The substitution of manure and humus with inorganic fertilizers that increase soil fertility is called

Answer to this Question is Chemical Farming.

Explanation:

The substitution of manure and humus with inorganic fertilizers that increase soil fertility is called Chemical Farming.

Using Humus and Manure and other organic elements increase the fertility organically, but sometimes, we also need to use inorganic fertilizers like insecticides, pesticides, fungicides and herbicides etc to increase the soil fertility, in an inorganic way, which is known as Chemical Farming. Chemical farming helps us in producing more yield on the less available land. With the help of it, diseases in the crops which are caused by the insects can be reduced significantly. Different kinds of unwanted herbs produced in the crops can be decreased with the help of chemical farming.