D

Agriculture

11 viewed last edited 1 year ago
Omkar Balaji
1
Differentiate between fertilizers and manures
Krishna
1
Manure Fertilizer: 1) Manure is a natural or an organic substance obtained by the decomposition of plant and animal wastes. This is done by microbes, earthworms, fungus etc. 2) Low percentage of nutrients is present. 3) Manure provides a lot of organic matter to the soil. It is slowly absorbed by the plants. 4) Crop productivity is increased only to some certain extent. 5) No side effects of manure are absorbed. Example: Excrete of animals, Animal matter(blood, flesh, bones, and horn), Farmyard manure, Green manure etc. Fertilizer: 1) Fertilizer is a synthetic substance or an inorganic compound. 2) High percentage of nutrients is present. 3) Fertilizer does not provide any humus to the soil. It is quickly absorbed by the plants. 4) Crop productivity is increased many folds by its use. 5) Chemicals in fertilisers are washed away to the nearby water bodies, causing soil and water pollution. Example: Urea, NH3SO4, Superphoshpate, Advantages of artificial fertilizers: 1) Nutrient-specific 2) Have plant nutrients in concentrated form 3) Provide quick replenishment of plant nutrients in soil 4) Highly soluble in water 5) Easily absorbed by plants 6) Easy to store, transport and handle Disadvantages of excessive use artificial fertilizers: 1) Reduce the fertility of soil 2) Change the chemical nature of soil 3) May cause water pollution through runoff