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Nanoparticles show promise as fertilizer

Sept. 2, 2015--Researchers at UD have discovered unique behaviors of hydroxyapatite nanoparticles (HANPs) that show promise as a phosphorus nanofertilizer and could be used to help slow the release of phosphorous in soils.

This would both increase phosphorous uptake efficiencies in the growing of plants and also in protecting environmentally sensitive sites, including bodies of water, by reducing nutrient loading, which is important because phosphorous is a nonrenewable resource and an essential nutrient for agricultural production.

Funded by the United States Department of Agriculture (USDA), the research was conducted by Dengjun Wang, a postdoctoral researcher in the Department of Plant and Soil Sciences in UD’s College of Agriculture and Natural Resources; Yan Jin, professor of plant and soil sciences with a joint appointment in the Department of Civil and Environmental Engineering; and Deb Jaisi, assistant professor of plant and soil sciences with a joint appointment in the Department of Geological Sciences.

The HANPs are known as a strong sorbent for contaminants such as heavy metals and radionuclides and are already being used to remediate soils, sediments and ground waters. However, its potential as a better phosphorous fertilizer in agriculture has just started to be fully explored, the researchers said.

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