Among the given options, which one is not correct for the use of large amount of fertilizers and pesticides?

Fertilizers are basically chemical compounds. Because of their addition , soil fertility may get increased for a short time period, but in a long run they makes the land barren. Due to their addition the pH of soil becomes unfavorable for the Microorganisms and they die. No Microorganisms means no nitrogen fixation and we will need to add more fertilizers and successive use makes the soil unfertile and barren.