We note that currently in Europe, nitrogen fertilizer inventories are at some of their lowest levels ever.

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Rather than rotating corn planting with soybeans to replace soil nitrogen, many farmers are planting corn year after year and adding large amounts of nitrogen fertilizer.

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Three-quarters of the company's sales are of nitrogen fertilizers, and it has a big position in domestic production, with two of the three largest nitrogen fertilizer plants in North America.

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Nitrogen fertilizer is one way.

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For much of the latter half of 2012, nitrogen-based fertilizer companies were great investments.

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The animals then converted the fish into a nitrogen-rich fertilizer for grapevines.

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Milesi, who uses satellite data to study the effects of urbanization, estimates Americans use as much as 19 trillion gallons of water and 2.4 million metric tons of nitrogen-based fertilizer annually to care for their lawns.

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Ammonium nitrate, a solid fertilizer composed of ammonia and nitrogen, is also a component of explosives widely used in mining.

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Researchers at Kansas State University are creating precise maps of nitrogen deficiencies in soil to help farmers apply fertilizer where it is needed most.

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Many crops that produce biofuels are legumes, they fix nitrogen in the soil -they are their own fertilizer factories.

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