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Phosphorus - its role and nature
Phosphorus (chemical symbol P) is an element necessary for life. Because phosphorus is highly reactive, it does not naturally occur
as a free element, but is instead bound up in phosphates. Phosphates typically occur in inorganic rocks.
As farmers and gardeners know, phosphorus is one of the three major nutrients required for plant growth: nitrogen (N), phosphorus (P) and potassium (K).
Fertilizers are labelled for the amount of N-P-K they contain.
Most phosphorus is obtained from mining phosphate rock. Crude phosphate is now used in organic farming, whereas chemically treated forms such
as superphosphate, triple superphosphate, or ammonium phosphates are used in non-organic farming.
The current major use of phosphate is in fertilizers. Growing crops remove it and other nutrients from the soil... Most of the world's farms do not have or
do not receive adequate amounts of phosphate. Feeding the world's increasing population will accelerate the rate of depletion of phosphate reserves.
and...
resources are limited, and phosphate is being dissipated. Future generations ultimately will face problems in obtaining enough to exist.
It is sobering to note that phosphorus is often a limiting nutrient in natural ecosystems. That is, the supply of available phosphorus limits the
size of the population possible in those ecosystems.
Intraday
3 month Candlestick with volume
3 month Bollinger Bands,RSI, S Stochastic and 50 days MA
Charts - 2 days
- 20 Jan 2012 08:20
- 731 of 754
- 20 Jan 2012 08:23
- 732 of 754
- 31 Jan 2012 08:36
- 738 of 754
- 13 Mar 2012 10:50
- 741 of 754
- 10 Oct 2012 08:37
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- 10 Oct 2012 09:58
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- 28 Feb 2013 17:05
- 749 of 754