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Impact of direct seeding mulch-based cropping systems on soil nematodes in a long-term experiment in Madagascar PAB
Villenave,Cécile; Rabary,Bodovololona; Chotte,Jean-Luc; Blanchart,Eric; Djigal,Djibril.
The objective of this work was to assess the effects of conventional tillage and of different direct seeding mulch-based cropping systems (DMC) on soil nematofauna characteristics. The long-term field experiment was carried out in the highlands of Madagascar on an andic Dystrustept soil. Soil samples were taken once a year during three successive years (14 to 16 years after installation of the treatments) from a 0-5-cm soil layer of a conventional tillage system and of three kinds of DMC: direct seeding on mulch from rotation soybean-maize residues; direct seeding of maize-maize rotation on living mulch of silverleaf (Desmodium uncinatum); direct seeding of bean (Phaseolus vulgaris)-soybean rotation on living mulch of kikuyu grass (Pennisetum...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Crop residues; Indicator; Living mulch; Nematoda; Soil functioning.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800022
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Selecting soil quality indicators for different soil management systems in the Brazilian Cerrado PAB
Stefanoski,Diane Cristina; Figueiredo,Cícero Célio de; Santos,Glenio Guimarães; Marchão,Robélio Leandro.
Abstract The objective of this work was to assess soil quality indicators obtained with different datasets to compare soil management systems in the Brazilian Cerrado. Three criteria were used to select soil physical, chemical, and biological indicators: the full set of indicators obtained, with 36 parameters, for which all the physical, chemical, and biological soil properties were determined; a subset of indicators selected by principal component analysis (20 parameters); and a subset of indicators with some frequency of use in the literature (16 parameters). These indicators were obtained from the following management systems: no-tillage, conventional tillage, and native cerrado vegetation. Soil samples were collected at 0.0-0.1-m soil depth, and soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: No-tillage; Principal component analysis; Soil functioning; Soil health; Soil management; Soil security.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901643
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Hydro-physical characterization of soils under tropical semi-deciduous forest Scientia Agricola
Cooper,Miguel; Rosa,Jaqueline Dalla; Medeiros,João Carlos; Oliveira,Thalita Campos de; Toma,Raul Shiso; Juhász,Carlos Eduardo Pinto.
The study of the hydro-physical behavior in soils using toposequences is of great importance for better understanding the soil, water and vegetation relationships. This study aims to assess the hydro-physical and morphological characterization of soil from a toposequence in Galia, state of São Paulo, Brazil). The plot covers an area of 10.24 ha (320 × 320 m), located in a semi-deciduous seasonal forest. Based on ultra-detailed soil and topographic maps of the area, a representative transect from the soil in the plot was chosen. Five profiles were opened for the morphological description of the soil horizons, and hydro-physical and micromorphological analyses were performed to characterize the soil. Arenic Haplustult, Arenic Haplustalf and Aquertic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ultisol; Alfisol; Water retention; Soil functioning; Image analysis.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000200011
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