How to justify the biofertilizers expiry date?

Question

how can we check the fertilizer self life or viability date of their effect?

Answer 1

Bio-fertilizers are ready to use live formulates of such beneficial microorganisms which on application to seed, root or soil mobilize the availability of nutrients by their biological activity in particular, and help build up the micro-flora and in turn the soil health in general. The expiration dates are essential to assure you that you are getting live microorganisms. The expiry date can be useless if the material has been exposed to high or low temperatures in shipment or storage by your supplier. So the only thing that you can depend on is the reliability of your supplier. Find a source that you can depend on and stick with them.