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dc.contributor.authorMaris, S.C.
dc.contributor.authorBosch Serra, Àngela D.
dc.contributor.authorTeira Esmatges, Maria Rosa
dc.contributor.authorDomingo Olivé, Francesc
dc.contributor.authorGonzález Llinàs, Elena
dc.description.abstractAim of study: Agricultural activities are the main source of volatilized ammonia (NH3). Maximum rates are reached within a few hours after slurry application. This study aimed to evaluate the influence of soil texture, tillage and slurry dry matter (DM) on NH3 volatilization. Area of study: Mediterranean semiarid environments (NE Spain). Material and methods: Ammonia volatilization from pig slurry directly applied on the soil surface was quantified in the laboratory, in soil samples from two experimental sites with different soil textures: silty loam and sandy loam. Field treatments consisted of two tillage management practices: till by disc-harrowing or no-till. At topdressing (cereal tillering), tillage treatments were combined with slurries of different DM contents applied onto the silty loam soil. Measurements were done for two cereal cropping seasons and during the period of maximum NH3 flux (12 h after slurry application). A photoacoustic analyzer was used. Main results: Slurry spreading at sowing resulted in low volatilization (0.7-9% of NH4+-N applied) as it also did at topdressing (0.3-1.4% of NH4+-N applied). At sowing, ammonia volatilization from high DM slurry (>7.5%) was significantly enhanced by no-till in both soils. At topdressing, this result was also found in records on silty loam soil. No differences were found between tillage systems when slurry of low DM content was applied, whatever the soil texture and application moment. Although NH3 volatilization was probably affected by the laboratory conditions, the comparisons between treatments were still valuable. Research highlights: Ammonia volatilization abatement can be improved (<1 kg NH3-N ha-1) if fertilization is done after crop establishment using low DM slurries (<3.5%).
dc.description.sponsorshipFunding agencies/institutions: National Institute for Agricultural and Food Scientific Research and Technology (INIA), Spain. Project / Grant: RTA2013-57-C5-5; RTA2017-88-C3-3
dc.publisherInstituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)
dc.relation.isformatofReproducció del document publicat a:
dc.relation.ispartofSpanish Journal Of Agricultural Research, 2020, vol. 18, num. 2, p. e11SC01
dc.rightscc-by (c) Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2020
dc.subjectCalcareous soils
dc.subjectMediterranean agricultural systems
dc.subjectSoil texture
dc.subjectWinter cereals
dc.titleLaboratory assessment of ammonia volatilization from pig slurries applied on intact soil cores from till and no-till plots

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cc-by (c) Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2020
Except where otherwise noted, this item's license is described as cc-by (c) Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), 2020