the conversion of atmospheric nitrogen into the compounds by natural processes, such as lightning, and 4) biological nitrogen fixation (Vance 2001). The reduction of atmospheric nitrogen is a ...

Although nitrogen is very abundant in the atmosphere, it is largely inaccessible ... The major transformations of nitrogen are nitrogen fixation, nitrification, denitrification, anammox, and ...

Just like today, early life on Earth was therefore dependent on nitrogen fixation by microbes. In other words, on their conversion of atmospheric nitrogen into nitrogen compounds that living ...

Until recently only a few microorganisms were thought to fix the nitrogen of the atmosphere in the form essential to higher plant and animal life. Now a number of others have been found ...

Most organisms require nitrogen to produce biological molecules, such as nucleotides and amino acids, but until recently, only prokaryotes were known to fix nitrogen from the atmosphere ... and for ...

The nitrogen-15 isotopic technique is also used to quantify the amount of nitrogen fixed from the atmosphere through biological nitrogen fixation by leguminous crops. The carbon-13 isotope signature ...

Research into bacteria strains that are both competitive and efficient in nitrogen fixation and developing plants with those ...

Treating the new soybean crop with an inoculant every year is vital before putting the seed into the soil in North Dakota and ...