SciELO - Scientific Electronic Library Online

vol.51 issue9Characterization of soil macrofauna in grain production systems in the Southeastern state of Piauí, BrazilPhysico-hydric conditions of an Alfisol cultivated with soybean under no-tillage and conventional tillage author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Pesquisa Agropecuária Brasileira

Print version ISSN 0100-204XOn-line version ISSN 1678-3921


ROCHA, Omar Cruz et al. Chemical and hydrophysical attributes of an Oxisol under coffee intercropped with brachiaria in the Cerrado. Pesq. agropec. bras. [online]. 2016, vol.51, n.9, pp.1476-1483. ISSN 0100-204X.

The objective of this work was to evaluate the effect of irrigation and of the presence of brachiaria (Urochloa decumbens) between coffee (Coffea arabica) rows on coffee yield and on chemical and hydrophysical attributes of a Typic Haplustox. The study was conducted in the Cerrado region in Planaltina, Brasília, DF, Brazil, in a randomized complete block design, arranged in split-split plots, with four replicates. Water regimes (irrigated or rainfed) were assigned to the main plots, inter-row management systems to the subplots, and soil layers to the sub-subplots. The following soil attributes were determined: total organic carbon, total nitrogen, C/N ratio, carbon and nitrogen stocks, bulk density, aggregate stability, total porosity, macroporosity, low-retention microporosity, remaining microporosity, criptoporosity, and total and readily-available water, besides coffee yield. Irrigation of coffee plants, associated with brachiaria intercropped as a cover crop, increased coffee yield and favored chemical and hydrophysical soil attributes, improving soil structure and its ability to store water. Irrigation favors organic carbon stocks in the upper soil layers, whereas brachiaria favors soil physical attributes related to water availability to coffee.

Keywords : Coffea arabica; Urochloa decumbens; cover crops; soil physical quality; soil porosity; water availability.

        · abstract in Portuguese     · text in English     · English ( pdf )