Question

Why do farmers use manure and fertilisers in their field ?

Answer 1

$\fcolorbox{pink}{aqua}{HEY MATE ANSWER}$

They use manure because it is a cheap fertilizer, plus they need somewhere for it to go anyways. Fertilizers are used because they increase crop production. Used properly, the gains you get from applying fertilizers should outweigh the costs of using them.

Answer 2

The farmers uses manure and fertilizers

in their fields because to get good yield

and good soil fertility .

To get good and high yield crops .

Incresement of food production .