Question

What is soil fertility? What are the sources of soil fertility?

Answer 1

Hint: Soil fertility is the measure of ensuring that the soil is deemed for the growth of plants and will provide sufficient yield when plants are grown on it and it is said to support cultivation.

Complete answer: Soil fertility is the criteria that judges if the soil is fit for the growth of plants or not. It is the measure of the ability of the soil which determines its growth ability.
Soil fertility has many sources like manure, fertilizers, absorbing water, and minerals, etc.
The quality of soil can be increased by the above-mentioned sources and the soil is then considered fertile.
Fertile soil is the one that has all the basic minerals and nutrients that are required by the plant to grow and develop.
Both macronutrients and micronutrients are available in adequate amounts in the fertile soil. Souces of soil fertility means the methods or techniques which are capable of increasing the fertile nature of the soil.

Additional information: Inorganic fertilizers are less expensive and have higher concentrations of nutrients as compare to organic fertilizers.
Also, since nitrogen, phosphorus, and potassium must be in the inorganic forms to be taken up by plants, inorganic fertilizers are immediately bioavailable to plants without modification.
There are six main soil types:
Clay soil.
Sandy soil.
Silty soil.
Peaty soil.
Chalky soil.
Loamy soil.

Note: Some soil is already fertile still, fertility is a measure that can be increased or enhanced by the application of various external substances like fertilizers and other essential nutrients.