Contains a list of commercial fertilizer, it’s composition and the manufacturer
https://cfqcti.dacnet.nic.in/indfert.html
This one is describes inoculation of plants with potassium fixating bacteria. It describes techniques to isolate bacteria of interest. It also contains a list of tables comparing standard yields of some plants with inoculated ones. The standard yields is of interest.
https://ncof.dacnet.nic.in/Training_manuals/Training_manuals_in_English/Potashmobilizing.pdf
@KiranKalakotiR @drishtantmkawale you might find this paper very interesting.