https://www.socictopen.socict.org/files/original/a7c295c8370121a689c0fc7b271f3f41.pdf c3ae7d01a01911753435c94ede916acc Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Agricultura sostenible Description An account of the resource Dominio científico: Agricultura sostenible Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Variabilidade espacial de atributos físicos em solos de vale aluvial no semiárido de Pernambuco Spatial variability of physical attributes of soil in alluvial valley of semiarid region of Pernambuco state Creator An entity primarily responsible for making the resource Robertson V. de P. Fontes Júnior, Abelardo A. A. Montenegro, Suzana M. G. L. Montenegro, Karla S. Santos, Brivaldo G. de Almeida, Tafnes da S. Andrade Description An account of the resource As características físicas e hidráulicas do solo se constituem em condicionantes a planos de manejo agrícola. Objetivou-se avaliar atributos físicos em solos de um vale aluvial e sua variabilidade, no semiárido do Estado de Pernambuco, na bacia hidrográfica do Rio Ipanema. Técnicas estatísticas e geoestatísticas foram utilizadas a fim de se investigar o grau de dependência e a variabilidade espacial dos atributos, em lotes de agricultura familiar. O coeficiente de variação apresentou-se alto para a condutividade hidráulica do solo e médio para a resistência à penetração de raízes e para as frações granulométricas areia, argila e silte. Tal coeficiente foi baixo para a densidade do solo e de partículas e porosidade total. Foram investigadas as estruturas de dependência espacial para as variáveis estudadas, encontrando-se alcances variando de 135 m para a condutividade hidráulica a 465 m para o conteúdo de silte. Mapa de isolinhas foi elaborado por krigagem representando a variabilidade espacial da condutividade hidráulica, com moderado grau de dependência espacial. As frações granulométricas areia total e silte (%) também apresentaram grau de dependência espacial moderado. A resistência à penetração, densidade do solo e de partículas, não apresentaram dependência espacial na escala de investigação adotada. Foi possível identificar regiões de maior aptidão agrícola verificando-se, através do mapeamento, que os solos francos tendem a apresentar elevada resistência à penetração e baixa condutividade hidráulica.Soil physical and hydraulic characteristics are relevant for agricultural management, particularly at irrigation districts. The objective of this study was to evaluate the spatial variability of physical attributes of soil in an alluvial valley in the semiarid region of Pernambuco State, at the Ipanema River Watershed. Statistical techniques and geostatistics were applied to observe the degree of dependence and the spatial variability of soil physical properties, in plots adopted for communal agriculture. The coefficient of variation for the hydraulic conductivity was high, medium for soil resistance to root penetration and for sand, clay and silt. For bulk density, particle density and porosity, however, such coefficient was low. Spatial dependence structures were investigated, with ranges spanning from 135 m, for soil hydraulic conductivity, to 465 m, for silt content. Contour map was produced by kriging interpolation, representing the spatial variability of hydraulic conductivity, which showed moderate spatial dependence. Resistance to root penetration, soil density and particle distribution presented spatial random behavior, for the adopted spatial scale. It was possible to identify regions with higher agricultural potential. From the produced map, it was highlighted that loam soils usually present higher resistance to root penetration, and low hydraulic conductivity. Date A point or period of time associated with an event in the lifecycle of the resource 2012 Subject The topic of the resource Geoestatística, condutividade hidráulica, geoestatistics, hydraulic conductivity, penetration resistance, resistência do solo à penetração Identifier An unambiguous reference to the resource within a given context 10.1590/S1415-43662012000800003 Source A related resource from which the described resource is derived Revista Brasileira de Engenharia Agrícola e Ambiental - Agriambi Publisher An entity responsible for making the resource available Universidade Federal de Campina Grande Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Agriculture (General) Relation A related resource <a href="http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S1415-43662012000800003" target="_blank" rel="noreferrer noopener">http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S1415-43662012000800003</a>