Manures is prepared by the decomposition of animal and plant wastes.
i. Manure helps in enriching soil with nutrients and organic matter and increasing soil fertility.
ii. The bulk of organic matter in manure helps in improving the soil structure. This involves increasing the water holding capacity in sandy soil.
iii. Manures contain substances which act as stimulants for seed germination and plant growth.
On the other hand, fertilizers are mostly inorganic compounds prepared from various chemicals.
i. Their excessive use also reduces soil fertility. Continuous use of fertilizers in an area can destroy soil fertility as the organic matter in the soil is not replenished.
ii. It also affects various microorganisms present in the soil which are beneficial for maintaining soil quality. Disrupting the nature of soil will hamper in the production of crop. Hence, fertilizers are considered good for only short-term use.