Effect of soil tillage and N fertilization on N2O mitigation in maize in the Brazilian Cerrado

The management system of soils and nitrogen application can cause impacts on the N2O emissions produced by the agricultural sector. In the establishment of practices of greenhouse gas mitigation for this sector, the objective of this study was to evaluate the effect of soil tillage, with and without...

Full description

Saved in:
Bibliographic Details
Published in:The Science of the total environment 2019-11, Vol.692, p.1165-1174
Main Authors: Campanha, Mônica Matoso, Oliveira, Alexsandra Duarte de, Marriel, Ivanildo Evódio, Gontijo Neto, Miguel Marques, Malaquias, Juaci Vitoria, Landau, Elena Charlotte, Albuquerque Filho, Manoel Ricardo de, Ribeiro, Fabiana Piontekowski, Carvalho, Arminda Moreira de
Format: Article
Language:English
Subjects:
Emission factor
Greenhouse gases
N2O
No-tillage
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The management system of soils and nitrogen application can cause impacts on the N2O emissions produced by the agricultural sector. In the establishment of practices of greenhouse gas mitigation for this sector, the objective of this study was to evaluate the effect of soil tillage, with and without N fertilization, on N2O emissions from Oxisols under rainfed maize in the Brazilian Cerrado region. The managements were of monoculture maize under conventional tillage (CT) and no-tillage (NT), with (1) and without (0) application of N fertilizer (0 and 257 kg N ha−1). From November 2014 to October 2015, gas emissions were measured. The soil and climate variables were measured and related to the N2O fluxes. In the N-fertilized treatments, N2O fluxes were higher (P 
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2019.07.315