Location: Soil Management and Sugarbeet ResearchTitle: Addressing conservation practice limitations and trade-offs for reducing phosphorus loss from agricultural fields
|OSMOND, DEANNA - North Carolina State University|
|CHRISTIANSON, LAURA - University Of Illinois|
|FLATEN, DON - University Of Manitoba|
|IPPOLITO, JIM - Colorado State University|
|JARVIE, HELEN - University Of Waterloo|
|KAYE, JASON - Pennsylvania State University|
|MCGRATH, JOSHUA - University Of Kentucky|
|NELSON, NATHAN - Kansas State University|
|SHOBER, AMY - University Of Delaware|
|STAVER, KENNETH - University Of Maryland|
|SHARPLEY, ANDREW - University Of Arkansas|
Submitted to: Agricultural and Environmental Letters
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 6/22/2022
Publication Date: 7/30/2022
Citation: Kleinman, P.J., Osmond, D.L., Christianson, L.E., Flaten, D.N., Ippolito, J.A., Jarvie, H.P., Kaye, J.P., King, K.W., Leytem, A.B., McGrath, J.M., Nelson, N.O., Shober, A.L., Smith, D.R., Staver, K.W., Sharpley, A.N. 2022. Addressing conservation practice limitations and trade-offs for reducing phosphorus loss from agricultural fields. Agricultural and Environmental Letters. 7(2). Article e20084. https://doi.org/10.1002/ael2.20084.
Interpretive Summary: Conservation practices have long been at the core of agricultural watershed programs to improve water quality. Not all conservation practices are equally effective in mitigating different water quality impacts, and some may actually pose trade-offs that undermine watershed outcomes. This review offers authoritative insight into the trade-offs posed by different conservation practices in mitigating phosphorus loss from agriculture.
Technical Abstract: Conservation practices that reduce nutrient and soil loss from agricultural lands to water are fundamental to watershed management programs. Avoiding tradeoffs of conservation practices is essential to the successful mitigation of watershed phosphorus (P) losses. We review documented tradeoffs associated with conservation practices, particularly those practices that are intended to control and trap P from agricultural sources. A regular theme is the trade-off between controlling P loss linked to sediment while increasing dissolved P losses (no-till, cover crops, vegetated buffers, constructed wetlands, sediment control basins). A variety of factors influence the degree to which these tradeoffs occur, complicated by their interaction and uncertainties associated with climate change. However, acknowledging these trade-offs and anticipating their contribution to watershed outcomes is essential to the sustainability of conservation systems.