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Phosphorus availability of sewage sludge‐based fertilizers determined by the diffusive gradients in thin films (DGT) technique

Vogel, Christian ; Sekine, Ryo ; Steckenmesser, Daniel ; Lombi, Enzo ; Steffens, Diedrich ; Adam, Christian

Journal of plant nutrition and soil science, 2017-10, Vol.180 (5), p.594-601 [Periódico revisado por pares]

Weinheim: Wiley Subscription Services, Inc

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Título:
Phosphorus availability of sewage sludge‐based fertilizers determined by the diffusive gradients in thin films (DGT) technique
Autor: Vogel, Christian ; Sekine, Ryo ; Steckenmesser, Daniel ; Lombi, Enzo ; Steffens, Diedrich ; Adam, Christian
Assuntos: Agricultural practices ; Agrochemicals ; Ammonium ; Availability ; Chemical extraction ; chemical extraction tests ; Citric acid ; Corn ; Crop yield ; Cultivation ; Fertilizers ; Field tests ; Metals ; P recycling ; phosphate recovery ; Phosphorus ; plant growth experiments ; Sewage sludge ; Sludge ; Soil mixtures ; soil testing ; Soils ; Thin films ; Zea mays
É parte de: Journal of plant nutrition and soil science, 2017-10, Vol.180 (5), p.594-601
Descrição: The plant‐availability of phosphorus (P) in fertilizers and soil can strongly influence the yield of agricultural crops. However, there are no methods to efficiently and satisfactorily analyze the plant‐availability of P in sewage sludge‐based P fertilizers except by undertaking time‐consuming and complex pot or field experiments. We employed the diffusive gradients in thin films (DGT) technique to quantify the plant P availability of various types of P fertilizers with a novel focus on sewage sludge‐based P fertilizers. Mixtures of fertilizer and soil were incubated for 3 weeks at 60% water holding capacity. DGT devices were deployed at the beginning of the incubation and again after 1, 2, and 3 weeks. Two weeks of incubation were sufficient for the formation of plant‐available P in the fertilizer/soil mixtures. In a pot experiment, the DGT technique predicted maize (Zea mays L.) biomass yield and P uptake significantly more accurately than standard chemical extraction tests for P fertilizers (e.g., water, citric acid, and neutral ammonium citrate). Therefore, the DGT technique can be recommended as a reliable and robust method to screen the performance of different types of sewage sludge‐based P fertilizers for maize cultivation minimizing the need for time‐consuming and costly pot or field experiments.
Editor: Weinheim: Wiley Subscription Services, Inc
Idioma: Inglês;Alemão

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Phosphorus availability of sewage sludge‐based fertilizers determined by the diffusive gradients in thin films (DGT) technique

Vogel, Christian ; Sekine, Ryo ; Steckenmesser, Daniel ; Lombi, Enzo ; Steffens, Diedrich ; Adam, Christian

Weinheim: Wiley Subscription Services, Inc

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