them paper 2: what are the three main essential elements for fertilisers and why might these elements be missing from the soil

Question

what are the three main essential elements for fertilisers and why might these elements be missing from the soil

ruby hatton · Accepted Answer

-nitrogen, phosphorus, potassium
-they could be missing if they've been used up by a previous crop

What are the three main essential elements for fertilisers and why might these elements be missing from the soil