Related topics: nitrogen

When yesterday's agriculture feeds today's water pollution

A study led by researchers at Université de Montréal quantifies for the first time the maximum amount of nutrients—specifically, phosphorus—that can accumulate in a watershed before additional pollution is discharged ...

Rethinking the value of sewage sludge 

Researchers from the Plant Nutrition Group at ETH Zurich have been evaluating methods to develop an efficient and environmental friendly phosphate fertilizer from sewage sludge ashes. A new thermo-chemical process that extracts ...

New study suggests wildlife may be answer to phosphorus crisis

Modern agriculture is underpinned by a steady supply of fertilizer. However, one of the main ingredients of fertilizer, phosphorus, is running out, putting pressure and financial strain on farmers throughout the world. Now, ...

Soil phosphorus availability and lime: More than just pH?

Plants can't do without phosphorus. But there is often a 'withdrawal limit' on how much phosphorus they can get from the soil. That's because phosphorus in soils is often in forms that plants can't take up. That affects how ...

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