Biological nitrogen (N2) fixation is the reduction of atmospheric nitrogen gas to ammonia, according to the equation: N2+ 10H+ 8 e- 16ATP +2NH4+ + H2 + 16ADP + 16Pi The reaction is mediated by an oxygen-sensitive enzyme nitrogenase and requires energy,...

Under ordinary conditions, nitrogen does not react with other elements, so one might not expect to find its compounds in nature, at least not extensively. Yet nitrogen compounds are present in every living cell, and they can be found in all fertile...

Nitrogen fixation is the biological process by which atmospheric nitrogen gas (N2) is converted into ammonia (NH3). Nitrogen is an essential nutrient for the growth of all organisms, as it is a component of proteins, nucleic acids, amino acids, and...

The process whereby bacteria living in the soil or in the roots of certain plants (such as clover) convert the free nitrogen in the atmosphere into ammonia (NH3) and subsequently into more complex nitrogen compounds. These latter can then be used by...

Nitrogen fixation is the process by which nitrogen is taken from its natural, relatively inert molecular form (N2) in the atmosphere and converted into nitrogen compounds (such as, notably, ammonia, nitrate and nitrogen dioxide)[1] useful for other...

Research conducted by USDA-ARS soil scientist Michael P. Russelle begins to explain how alfalfa transfers nitrogen to agricultural soil to enhance soil fertility for successive crops planted in that soil. A miniature video camera enables scientists to view alfalfa root mazes through clear plastic...

The ability of soybeans to fix nitrogen can be augmented, resulting in increased yield. Soybeans are legumes and are able to "fix" [N.sub.2] gas from the atmosphere into forms of N that the plant can use. In fact, soybeans are so good...