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| Pimentel,Márcio Sampaio; De-Polli,Helvécio; Aquino,Adriana Maria de; Correia,Maria Elizabeth Fernandes; Rouws,Janaina Ribeiro Costa. |
| The objective of this work was to assess the effect of different coffee organic cultivation systems on chemical and biological soil characteristics, in different seasons of the year. The following systems were evaluated: coffee intercropped with one (CJ1), two (CJ2) or three (CJ3) pigeon pea (Cajanus cajan) alleys; coffee planted under full sun (CS); area planted with sweet pepper and snap bean in a conventional tillage system (AC); and secondary forest area (FFR). Row spacing in CJ1, CJ2, CJ3 and CS was 2.0x1.0, 2.8x1.0, 3.6x1.0, and 2.8x1.0 m, respectively. Soil samples were collected at 10-cm depth, during the four seasons of the year. The results were subjected to analysis of variance, principal component analysis, and redundancy analysis. There was an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cajanus cajan; Coffea arabica; Edaphic macrofauna; Metabolic quotient; Shading; Soil microbial biomass. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000500013 |
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| Rocha,Ricardo Eiras Moreira da; Pimentel,Márcio Sampaio; Zago,Valéria Cristina Palmeira; Rumjanek,Norma Gouvêa; De-Polli,Helvécio. |
| O objetivo deste trabalho foi avaliar o biossólido e proveniente da estação de tratamento de águas servidas domiciliares, como adubo no cultivo da couve (Brassica oleraceae var. acephala, grupo Georgia). O trabalho foi em delineamento de blocos ao acaso, com três tratamentos de adubação, esterco bovino, biossólido e uréia, com quatro repetições. Amostras de solo de cada tratamento foram analisadas quanto a parâmetros químicos, microbiológicos e parasitológicos. Os níveis de metais pesados encontravam-se abaixo dos permitidos pela legislação internacional. Após 54 dias da incorporação do biossólido ao solo, os coliformes fecais eram praticamente nulos e, a partir dos 60 dias, não foram mais encontradas amostras positivas com ovos de helmintos, apesar do... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lodo de esgoto; Metal pesado; Patógeno; Helminto; Coliforme fecal. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003001200010 |
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| Pimentel,Márcio Sampaio; Carvalho,Rubens Silva; Martins,Lindete Míria Vieira; Silva,Adriano Victor Lopes da. |
| The goal of this work was to evaluate the response of edaphic macrofauna, soil microbial biomass carbon, soil basal respiration, metabolic quotient and labile carbon of fumigated soil in a Fluvic Neosol. The experimental design was in randomized blocks, with five treatments (four green manure mix and one control) and four replications, and subsequent planting of melon (Cucumis melo L.) under semi-arid conditions in Juazeiro, Bahia State, Brazil, from August 2006 to August 2007. Soil samples were collected at a depth of 0-10 cm at 6 days before, and 117; 215 and 354 days after green manure mix planting. The results indicate that none of the attributes presented a significant difference for the treatments, but changed significantly in relation to the time of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil quality; Macrofauna edaphic; Plant biomass; Plant mixture; Caatinga forest. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902011000400002 |
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| Pimentel,Márcio Sampaio; Togun,Adeniyi Olumuyiwa; De-Polli,Helvécio; Rouws,Janaína Ribeiro Costa; Guerra,José Guilherme Marinho. |
| The effects of organic fertilization combining cattle manure and pigeon pea shoots on the culture of rocket, planted with one or two plants per hole, including soil microbial biomass carbon, soil respiration, the metabolic quotient, soil fumigation labile carbon, and the dry matter content and total N, K, P, Ca and Mg contents in the leaves and roots of rocket were investigated. The experimental design was randomized blocks in a 2 × 2 × 2 factorial experiment: 0 and 160 kg ha-1 N from cattle manure, 0 and 160 kg ha-1 N from pigeon pea shoots, and one or two plants per hole, with three replicates. The most significant and positive correlations were obtained between leaf K × soil respiration, microbial biomass × leaf N and root Ca × metabolic quotient. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eruca sativa L; Cajanus cajan L; Cattle manure; CO2 evolution; Green manuring. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902012000100014 |
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