Results 61 to 70 of about 623,675 (214)
Soil Characterization Protocol [PDF]
, 2003 The purpose of this resource is to characterize the physical and chemical properties for each horizon in a soil profile. Students identify the horizons of a soil profile at a soil characterization site, then measure and record the top and bottom depth ...
The GLOBE Program, University Corporation for Atmospheric Research (UCAR)
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Piracicaba river basin : mechanical and chemical erosion [PDF]
, 2003 It was carried out the characterization of the mechanical and chemical erosive processes in the Piracicaba River basin, for the period 1992-1996, in terms of the fluvial transport of dissolved and particulate materials.
Bortoletto Junior, Milton José +2 more
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Technical note: A bootstrapped LOESS regression approach for comparing soil depth profiles [PDF]
, 2016 Understanding the consequences of different land uses for the soil system is important to make better informed decisions based on sustainability. The ability to assess change in soil properties, throughout the soil profile, is a critical step in this ...
Henrys, Peter A. +3 more
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Pesquisa Agropecuária Tropical, 2015 Agricultural gypsum has been suggested to enhance the soil chemical characteristics in depth for favoring the movement of some nutrients into lower soil layers.
Claudir José Basso +3 more
doaj +1 more source
Soil profiles: the more we see, the more we understand [PDF]
The aesthetics of soils have fascinated soil scientists in all times. Since the late 1800s soil profile drawings, paintings and photographs have been depicted in hundreds of text books.
Hartemink, A.E.
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Revista Brasileira de Ciência do Solo, 2009 Alterações estruturais causadas no solo pelos sistemas de manejo podem resultar em compactação e interferir no desenvolvimento radicular das culturas. Com o objetivo de avaliar os influxos do tipo de manejo sobre a estrutura do solo, por meio de métodos ...
Mausy Marchel Marques Domingos +4 more
doaj +1 more source
Investigation of remote sensing techniques of measuring soil moisture [PDF]
Major activities described include development and evaluation of theoretical models that describe both active and passive microwave sensing of soil moisture, the evaluation of these models for their applicability, the execution of a controlled field ...
Blanchard, A. J. +5 more
core +1 more source
Impact of soil tillage and land use on soil organic carbon decline under Mediterranean conditions [PDF]
, 2012 Soils under Mediterranean climate conditions frequently have low to very low levels of soil organic matter (SOM), as a result of low biomass production under the predominantly rainfed conditions and the intensive tillage operations commonly practiced. In
Barros, José +3 more
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Pesquisa Agropecuária Brasileira, 2006 O objetivo deste trabalho foi desenvolver um método para determinar a distribuição e o desenvolvimento de raízes metabolicamente ativas de cana-de-açúcar no solo, por meio da técnica da diluição do isótopo 15N.
Carlos Eduardo Faroni +1 more
doaj +1 more source
Aggregating available soil water holding capacity data for crop yield models [PDF]
The total amount of water available to plants that is held against gravity in a soil is usually estimated as the amount present at -0.03 MPa average water potential minus the amount present at -1.5 MPa water potential.
Baumgardner, M. F. +3 more
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