2011
DOI: 10.1590/s0100-69162011000400003
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Terrain forms and spatial variability of soil properties in an area cultivatedwith citrus

Abstract: ABSTRACT:The technique of precision agriculture and soil-landscape allows delimiting areas for localized management, allowing a localized application of agricultural inputs and thereby may contribute to preservation of natural resources. Therefore, the objective of this work was to characterize the spatial variability of chemical properties and clay content in the context of soillandscape relationship in a Latosol (Oxisol) under cultivation of citrus. Soil samples were collected at a depth of 0.0-0.2 m in an a… Show more

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Cited by 10 publications
(10 citation statements)
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“…TN showed moderate variability and OC, moderate to strong; the other chemical variables showed high variability (CV > 24%), corroborating with Leão et al (2011). In Area 1 (Table 1), the variation in the OC contents decreased over time, from a CV of 37.3%, before neem application, to 12.5% at 90 days after the first application (sampling 2) and 15.6% at 90 days after the second application (sampling 3), indicating that the uniform application of neem cake in that area may have reduced OC variability, although this reduction in variability also occurred over time in the Area 2, but at lower proportions.…”
Section: Resultssupporting
confidence: 80%
“…TN showed moderate variability and OC, moderate to strong; the other chemical variables showed high variability (CV > 24%), corroborating with Leão et al (2011). In Area 1 (Table 1), the variation in the OC contents decreased over time, from a CV of 37.3%, before neem application, to 12.5% at 90 days after the first application (sampling 2) and 15.6% at 90 days after the second application (sampling 3), indicating that the uniform application of neem cake in that area may have reduced OC variability, although this reduction in variability also occurred over time in the Area 2, but at lower proportions.…”
Section: Resultssupporting
confidence: 80%
“…A distribuição das frações granulométricas (argila, areia e silte) é relacionada aos índices topográficos e gradiente de declividade (LEÃO et al, 2010;LEÃO et al, 2011). Conhecer a textura do solo é importante para sua classificação taxonômica, bem como para entender os processos pedogenéticos que atuam no terreno, considerando que as geoformas da paisagem afetamo controle do movimento de água (divergência e convergência) e atributos do solo, influenciando e condicionando ambientes erosionais e depressionais (CAMPOS et al, 2007).…”
Section: Introductionunclassified
“…Isso pode ser confirmado pelo sentido das isolinhas das classes de variabilidade. Leão et al (2010Leão et al ( , 2011 relatam que a avaliação do sentido das isolinhas das classes de variabilidade pode auxiliar na compreensão da relação solo-paisagem e, por Tabela 2. Médias dos atributos avaliados por classes de solo (1) .…”
Section: Resultsunclassified