Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/40318
Title: Spatial variability of soil pH sampled by two methodologies used in precision agriculture in farms under crop rotation
Other Titles: Variabilidad espacial del pH del suelo muestreado por dos metodologías utilizadas en agricultura de precisión en granjas bajo rotación de cultivos
Keywords: Spatial variability
Mobile contact sensor
Grid sampling
Geostatistics
Variabilidade espacial
Sensor de contato móvel
Amostragem em grade
Geoestatística
Sensor de contacto móvil
Muestreo en cuadrícula
Issue Date: Apr-2019
Publisher: Universidad Nacional de Colombia
Citation: FERRAZ, G. A. e S. Spatial variability of soil pH sampled by two methodologies used in precision agriculture in farms under crop rotation. DYNA, Medellín, v. 86, n. 209, p. 289-297, Apr./June 2019.
Abstract: This study aimed to characterize the spatial variability of pH in soils of two farms in the state of Paraná, Brazil, based on two different sampling methods used in precision agriculture, by means of geostatistical analyzes. The first method of sampling the pH grid consisted in the collection of soil samples by the traditional method (1 point / ha). The second method of pH determination was by on-the-go soil sensor (200 points / ha). The spherical model was better suited to most semivariograms, regardless of the sampling method. After adjusting the semivariograms for soil pH determination methods, thematic maps were made using normal kriging. The best spatial distribution of pH was obtained where the attribute was sampled by the on-the-go sensor. The number of pH samples collected and the sampling method influenced the visual representation of pH variability.
URI: http://repositorio.ufla.br/jspui/handle/1/40318
Appears in Collections:DEA - Artigos publicados em periódicos
DEG - Artigos publicados em periódicos



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