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Jack knifing for semivariogram validation. Author(s): CARVALHO, J. R. P. de The semivariogram function fitting is the most important aspect of geostatistics and because of this the model chosen must be validated. Jack knifing may be one the most efficient ways for this valida... ... Repository: BDPA Publication year: 2010
Spatial Relationships Between Soil Water Content and Hydraulic Conductivity in a Highly Structured Clay Soils. Author(s): GREGO, C. R. The water, element essential for life, is present as a large reservoir in the soil. Soil water content varies in space as a consequence of the variability of other related properties and its study is... ... Repository: BDPA Publication year: 2014
Detrending non stationary data for geostatistical applications. Author(s): VIEIRA, S. R.; CARVALHO, J. R. P. de; CEDDIA, M. C.; PAZ GONZÁLEZ The use of geostatistics requires at least that the intrinsic hypothesis be satisfied. The presence of a trend in the data invalidates this hypothesis. One of the ways of solving this problem is by su... ... Repository: BDPA Publication year: 2010
Spatial variability of maximum temperature and chlorophyll in an integrated agricultural-forest system. Author(s): VENDRUSCULO, L. G. ABSTRACT. The objective of this work was to study the variability of maximum temperature and chlorophyll A in an agroforestry system using the geostatistics technique. This study was carried out in an... ... Repository: BDPA Publication year: 2021
Spatial and temporal distribution of South American fruit flyin vineyards. Author(s): BOTTON, M. The South American fruit fly Anastrepha fraterculus (Wied., 1830) is one of the major insect pests of economicimportance in vineyards of Southern Brazil. Understanding species behavior and knowing the... ... Repository: BDPA Publication year: 2019
Spatial variability of soil acidity attributes and the spatialization of liming requirement for corn. Author(s): RESENDE, A. V. de In Brazil, technicians, in most cases, ignore the aspects related to the spatial variability of the soil acidity attributes when liming requirement is calculated. The objective of this study was to va... ... Repository: BDPA Publication year: 2009
Spatial variability of satured soil hydraulic conductivity in the region of Araguaia River - Brazil. Author(s): HAMADA, E.; GOMES, M. A. F. This study evaluates the spatial variability of saturated hydraulic conductivity in the soil in an area of 51,850 ha at the headwaters of the Araguaia River MT/GO. This area is highly vulnerable becau... ... Repository: BDPA Publication year: 2008
Spatial variability of the rainfall erosivity in southern region of Minas Gerais State, Brazil. Author(s): AVANZI, J. C. Rainfall erosivity and its spatial variability were studied for 54 pluviometric stations in Southern Minas Gerais State (48º00? - 44º00?W; 23º50? - 20º00?S), aiming to plan the land-use strategies. Th... ... Repository: BDPA Publication year: 2012
Variabilidade espacial da fertilidade, carbono e nitrogênio do solo em áreas de pastagem e cana-de-açúcar no estado de São Paulo. Author(s): GREGO, C. R.; NOGUEIRA, S. F.; SILVA, G. B. S. da The spatial variability of soil and plant properties has been a concern of researchers, since the variation of any phenomenon in space or time, whether caused by natural processes or by man-imposed ac... ... Repository: BDPA Publication year: 2017
Spatial variability of some biometric attributes of sugarcane plants (variety IACSP93-3046) and its relation to physical and chemical soil attributes. Author(s): GREGO, C. R. Tests to evaluate competition between plants, in general do not consider the soil spatial variability, nevertheless, the uniformity rarely is present and can not be assumed without verification. The a... ... Repository: BDPA Publication year: 2010

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