Nitrous oxide emissions and denitrification N-losses from agricultural soils in the Bornhöved Lake region: influence of organic fertilizers and land-use

N2O fluxes in soils of contrasting textures fertilized with liquid and solid dairy cattle manures

“…Presumably the simultaneous application of readily nitrifiable N and available C (Table 2) and emission because infiltration of manure C and N in soil as well as ammonia volatilization losses differed between manure types. Mogge et al (1999) reported higher emissions from soil with a long history (30 yr) of repeated application of solid than liquid manure and concluded that nitrification was the major contributor to N 2 O production. This is in agreement with the more sustained effect of solid than liquid manure on N 2 O production (Tenuta et al 2000).…”

“…However, N 2 O emissions from liquid manures incubated in the laboratory were either lower (Loro et al 1997;Tenuta et al 2000) or higher (Paul et al 1993) than from solid manures. Available studies under field conditions also report contrasting results with greater emissions from solid (Chadwick et al 2000) or liquid manure (Mogge et al 1999). More studies are needed to improve our understanding of the impacts of manure type on N 2 O emissions under field conditions.…”

“…Nitrification potential was shown to be greater in soils under organic than under conventional farming (Laanbroek and Gerards 1991). Available C is a substrate for denitrification and the reaction is usually more stimulated by the addition of organic amendments than by synthetic N (Loro et al 1997;Mogge et al 1999;Tenuta et al 2000;Dambreville et al 2006). Accordingly, several direct field comparison studies reported greater soil-surface N 2 O emissions following the application of animal manure than synthetic fertilizer N (Petersen 1999;Rochette et al 2000;Barton and Schipper 2001;Akiyama and Tsuruta 2003;van Groenigen et al 2004).…”

Assessment of various practices of the mitigation of N2O emissions from the arable soils of Poland

“…Tymczasem Goliñski et al (2000) podaje, ¿e w Polsce znajduje siê tylko ok. 10% gleb podatnych na denitryfikacjê. W glebach lekkich o sk³adzie mechanicznym zapewniaj¹cym dobre warunki drena¿u denitryfikacja wystêpuje tylko okazjonalnie (Mogge et al 1999). Natomiast blisko 56% powierzchni u¿yt-ków rolnych w Polsce stanowi¹ piaszczyste gleby przepuszczalne (Krasowicz et al 2011).…”

“…Mo¿na to t³umaczyae pe³n¹ denitryfikacj¹ N-NO 3 -do N 2 kosztem produkcji N 2 O. Wzrost emisji tlenku diazotu z gleby w wyniku nawo¿enia naturalnego wystêpuje bowiem wtedy, gdy równoczeoenie zwiêksza siê zawartooeae obu substratów denitryfikacji: N-NO 3 -i biodegradowalnego C organicznego (Velthof et al 2003). Dlatego znaczny wzrost emisji N 2 O z gleby obserwowany jest w warunkach stosowania p³ynnych nawozów naturalnych, takich jak gnojowica (Mogge et al 1999), zawieraj¹cych znaczne ilooeci mineralnych form azotu i prostych zwi¹zków wêgla. Wyniki badañ prowadzonych na wieloletnim eksperymencie nawozowym w Skierniewicach wykaza³y podobn¹ emisjê N 2 O z gleb corocznie nawo¿onych saletr¹ amonow¹ i obornikiem, z którymi stosowano podobn¹ ilooeae azotu (Sosulski et al 2014).…”