What are the special properties of manures over artificial fertilizers?
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Solution
1. Artificial fertilizers gradually degrade the soil quality whereas organic manure improves soil quality and promote crop growth.
2. Organic manure provides nutrients that are important for the growth of plants. They act slower and are gentler as compared to artificial fertilizers.
3. Manures help in the improvement of nutrient content of soil and soil structure. On the other hand, artificial fertilizers add a water-soluble chemical to the soil. Either the plant roots absorb these chemicals or the chemical leach away causing pollution of water resources.
4. In the case of organic manure, the nutrient is not present in the ready-to-use form. When manure is added to soil, the microorganism present in the soil, work in the is to break it up and release the manure's nutrients. This process is quite slow and eliminates the risk of plants roots absorbing too much of the nutrients which happen in the case of artificial fertilizers.