nitrogen fixation


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nitrogen fixation

n.
1. The conversion of atmospheric nitrogen into compounds, such as ammonia, by natural agencies or various industrial processes.
2. The conversion by certain soil microorganisms, such as rhizobia, of atmospheric nitrogen into compounds that plants and other organisms can assimilate.

ni′tro·gen-fix′er (-fĭk′sər) n.
ni′tro·gen-fix′ing adj.

nitrogen fixation

n
1. (Biology) the conversion of atmospheric nitrogen into nitrogen compounds by certain bacteria, such as Rhizobium in the root nodules of legumes
2. (Chemistry) a process, such as the Haber process, in which atmospheric nitrogen is converted into a nitrogen compound, used esp for the manufacture of fertilizer
ˈnitrogen-ˌfixing adj

ni′trogen fixa`tion


n.
1. any process of combining atmospheric nitrogen with other elements, as used in the preparation of fertilizers and industrial products.
2. this process as performed by bacteria found in the nodules of leguminous plants, thereby making nitrogenous compounds available to the host plants.
[1890–95]

nitrogen fixation

The process by which free nitrogen from the air is combined with other elements to form organic compounds that plants can use as nutrients. Cyanobacteria and certain other forms of bacteria, especially those that live in the roots of legumes, convert gaseous nitrogen into organic compounds.

nitrogen fixation

The conversion of nitrogen gas to nitrates by some bacteria.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nitrogen fixation - the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacterianitrogen fixation - the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria
biological process, organic process - a process occurring in living organisms
References in periodicals archive ?
ISLAMABAD -- A study into the significance of the plant microbiomes has found the first direct evidence that nitrogen fixation can occur in the branches of trees with no root nodule required.
Nitrogen fixation process tested in microgravity environment
Bayer and Ginkgo Bioworks create a new company focused on technologies to improve plant-associated microbes with a major focus on nitrogen fixation.
There is much less research on the economics of nitrogen fixation from legumes than there is on the economics of nitrogen fertiliser.
Trichodesmium is a type of cyanobacteria that does something called nitrogen fixation - it uses nitrogen gas to make ammonia and other byproducts that certain marine life rely on to survive.
The inoculation of the common bean with a recommended rhizobium strain in combination with the application of Mo contributed to improving biological nitrogen fixation and grain dry weight in two common bean cultivars.
Being, a leguminous crop, black gram fulfills major part of nitrogen requirement by symbiotic nitrogen fixation with the help of bacterium called Rhizobia (Pareek, 1978).
Rhizobia are recognized for their talent to carry out symbiotic nitrogen fixation by creating nodules on the roots of legumes.
For nitrogen fixation and nutrient solubilization, PGPR and PSB are projected to become an important part of biostimulant formulations.
The increase in cultivation of leguminous pulses and oilseeds will also have additional environmental benefits as these crops are less water consuming and help in nitrogen fixation in the soil.
It is an attempt to increase nitrogen fixation and the yield at all the sites of harsh climate.