Morpho - structural evaluation of various soils subjected to different use intensity under no - tillage

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According to many evidences, in Argentina, no-tillage (NT) coupled with soybean monoculture leads to adverse soil structure features. While some farmers have simplified the production system through soybean monoculture others have intensified the land-use by increasing the number and diversity in th...

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Detalles Bibliográficos
Otros Autores: Behrends Kraemer, Filipe, Soria, Marcelo Abel, Castiglioni, Mario Guillermo, Duval, Matías, Galantini, Juan Alberto, Morrás, Héctor José María
Formato: Artículo
Lenguaje:Inglés
Materias:
VESS
AGGREGATE MORPHOLOGY
IMAGE ANALYSES
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2017behrendskraemer.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 |a Morpho - structural evaluation of various soils subjected to different use intensity under no - tillage 
520 |a According to many evidences, in Argentina, no-tillage (NT) coupled with soybean monoculture leads to adverse soil structure features. While some farmers have simplified the production system through soybean monoculture others have intensified the land-use by increasing the number and diversity in the crop sequence. The effects of this intensification, in terms of soil structural quality, are contradictory, possibly caused by the increase of machinery traffic. In order to assess soil structural quality and the performance of selected morpho-structural variables with different levels of intensification, we analyzed plots under NT with high and low crop sequence intensification (Good GAP- and Poor PAP-, agricultural practices respectively) and reference plots in four soils (two Argiudolls, an Haplustoll and an Hapludert) of the Argentinian Pampean region. The morpho-structural variables assessed were Visual Evaluation of Soil Structure at field scale (VESS), visible porosity (Vp), roundness (Rd), eccentricity (Ecc) and 3-D aggregate features (faces, corners and edges). Plots with higher frequency of cereals in the sequence (GAP) presented on average higher VESS scores, higher Vp values and less rounded aggregates with more faces and corners, suggesting that crop sequence intensification induces favorable structural features. VESS, Vp, number of faces and corners were strongly correlated with aggregate stability tests mainly with the fast and fast10s test (r:0.56, 0.74; 0.48, 0.52; 0.46, 0.49 and 0.42, 0.50, respectively) and with the more labile organic carbon fractions POCc and POCf- (r: 0.49, 0.5; 0.5, ns; 0.38, 0.48 and 0.31, 0.43, respectively). These observations suggest that the variables examined, concerning aggregates and pores were sensitive to changes in crop sequence and are useful soil quality indicators. However, the occurrence of platy structures also under GAP shows the need to adjust the VESS method to the NT system. Besides, the effect of agricultural intensification on soil morphology was modulated by soil type. In consequence, this last factor has also to be considered for the definition of a quality indicator to track the effect of crop sequences intensification under no-till management. 
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653 |a VESS 
653 |a AGGREGATE MORPHOLOGY 
653 |a IMAGE ANALYSES 
700 1 |a Behrends Kraemer, Filipe  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Manejo y Conservación de Suelos. Buenos Aires, Argentina.  |u Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación de Recursos Naturales (CIRN). Instituto de Suelos. Castelar - Hurlingham, Buenos Aires, Argentina.  |9 22849 
700 1 |9 49057  |a Soria, Marcelo Abel  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Biología Aplicada y Alimentos. Cátedra de Microbiología Agrícola. Buenos Aires, Argentina.  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA). Buenos Aires, Argentina.  |u CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones en Biociencias Agrícolas y Ambientales (INBA). Buenos Aires, Argentina. 
700 1 |a Castiglioni, Mario Guillermo  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Ingeniería Agrícola y Uso de la Tierra. Cátedra de Manejo y Conservación de Suelos. Buenos Aires, Argentina.  |9 3430 
700 1 |a Duval, Matías  |u Universidad Nacional del Sur. Departamento de Agronomía. Centro de Recursos Naturales Renovables de las Zonas Semiáridas (CERZOS). Bahía Blanca, Buenos Aires, Argentina.  |u CONICET - Universidad Nacional del Sur. Departamento de Agronomía. Centro de Recursos Naturales Renovables de las Zonas Semiáridas (CERZOS). Bahía Blanca, Buenos Aires, Argentina.  |9 67303 
700 1 |9 16073  |a Galantini, Juan Alberto  |u Universidad Nacional del Sur. Departamento de Agronomía. Centro de Recursos Naturales Renovables de las Zonas Semiáridas (CERZOS). Bahía Blanca, Buenos Aires, Argentina.  |u CONICET - Universidad Nacional del Sur. Departamento de Agronomía. Centro de Recursos Naturales Renovables de las Zonas Semiáridas (CERZOS). Bahía Blanca, Buenos Aires, Argentina. 
700 1 |a Morrás, Héctor José María  |u IInstituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación de Recursos Naturales (CIRN). Instituto de Suelos. Castelar - Hurlingham, Buenos Aires, Argentina.  |9 19698 
773 0 |t Soil and tillage research  |a International Soil Tillage Research Organization  |w SECS000167  |g Vol.169 (2017), p.124-137, tbls., grafs., fot. 
856 |f 2017behrendskraemer  |i En Reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2017behrendskraemer.pdf  |x ARTI201806 
856 |u https://www.elsevier.com  |z LINK AL EDITOR 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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