Q1. Compare the use of manure and fertilizers in maintaining soil fertility.
Manure is prepared by the decomposition of animal excreta and plant waste.
(i) The manures enrich the soil with nutrients like nitrogen and phosphorous.
(ii) The organic matter in manure helps in improving the soil structure.
Fertilizers are commercially produced plant nutrients. Fertilizers should be used in proper dose and time.
(i) Fertilizers supply nitrogen, phosphorus and potassium to the soil.
(ii) Fertilisers do not replenish the organic matter in the soil and hence continuous use of fertilizers in an area can destroy soil fertility.