Dictionary » N » Nitrogen



(Science: chemistry) A colourless nonmetallic element, tasteless and odorless, comprising four fifths of the atmosphere by volume. It is chemically very inert in the free state, and as such is incapable of supporting life (hence the name azote still used by french chemists); but it forms many important compounds, as ammonia, nitric acid, the cyanides, etc, and is a constituent of all organised living tissues, animal or vegetable. Symbol N. Atomic weight 14. It was formerly regarded as a permanent noncondensible gas, but was liquefied in 1877 by Cailletet of paris, and Pictet of geneva.

Origin: L. Nitrum natron _ -gen: cf. F. Nitrogene. See Niter.

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Re: [Research request] Rooting Response in cuttings

'm doing a research regarding rooting response in mung bean as influenced by nitrogen and phosphorus.. I found the title above in the references of a paper, and when I googled for it I found it also in references of other papers just like that .. So, I posted ...

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by juston33
Thu Mar 26, 2015 7:05 am
Forum: Botany Discussion
Topic: [Research request] Rooting Response in cuttings
Replies: 6
Views: 4139

Is there any difference between different fertilizers?

Organic and chemical fertilizer ultimately providing the same elements i.e. nitrogen, potassium, phosphorus and other macro and micro nutrients to the plants. There is no difference in atomic structure of elements from both sources. For example, whether nitrogen ...

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by josem
Mon Aug 04, 2014 3:49 pm
Forum: Physiology
Topic: Is there any difference between different fertilizers?
Replies: 1
Views: 2314

Agriculture and Microbiology come together (Research Prjct)

... have enough of it, it will keep your Ph at a good steady level. And I also read that these bacteria are needed in order for the plant to even use nitrogen, and thy don't work at a Ph below 7. So they make a layer of slime that allows them to work if their are enough of them. So they could also ...

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by Sophiahotep
Thu Nov 14, 2013 9:29 pm
Forum: Microbiology
Topic: Agriculture and Microbiology come together (Research Prjct)
Replies: 2
Views: 5819

Bacterial Taxonomy

... disk-shaped cyanobacteria may form filamentous structures with reproductive spores, but the presence of heterocysts or the ability to reduce nitrogen gas to ammonia is unique to Cyanobacteria. Proteobacteria are very, very diverse and better discussed in terms of the individual classes alpha, ...

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by wildfunguy
Sat Oct 19, 2013 6:12 pm
Forum: Microbiology
Topic: Bacterial Taxonomy
Replies: 3
Views: 7197

Re: Are carbohydrates hydrophobic?

... and oxygen (CH2O), these elements, always along with the oxygen, tend to be polar in their bonds: "You should remember that oxygen and nitrogen have relatively high affinities for electrons, and therefore oxygen-carbon and oxygen- hydrogen bonds as well as nitrogen-hydrogen bonds are ...

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by HectorEnriquezC
Fri Aug 30, 2013 1:36 am
Forum: Molecular Biology
Topic: Are carbohydrates hydrophobic?
Replies: 7
Views: 20728
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