Nitrogen dynamics following slurry injection in maize: soil mineral nitrogen

DC FieldValueLanguage
dc.contributor.authorWesterschulte, Matthias
dc.contributor.authorFederolf, Carl-Philipp
dc.contributor.authorTrautz, Dieter
dc.contributor.authorBroll, Gabriele
dc.contributor.authorOlfs, Hans-Werner
dc.date.accessioned2021-12-23T16:05:32Z-
dc.date.available2021-12-23T16:05:32Z-
dc.date.issued2017
dc.identifier.issn13851314
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/7057-
dc.description.abstractIn northwestern Germany slurry injection below maize (Zea mays L.) seeds is gaining increasing interest of farmers, because of the expected enhanced nitrogen (N) and phosphorus (P) use efficiencies compared to the usual fertilizing practice. The present study aims to compare the spatial and temporal soil mineral nitrogen (SMN) dynamics for these fertilizing strategies. Field trials with four treatments (unfertilized control, broadcast application N P mineral starter fertilizer (+MSF), injection and injection nitrification inhibitor (NI)) were conducted using pig slurry on sandy soil in 2014 and 2015. Soil samples were taken from three soil layers at 30 cm intervals down to 90 cm, and at three positions (below the maize row, 15 and 30 cm distance to the row) at several dates over the growing season. Soil monoliths (15 x 15 x 10 cm) were sampled around the injection zone, and for all other soil zones an auger was used. In 2014 due to heavy rainfall all fertilized N was displaced from the top soil layer of the broadcast treatment until 6-leaf stage, while N displacement was significantly smaller after slurry injection (about 20 kg SMN ha(-1) more in top layer). The lateral movement of injected slurry N was negligible. In 2015 almost no displacement of fertilized N out of the top soil layer occurred independently of treatments, because of lower rainfall. The release of slurry N was delayed following broadcast application and large SMN concentrations were detected in the injection zones until 10-leaf stage. The addition of a NI resulted in significantly increased ammonium N concentrations in the injection zone throughout the early growth stages [+46 % (2014) and 12 % (2015) at 6-leaf stage]. Thus, N displacement was delayed in 2014 and in 2015 at 6-leaf stage increased SMN concentrations (+1/3 with NI) were found around the slurry band. Due to slurry injection, especially when combined with a nitrification inhibitor, the applied nitrogen is located in a soil zone with better spatial availability for plant roots compared to broadcast application and the risk of nitrate leaching is significantly reduced.
dc.description.sponsorshipGerman Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt); EuroChem Agro GmbH, Mannheim; We are grateful to the German Federal Environmental Foundation (Deutsche Bundesstiftung Umwelt) for financing the project ``Optimizing the nitrogen and phosphate use efficiencies from liquid manure by slurry injection to reduce environmental pollution''. EuroChem Agro GmbH, Mannheim, thankfully granted additional support. We thank our students, scientific assistants and the laboratory staff, who did magnificent work. Furthermore, we acknowledge Herbert Pralle and Hans-Georg Schon for their assistance with the statistical analysis, as well as Chris Bauer (Department of Biology, Drexel University, Philadelphia, USA) for language corrections.
dc.language.isoen
dc.publisherSPRINGER
dc.relation.ispartofNUTRIENT CYCLING IN AGROECOSYSTEMS
dc.subjectAgriculture
dc.subjectBEEF MANURE
dc.subjectCATTLE SLURRY
dc.subjectIMMOBILIZATION
dc.subjectLiquid manure
dc.subjectLIQUID SWINE MANURE
dc.subjectLOSSES
dc.subjectNitrate leaching
dc.subjectNITRIFICATION INHIBITOR
dc.subjectNitrogen displacement
dc.subjectPIG SLURRY
dc.subjectSILAGE MAIZE
dc.subjectSoil Science
dc.subjectSpatial nitrogen distribution
dc.subjectSURFACE APPLICATION
dc.subjectTRANSFORMATIONS
dc.titleNitrogen dynamics following slurry injection in maize: soil mineral nitrogen
dc.typejournal article
dc.identifier.doi10.1007/s10705-016-9799-5
dc.identifier.isiISI:000392500700001
dc.description.volume107
dc.description.issue1
dc.description.startpage1
dc.description.endpage17
dc.identifier.eissn15730867
dc.publisher.placeVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
dcterms.isPartOf.abbreviationNutr. Cycl. Agroecosyst.
crisitem.author.netidBrGa772-
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