What are complex fertilizers ?

What are fertilizers? What are mixed fertilzers? Why do farmers add fertilizer to the soil? How should we store fertilizes?

What are biofertilizers ? Why are biofertilizers preferred to chemical fertilizers ?

What are complex reactions ? Give an example.

What are nitrogenous fertilizers ? Give one example.

Why are manure and fertilizers used in fields?

Why are manure and fertilizer used in fields ?

What are Fertilizers ?