In order to keep the soil healthy, we need not add a lot of fertilizers or chemicals. We have to monitor the acidity and moisture availability. This makes the microbes active and convert soil micronutrients solubilized and made available to the plants. To fecilitate carbon and micronutrients availability, we have to add organic compost of biological wastes.
Lot more insights are given with Trichoderma, Pseudomonas, Bacillus, Azospirillum, Anabena, etc. as examples. Read my article by clicking here: “Soil Microbial Enhancement with Probiotic Agents“