Improvement in Food Resources

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Fertilizers are chemicals commercially produced in factories and used as plant nutrients. They supply Nitrogen, Phosphorous, Potassium, etc., They are used to ensure good vegetative growth giving rise to healthy plants.

Advantage: They help in good vegetative growth and produce healthy plants.

Disadvantage :

1. Excessive use of fertilizer leads to pollution of water.
2. Continuous use of fertilizer lead to decrease in soil fertility because organic matter of the soil cannot be replenished as microorganisms present in the soil get harmed due to fertilizer.

Fertilizers are chemicals commercially produced in factories and used as plant nutrients. They supply Nitrogen, Phosphorous, Potassium, etc., They are used to ensure good vegetative growth giving rise to healthy plants.

Advantage: They help in good vegetative growth and produce healthy plants.

Disadvantage :

1. Excessive use of fertilizer leads to pollution of water.
2. Continuous use of fertilizer lead to decrease in soil fertility because organic matter of the soil cannot be replenished as microorganisms present in the soil get harmed due to fertilizer.

Manure is an organic substance and is prepared by the decomposition of plant and animal wastes.

Advantages of Manure

1. Manures helps in enriching the soil with organic matter and nutrients.
2. It helps in increasing the soil fertility.
3. Water holding capacity of the soil is increased.
4. Helps in improving soil texture.
5. Save our environment from the excessive use of fertilizers.

Manure is classified into two types according to the biological material used:

Compost and vermi-compost

Composting: It is the process in which farm waste material (cow dung, domestic waste ,sewage waste etc) is decomposed in pits. Compost is the aerobically decomposed remnants of organic matter which is rich in nutrients.

Vermicomposting: It is the process which involve use of earthworms to hasten the process of decomposition of plant and animal refuse.

Green manure: Leguminous plants like Sunn-hemp or Cluster Bean are grown and then mulched by ploughing them back into the soil. This helps in enriching the soil with Nitrogen and Phosphorous.