Title:	Soil CO2 emission in 'Tifton 85' bermudagrass pasture fertilized with liquid pig slurry.
Authors:	BRANDÃO, A. A. COUTO, E. G. RODRIGUES, R. de A. R. WEBER, O. L. dos S. PINTO JÚNIOR, O. B.
Affiliation:	ADILSON AMORIM BRANDÃO, IFMT; EDUARDO GUIMARÃES COUTO, UFMT; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS; OSCARLINA LÚCIA DOS SANTOS WEBER, UFMT; OSVALDO BORGES PINTO JÚNIOR, UNIVERSIDADE DE CUIABÁ.
Date Issued:	2021
Citation:	Australian Journal of Crop Science, v. 15, n. 5, p. 661-668, May 2021.
Description:	The application of liquid pig slurry (LPS) to pastures offers potential as a fertilizer but could have a direct influence on soil CO2 emissions. This study evaluated soil carbon dioxide emissions after successive LPS applications to soils under pasture cultivation. The experiment was carried out on 'Tifton-85' bermudagrass pasture cultivated in a red-yellow oxisol soil in the municipality of Lucas do Rio Verde-MT, Brazil. Two treatments were evaluated: the control and an application of 20 m3 ha-1 of LPS after each cut of the pasture. The CO2 emissions from the soil were determined using a high-precision infrared gas analyzer. Soil temperature and soil moisture were determined as were micrometeorological variables. The application of LPS had a significant effect on soil C-CO2 flow. The average flow of C-CO2 from the soil for the control treatment and with the application of LPS was 0.236 g C-CO2 m-2 h-1 and 0.291 g C-CO2 m-2 h-1, respectively. The application of LPS increased the accumulated CO2 emissions from the soil by 23.2%. Soil temperature and moisture are the main factors regulating the process of soil CO2 emission. These factors therefore need to be considered when evaluating the impact of LPS application on greenhouse gas emissions.
Thesagro:	Suíno Águas Residuais Dióxido de Carbono Umidade do Solo Temperatura do Solo
NAL Thesaurus:	Wastewater Swine Carbon dioxide Soil temperature
Keywords:	Soil gas fluxes Soil moisture Fluxos de gás no solo
DOI:	https://doi.org/10.21475/ajcs.21.15.05.p2959
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPS)