The phrase "artificial nitrogen" is correct and usable in written English.
It can be used in contexts related to agriculture, chemistry, or environmental science, particularly when discussing nitrogen compounds that are synthetically produced.
Example: "Farmers often use artificial nitrogen to enhance soil fertility and boost crop yields."
Alternatives: "synthetic nitrogen" or "man-made nitrogen".
"Before artificial nitrogen fertilizer became widely available, the world's population was around 2 billion," Weisman observes.
Some other crucial factors have not been considered, such as the increasing scarcity of oil and in particular natural gas, currently used to manufacture artificial Nitrogen fertiliser.
In addition, the spent material from the plant will be used as fertiliser, saving on the cost of artificial nitrogen for Wyke and neighbouring farms.
It has three 4,600m3 anaerobic digesters and the organic fertiliser they produce saves local farmers more than £100k in artificial nitrogen.
Although farms have changed the world for millennia, the Anthropocene advent of fossil fuels, scientific breeding and, most of all, artificial nitrogen fertiliser has vastly increased agriculture's power.
Almost 90% of the greenhouse gas emissions from farming come from nitrous oxide and methane, mainly from the use of artificial nitrogen fertiliser (N2O) needed to grow non-organic crops, and from the waste (particularly slurry) and burping from cows and sheep (methane).
Now, artificial sources of nitrogen, mostly from fertilizer, add more to the planet's nitrogen cycle than natural sources, contributing to global warming, ozone depletion and smog.
Some artificial aerosols containing iron, nitrogen and phosphorus are fertilizers that settle on the planet and stimulate plant growth on land and phytoplankton in the ocean.
To check for the potential effect of nutrient depletion on the survival of polyps, via nutrient limitation of symbionts, replicates were grown in artificial seawater without soluble nitrogen and phosphorous (treatment of absence of nutrients).
N. oculata was grown in artificial seawater supplemented with nitrogen and phosphorous under fluorescent lights that provided PAR of 40 μmol of photos/m/s to log phase.
The Haber-Bosch process, which produces ammonia in order to create nitrogen-based artificial fertilizer, is used to produce 100 million metric tons of fertilizer for feed crops annually (Steinfeld et al. 2006).
