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Type: Artigo
Title: Chemical And Hydrophysical Attributes Of An Oxisol Under Coffee Intercropped With Brachiaria In The Cerrado
Author: Rocha
Omar Cruz; Gerosa Ramos
Maria Lucrecia; Veiga
Adriano Delly; Guerra
Antonio Fernando; Bartholo
Gabriel Ferreira; Rodrigues
Gustavo Costa; da Silva
Juliano Escobar
Abstract: 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, Brasilia, 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.
Subject: Coffea Arabica
Urochloa Decumbens
Cover Crops
Soil Physical Quality
Soil Porosity
Water Availability
Editor: Empresa Brasil Pesq Agropec
Citation: Pesquisa Agropecuária Brasileira. Empresa Brasil Pesq Agropec, v. 51, p. 1476 - 1483, 2016.
Rights: aberto
Identifier DOI: 10.1590/S0100-204X2016000900046
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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