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dc.contributor.authorARAÚJO, C. de A.
dc.contributor.authorARAUJO, G. G. L. de
dc.contributor.authorSIGNOR, D.
dc.contributor.authorSANTOS, A. P. G.
dc.contributor.authorMORAES, S. A. de
dc.contributor.authorSILVA, T. G. F. da
dc.contributor.authorLIMA, D. O.
dc.contributor.authorRESENDE, A. M. D.
dc.contributor.authorGOIS, G. C.
dc.contributor.authorVOLTOLINI, T. V.
dc.date.accessioned2026-06-16T13:54:49Z-
dc.date.available2026-06-16T13:54:49Z-
dc.date.created2026-06-16
dc.date.issued2026
dc.identifier.citationNitrogen, v. 7, 61, 2026.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1187604-
dc.descriptionUnderstanding nitrogen dynamics in arid agricultural systems is essential for mitigating greenhouse gas (GHG) emissions in climate-constrained environments. This study evalu- ated the effects of planting density, organic fertilization, and saline water irrigation on soil chemical properties, carbon and nitrogen stocks, and emissions of CO2, CH4, and nitrous oxide (N2O) in cactus pear cultivation systems. A 2 × 2 × 2 factorial arrangement was used to test two planting densities (30,000 and 75,000 plants ha−1 ), two organic fertilizer rates (0 and 30 Mg ha−1 ), and two saline irrigation depths (0 and 25% of ET0). Higher planting density increased soil moisture and carbon content while reducing CO2 and CH4 emissions. Organic fertilization increased the soil C ratio and phosphorus availability and significantly enhanced N2O emissions, whereas unfertilized systems showed negative N2O fluxes. Saline water irrigation reduced N2O emissions, resulting in negative fluxes (−12.50 μg N m−2 h −1 ), indicating potential suppression of nitrification and denitrifica- tion pathways. None of the evaluated factors significantly affected soil nitrogen stocks. Total GHG emissions (CO2-eq) were lower in denser cultivation systems. These results demonstrate that the interaction among high planting density, organic fertilization, and supplementary saline irrigation modulates nitrogen transformations and N2O emissions in semi-arid soils, highlighting management strategies to mitigate nitrogen-derived GHG emissions in cactus-based agroecosystems.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectAgricultura biossalina
dc.subjectEstoque de carbono
dc.subjectÓxido nitroso
dc.subjectBiosaline agriculture
dc.subjectSistemas agrícolas
dc.subjectAdubacao organica
dc.subjectCO2
dc.subjectCH4
dc.subjectEmissão de gases de efeito estufa
dc.subjectFigo da índia
dc.titleAre greenhouse gas emissions and soil chemical characteristics affected by planting density, organic fertilization, and saline water irrigation in cactus pear cultivation?
dc.typeArtigo de periódico
dc.subject.thesagroSolo
dc.subject.thesagroÁgua Salina
dc.subject.thesagroMetano
dc.subject.thesagroEfeito Estufa
dc.subject.thesagroIrrigação
dc.subject.nalthesaurusMethane
dc.subject.nalthesaurusNitrous oxide
dc.subject.nalthesaurusGas emissions
dc.subject.nalthesaurusSoil chemical properties
dc.subject.nalthesaurusSaline water
dc.subject.nalthesaurusCactus pears
riaa.ainfo.id1187604
riaa.ainfo.lastupdate2026-06-16
dc.identifier.doihttps://doi.org/10.3390/nitrogen7020061
dc.contributor.institutionCLEYTON DE ALMEIDA ARAÚJO, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO; GHERMAN GARCIA LEAL DE ARAUJO, CPATSA; DIANA SIGNOR DEON, CPATSA; ANA PAULA GUIMARÃES SANTOS; SALETE ALVES DE MORAES, CPATSA; THIERES GEORGE FREIRE DA SILVA, UNIVERSIDADE FEDERAL RURAL DE PERNAMBUCO; DENESON OLIVEIRA LIMA, DEPARTMENT, UNIVERSIDADE ESTADUAL DE ALAGOAS; ALIDA MAYSA DANTAS RESENDE, UNIVERSIDADE DE PERNAMBUCO; GLAYCIANE COSTA GOIS, UNIVERSIDADE FEDERAL DO MARANHÃO; TADEU VINHAS VOLTOLINI, CPATSA.
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