Respuesta :
The Phosphorus and nitrogen are mostly used as fertilizers for the replenishment of soil. Their combination is used for better crop productivity or yield.
What is phosphorous cycle?
The change and movement of phosphorus in soil, water, and both living and dead organic material are described by the biogeochemical cycle known as the phosphorus cycle.
What is nitrogen cycle?
The nitrogen cycle is a series of repetitive processes that include the movement of nitrogen through both living and non-living organisms, including bacteria, plants, animals, the atmosphere, soil, and water. Nitrogen must change forms in order to progress through the various stages of the cycle.
The nitrogen cycle and the phosphorus cycle, both play in important role in maintaining the ecosystem. Nitrogen is important for all living organisms, for plants, animals and humans too. 78% of our atmosphere consists of nitrogen. Nitrogen cycle is the process in which atmospheric nitrogen is fixated , utilized by organisms and then recycled back into the atmosphere.
- Nitrogen atom is first of all broken apart by the rhizobium bacteria, found in thre root nodules of legumes.
- It converts the atmospheric nitrogen into ammonia which becomes ammonium upon getting mixed with water and is then utilised by the plants.
- These plants are then consumed by the animals. When these animals die, their dead matter is is decomposed in the form of ammonia.
- This ammonia is then utilised by plants through Nitrification with the help of Nitrifying bacteria.
- Later the bacteria releases a variety of nitrogen gases by a process known as Denitrification.
Phosphorus occurs in nature as part of a Phosphate ion. They are found mostly in ocean sediments, rocks.
- The Phosphate in rocks is transferred to the soil through weathering.
- Phosphate is then taken up by plants through roots
- These plants are then consumed by the animals.
- When these animals die, Phosphorus is again returned to the soil.
- From soil, it gets transferred to oceans in the form of phosphorus sediments.
- The amount of phosphorus is due to the excretion and death of aquatic plants and animals.
- It again returns back to rocks when Phosphate sediments from oceans are absorbed.
- The only difference in both cycles being that phosphorus is not cycled through atmosphere whereas nitrogen is.
Phosphorus and nitrogen are mostly used as fertilizers for the replenishment of soil. Their combination is used for better crop productivity or yield.
Availability of these nutrients ensures proper growth in plants. After the consumption by animals, in the bodies of animals nitrogen acts as an important protein synthesizer. Phosphorus is responsible for formation of teeth, bones, and repair of cell tissues. Thereby, all these benefits of these nutrients make them extremely important for the life forms.
Therefore, Phosphorus and nitrogen are mostly used as fertilizers for the replenishment of soil. Their combination is used for better crop productivity or yield.
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