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Author Topic: Does plants grow where there's Nitrogen?  (Read 2142 times)

Offline Salado

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Does plants grow where there's Nitrogen?
« on: 04/11/2012 19:26:28 »
I heard that somewhere and i wonder if it's true and why.


 

Offline CliffordK

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Re: Does plants grow where there's Nitrogen?
« Reply #1 on: 04/11/2012 20:26:02 »
Of course, there is a lot of nitrogen in the air of the form N2.  However, few plants can use this nitrogen directly.  The plants require reduced nitrogen in the form of NH3, NH4+, (NH2)2C=O (Urea), and etc.

Most of the amino acids (protein building blocks) contain nitrogen.  In order for the plants to grow, and produce the proteins, they must absorb nitrogen.

And, thus, in the USA, we use over 10 billion tons of nitrogen on our crops every year.
 

Offline Salado

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Re: Does plants grow where there's Nitrogen?
« Reply #2 on: 05/11/2012 07:39:11 »
Does that mean that plants can grow where ever there's corpses of animals?
 

Offline CliffordK

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Re: Does plants grow where there's Nitrogen?
« Reply #3 on: 05/11/2012 09:37:18 »
All living things have proteins.  Plants, Animals, Bacteria, etc.  And, thus also nitrogen, and other nutrients.  Animals, and muscle is high in protein, but certainly not the only protein source.  However, generally the plants can make their own amino acids, and thus would not be dependent on essential amino acids like humans.

Likely the plants would be better off as a carcass decomposes.  However, there are stories that some American Indians had used fish (whole fish?  or perhaps entrails) as fertilizer for their crops.

Some plants including legumes have nitrogen fixing bacteria on their roots, and can absorb most or all of their nitrogen from the atmosphere.
 

Offline Bored chemist

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Offline Lab Rat

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Re: Does plants grow where there's Nitrogen?
« Reply #5 on: 05/03/2013 14:24:04 »
Plants rely quite a bit on bacteria and other organisms that will break things down in the soil around their roots into a form of nitrogen they can absorb and use.
 

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Re: Does plants grow where there's Nitrogen?
« Reply #5 on: 05/03/2013 14:24:04 »

 

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