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Root system distribution and yield of 'Conilon' coffee propagated by seeds or cuttings PAB
Partelli,Fábio Luiz; Covre,André Monzoli; Oliveira,Marcos Goes; Alexandre,Rodrigo Sobreira; Vitória,Edney Leandro da; Silva,Marcelo Barreto da.
The objective of this work was to evaluate the root system distribution and the yield of 'Conilon' coffee (Coffea canephora) propagated by seeds or cuttings. The experiment was carried out with 2x1 m spacing, in an Oxisol with sandy clay loam texture. A randomized complete block design was used, following a 2x9x6 factorial arrangement, with two propagation methods (seeds and cuttings), nine sampling spacings (0.15, 0.30, 0.45, 0.60, 0.75, and 0.90 m between rows, and 0.15, 0.30, and 0.45 between plants within rows), six soil depths (0.10-0.20, 0.20-0.30, 0.30-0.40, 0.40-0.50, and 0.50-0.60 m), and six replicates. Soil cores (27 cm3) with roots were taken from 12 experimental units, 146 months after planting. The surface area of the root system and root...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea canephora; Root diameter; Root length; Root volume; Vegetative propagation.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000500349
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Effects of tillage systems on physical properties of a cohesive yellow argisol in the northern state of Espírito Santo, Brazil Rev. Bras. Ciênc. Solo
Zuffo,Valmir José; Pires,Fabio Ribeiro; Bonomo,Robson; Vitória,Edney Leandro da; Celin Filho,Ademar; Santos,Eduardo Oliveira de Jesus.
Tillage systems are a key element of the technology of crop production, both with a view to crop yield and from the perspective of soil conservation and sustainability of the production system. The aim of this paper was to evaluate the effects of five tillage systems on the physical properties of a cohesive Yellow Argisol. The experiment was installed in the field on January 21, 2011 and lasted 260 days, in an area previously used as pasture with Brachiaria grass without liming or fertilization, but irrigated by a low pressure spray system. The treatments, in five replications and in a randomized block design, consisted of: 1) disk plow (twice) + disk harrow + ridge-furrow tillage (raising a ridge along the planting row), 135 days after transplanting (DP +...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carica papaya; Cohesive soils; Coastal plains; Soil management; Soil physics.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500026
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Emergy efficiency analysis of sugarcane as a raw material for ethanol production Rev. Ciênc. Agron.
Vitória,Edney Leandro da; Rodrigues,Joice Paraguassú.
ABSTRACT In recent years, the expansion of sugarcane cultivation in Brazil and its growing importance in the Brazilian economy have been driven by a sharp increase in fuel alcohol production. This increase in fuel alcohol production was accompanied by increasing interest regarding the impacts of fuel crops in Brazil. In this study, regions of sugarcane expansion into deforested areas in the Atlantic Forest were studied by applying the emergy theory and indices. Environmental and economic inputs and the sustainability of the sugarcane production system were evaluated with the emergy method. The transformity (TR) was equal to 1.78E+11 seJ kg-1, the yield rate (EYR) was equal to 1.30, the investment rate was equal to 3.29, the environmental load rate was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sustainability; Environment; Ethanol production.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000400616
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