soil so that plants can absorb them.

Enhancing the soil's structure:

• Soil biological activity can enhance soil structure.
• During the breakdown of organic materials, some bacteria and fungi create compounds that chemically and physically link soil particles into micro-aggregates.
• In order to create and sustain aggregates, the fungus can cross-link soil particles with their hyphal strands.
• Numerous kilometers of fungal hyphae might be found in just one gram of soil.
• In addition, soil animals enhance aggregate by eating dirt and increasing porosity by digging into the soil.

Several facts:

1. A handful of soil contains more species than there are humans on the planet, but the majority of them can only be observed under a microscope.
2. In southern Australia, the weight of organisms in a cropping soil's top 10 cm can reach 2 t/ha.
3. The top 2 cm of soil contains about 25% of the soil organisms used for agriculture.
4. Because soil conditions are typically not ideal, the majority of soil organisms (>70%) are dormant at any given moment.
5. Despite the fact that there are just a few species of pest nematodes, there are over 95 non-pest species.

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