Manures and Fertilizers
Plant requires food/nutrients/elements for its growth and development which are absorbed through soil. The nutrient supplying sources are manures and fertilizers. Application of manures and fertilizers to the soil is one of the important factors which help in increasing the crop yield and to maintain the soil fertility. N, P and K are the 3 major elements required for the crop growth.
Manure: It is a well decomposed refuse from the stable and barn yards including both animal excreta and straw or other litter. Or
The term manure implies to the any material with the exception of water which when added to the soil makes it productive and promotes plant growth.
Fertilizers: These are industrially manufactured chemicals containing plant nutrients. Or
It is an artificial product containing the plant nutrients which when added to soil makes it productive and promotes plant growth.
Difference between Manures and Fertilizers:
Plant or animal origin
Chemical synthesized or manufactured
Organic in nature
Inorganic in nature
Conc. Of nutrients
Supply organic matter
Supply inorganic matter
May or may not be readily available
Supply all the primary nutrients including Micronutrient
Supply specific type of nutrients one, two or three. micro nutrients may or may not be present
Effect on Soil Health
Improves physical condition of soil
Do not improve the physical condition of soil
Effect on plant growth
No bad effect when applied in large quantities.
Adverse effect on plant whenever there is deficiency or excessive application