Question

What is Soil Bacteria?

Answer 1

A unicellular organism, similar to modern bacteria, was likely one of the first organisms to evolve on Earth. Over many millennia, life has evolved into a diverse range of life forms. We can, however, trace our roots back to this single-celled organism.

Complete answer:
Bacteria are one of the oldest forms of life on the planet today. Even though most bacteria cause illness in humans, they have a long-term, mutual relationship with us and are vital to our survival. Bacteria are unicellular organisms that belong to the prokaryotic group and lack a true nucleus and a few organelles.
Bacteria make up the majority of soil microbes. They are single-celled organisms, and a single gram of soil can contain billions of bacteria. In response to changes in soil moisture, soil temperature, or carbon substrate, bacteria populations can boom or bust in a matter of days. Some bacteria species are extremely fragile, and even minor changes in the soil environment can kill them.
Bacterial populations are harmed by dry conditions, acidity, salinity, soil compaction, and a lack of organic matter, even though they are largely unaffected by cultivation. It is extremely difficult to build desirable populations of bacteria simply by adding them to the soil, except for certain seed inoculations.
If soil bacteria populations are low, it is most likely due to unfavorable conditions. Addressing problems of acidity and compaction, ensuring good ground cover, and increasing organic matter are all effective (and multi-beneficial) ways to support healthy soil bacteria.

Thus, Soil bacteria are decomposers that add nutrients to the soil by consuming and converting simple carbon compounds into energy.
Pesticides and pollutants in the soil can be decomposed by a variety of soil bacteria, keeping the soil healthy and productive.

Note:
Pseudomonas fluorescens , a soil bacteria, has an antifungal activity that inhibits the growth of some plant pathogens. Plant growth can be aided by P. fluorescens and other Pseudomonas and Xanthomonas species in a variety of ways. They may produce a compound that inhibits pathogen growth or reduces pathogen invasion of the plant. They may also produce compounds (growth factors) that are beneficial to the body.