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| Rocha,Omar Cruz; Ramos,Maria Lucrécia Gerosa; Veiga,Adriano Delly; Guerra,Antonio Fernando; Bartholo,Gabriel Ferreira; Rodrigues,Gustavo Costa; Silva,Juliano Escobar da. |
| 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, 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,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Urochloa decumbens; Cover crops; Soil physical quality; Soil porosity; Water availability. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901476 |
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| Costa,Adriana Rodolfo da; Sato,Juliana Hiromi; Ramos,Maria Lucrécia Gerosa; Figueiredo,Cícero Célio de; Souza,Géssica Pereira de; Rocha,Omar Cruz; Guerra,Antônio Fernando. |
| Phosphorus fertilization and irrigation increase coffee production, but little is known about the effect of these practices on soil organic matter and soil microbiota in the Cerrado. The objective of this study was to evaluate the microbiological and oxidizable organic carbon fractions of a dystrophic Red Latossol under coffee and split phosphorus (P) applications and different irrigation regimes. The experiment was arranged in a randomized block design in a 3 x 2 factorial design with three split P applications (P1: 300 kg ha-1 P2O5, recommended for the crop year, of which two thirds were applied in September and the third part in December; P2: 600 kg ha-1 P2O5, applied at planting and then every two years, and P3: 1,800 kg ha-1 P2O5, the requirement for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: P cycling; Soil microbial activity; Acid phosphatase; Soil organic matter. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100006 |
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