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000256122 037__ $$aFZJ-2015-06131
000256122 041__ $$aEnglish
000256122 1001_ $$0P:(DE-Juel1)151189$$aRobles Aguilar, Ana Alejandra$$b0$$eCorresponding author$$ufzj
000256122 1112_ $$aRhizosphere 4$$cMaastricht$$d2015-06-21 - 2015-06-25$$wNetherlands
000256122 245__ $$aEffect of nitrogen form, pH and plant species in the mobilization and acquisition of P from a recycled phosphorus fertilizer
000256122 260__ $$c2015
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000256122 520__ $$aWorld phosphorus resources are limited. Therefore recycling of phosphorus from waste materials is important, and struvite (MgNH4PO46H2O) is a common precipitate recovered from waste water treatments or during anaerobic digestion of manure. Our approach is to evaluate how mobilization of phosphorus may differ when two different species (narrow–leaved Lupin and Maize) are grown in an acidic or alkaline sand with phosphorus added as either struvite or as superphosphate. Nitrogen was applied as ammonium or nitrate as an important factor that could affect phosphorus availability by changing soil pH. The parameters to evaluate the mobilization of phosphorus from struvite were phosphorus uptake, phosphorus present in the soil and comparison of plant performance within the different treatments. Lupines are capable of symbiotically fixing atmospheric nitrogen, as well as to release phosphate-mobilizing carboxylates. These two traits make lupines good candidates forstudying nutrient mobilization in the rhizosphere. In order to observe if citrate (mimicking root exudates) was able to make the P from the struvite more available compared with water, our study also included a flushing experiment with citrate in columns filled with two different sands of acidic and alkaline pH mixed with struvite. We predict that lupine growing on alkaline sand will have better access to phosphorus in struvite (than on acidic sand) due to its ability to acidify the rhizosphere via exudation of carboxylates. Thus we expect lupine to have higher biomass when growing on alkaline sand with an ammonium supply.
000256122 536__ $$0G:(DE-HGF)POF3-582$$a582 - Plant Science (POF3-582)$$cPOF3-582$$fPOF III$$x0
000256122 7001_ $$0P:(DE-Juel1)129409$$aTemperton, Vicky$$b1
000256122 7001_ $$0P:(DE-Juel1)129286$$aBlossfeld, Stephan$$b2$$ufzj
000256122 7001_ $$0P:(DE-Juel1)129475$$aJablonowski, Nicolai David$$b3$$ufzj
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000256122 9131_ $$0G:(DE-HGF)POF3-582$$1G:(DE-HGF)POF3-580$$2G:(DE-HGF)POF3-500$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bKey Technologies$$lKey Technologies for the Bioeconomy$$vPlant Science$$x0
000256122 9141_ $$y2015
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