Organic wastes as alternative sources of phosphorus for plant nutrition in a calcareous soil
Waste Management（2019）
Abstract
•Three anaerobic digestates (ADs) and two animal effluents were studied via SCE.•These were compared for soil P release and ryegrass P uptake in pot.•AD (bovine slurry + energy crops) and swine slurry were alternative to chemical P.•31P NMR revealed that PO−4 was the main factor in their P fertilization capacity.•SCE can be helpful to assess potentially available P from ADs and animal slurries.
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Key words
Ryegrass,X-ray diffraction,31P NMR,Sequential chemical extraction
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