Organic manures

• Organic manures are plant and animal product (waste) that are used as source of plant nutrient.
• Organic manures are obtained from the decomposition of organic materials. Organic materials are the byproducts of farming and allied industries derived from plants and animals sources.

Organic manures are classified into two groups

• Bulky organic manures are bulky in nature, high in volume but less quantity of plant nutrients.
• Concentrated organic manures contain higher percentage of essential plant nutrients with low volume.

Effects of organic manures on soils

➢ These manures contain essential plant nutrients (macro and micronutrients). They have a direct effect on plant growth like any other commercial fertilizers.

➢ Organic manures increase OM content of the soil hence improves the physical properties of soils.

➢ Organic manures provide food for microorganism of soils. So, activity of microorganisms increased which enhances the processes which convert unavailable plant nutrients into available form.

➢ Organic manures increases the humus content of the soil. Biochemical processes are increased. So, chemical properties are increased.

Significance of organic manures

• Produce quality foods that advance human health.
• Be economically & spiritually beneficial to both producers & consumers.
• Be sustainable and easily practiced by anyone.
• Respect nature and preserve the environment.
• Produce enough food for an increasing population.
• Maintain soil health