Complementary irrigation and direct drilling have little effect on soil organic carbon content in semiarid Argentina

Authors
Giubergia, Juan Pablo; Martellotto, Eduardo; Lavado, Raul Silvio
Publication Year
2013
Language
English
Format
article
Status
Published version
Description
Irrigation and tillage modify soil properties. The aim of the present study was to evaluate the simultaneous effect of complementary irrigation and zero tillage (ZT) on soil organic carbon (SOC). Two treatments (irrigated and rain fed soils) were evaluated in a field experiment set up in Manfredi, Córdoba province, Argentina. The soil was grid-sampled at the beginning of the experiment in 1996 and soil organic carbon (SOC), aggregate stability (AS), bulk density (BD), electrical conductivity (EC) and exchangeable sodium percentage (ESP) were determined in 2007. In the irrigated treatment SOC tended to increase on the surface layer in the irrigated experiment. The increase in SOC stock was estimated as 0.221 tn C/ha/year but higher C-CO2 emission also occurred. The AS of the surface horizon was higher under irrigation, associated with SOC and soil EC. The quasi-equilibrium in SOC was explained by a greater intake of crop residues counteracted by an increased biological activity in the irrigated soil.
EEA Manfredi
Fil: Giubergia, Juan Pablo. INTA. Estación Experimental Agropecuaria Manfredi; Argentina
Fil: Martellotto, Eduardo. INTA. Estación Experimental Agropecuaria Manfredi; Argentina
Fil: Lavado, Raul Silvio. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de investigaciones en Biociencias Agrícolas y Ambientales; Argentina
Source
Soil and tillage research 134 : 147-152. (November 2013)
Subject
Riego Complementario
Perforación de Pozos
Carbono Orgánico del Suelo
Zona Semiárida
Cero-labranza
Supplemental Irrigation
Water Drilling
Soil Organic Carbon
Semiarid Zones
Zero Tillage
Argentina
Access level
Restricted access
License
Repository
INTA Digital (INTA)
Institution
Instituto Nacional de Tecnología Agropecuaria
OAI Identifier
oai:localhost:20.500.12123/4656