Yes sir,

Always biofertilizers be a successful alternative to chemical fertilizers scientifically but there should by plentiful of Organic matter / organic fertliser in soil. So automatically different biofertilisers which contain N fixing bacteria, PSB, PMB, ZMB, VAM etc. convert the organic matter in to nutrients form and supplied to roots of plants like chemical fertilisers only.

Especially for medicinal plants now a days we are following organic cultivation with biofertlisers and found that results are very good and free from harmful chemicals.

It is not a matter of whether organic can replace synthetic fertilizers. In the long term they have to replace synthetics and it will take time. Bio fertilizers are beneficial in increasing the yield as they utilize the chemical fertilizers more effectively and control the soil borne diseases.Biofertilizers propose a sustainable solution to the reduction in the use of chemical fertilizers while meeting the demands of the growing population. The use of biofertilizers in place of chemicals is likely to reduce the impact on soil, air and water and also has the potential to improve human health. They are not only high in nutritional value but also supply productive microbes to the soil. Biofertilizers increase the effectiveness of chemical fertilizers by using a carrier material on which microbes are mounted.Bio fertilizers are mainly constituted of selected living cells of microbes which provide the plants with nutrients through their root system. The microbes in these fertilizers use different mechanisms to provide nutrients to the plants. They are capable of nitrogen fixing, phosphate solubilizing, phosphate mobilizing, and promotion of rhizobacteria.

Especially the major nutrients N, P and K. How are they made?N is made by splitting atmospheric N2 with high inputs of fossil fuels.fuel price goes up ---> N fertilizer price goes up.P is mined as a rock and then treated with acid to produce superphosphate.due to limited resources the price is climbing steadily.

Potassium is mined as well and the prices are also going up.so all three are in a sense non renewable and all three will get more expensive in the future. some portion is taken up by plants, some portion is leaching into the water table or washed away as run-off.the portion that is the crop will be eaten, either by us directly or by an animal we feed and then eat and then a part of the eaten portion will turn into waste that is washed away and who knows/cares where it goes.In contrast to the bio-fertilizers, the nutrient based fertilizers give better results and are reliable as well. The core effectiveness of the procedure is maintained by the biological and chemical interactions which are further affected by physical factors like pH, moisture, temperature and other environmental variables as well. If the conditions are not suitable for microbes to multiply and do their work properly their population diminishes gradually with time, and this results in waste of time and money.Due to the unavailability of the suitable culture in which the bacteria grow and multiply itself, the bio-fertilizers shelf life is restricted. Peat of good quality containing carbon content more than 75% is very rare. Since a good quality carrier should have a combination of various characteristics like moisture holding capacity, free of toxic substances and adjustable pH, finding such carrier is not an easy task.

The world population is growing rapidly and is expected to reach 9 billion in 2040. Due to this population explosion and the changing diets of people there is an expected increase in the demand of food by 70% in 2050. Other factors may include problems like increase in the population, water scarcity, climate change and volatility are decreasing the agricultural yield. Hunger is already common in the world with 870 million people suffering from chronic hunger. In the future the bio fertilizers and pesticides are likely to be the center of attention globally. They are known to be the solution to weeds, pathogens and insects. At the same time, they are less harmful to human health and the environment.

The conclusion is that the whole world needs a type of agriculture that is regenerative and mimics the nutrient cycles of natural systems to guaranty a constant supply of those nutrients and I believe that the developing countries will be the first to transition to this new kind of agriculture since they will be the first who will no longer be able to afford the only 150 year old so called "conventional agriculture".

https://www.researchgate.net/publication/260889857_Up_to_52_N_fertilizer_replaced_by_biofertilizer_in_lowland_rice_via_farmer_participatory_research

https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.fftc.org.tw%2Fhtmlarea_file%2Flibrary%2F20110804152212%2Feb603.pdf&psig=AOvVaw1dJD2-kSiQt_uHkzuOw1tq&ust=1653370761499000&source=images&cd=vfe&ved=0CAwQjRxqFwoTCODMvaL09PcCFQAAAAAdAAAAABA7

Dear Prem Baboo

Thanks for the wonderful answer that you provided with valuable scientific sources. Thank you!

Dear I.V.Srinivasa Reddy

Yes, organic fertilizers have become one of the safe means for plants and the environment at the same time, in addition to their vital role in the growth of the plant in quantity and quality. Thank you!

No! The only substitute is for parts of N in legume crops! However, biofertilizer is not only Rhizobia!

Mahdi S. Jaafar yes for sure but this will take some time as I have personally tried this to check the results and believe me the natural biofertilizers enhances the overall soil and its nature