Farmers apply nitrogen fertilizers to crops to boost yields, feeding more people and livestock. But when there’s more fertilizer than the crop can take up, some of the excess can be converted into gaseous forms, including nitrous oxide, a greenhouse gas that traps nearly 300 times as much heat in the atmosphere as carbon dioxide. About 70 percent of human-caused nitrous oxide comes from agricultural soils, so it’s vital to find ways to curb those emissions.
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Agricultural greenhouse-gas emissions studied
A gas analyzer measures carbon dioxide and nitrous oxide from fields.
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