Using proximal sensors to assess pedogenetic development of Inceptisols and Oxisols in Brazil

Silva, Fernanda Magno; Silva, Sérgio Henrique Godinho; Teixeira, Anita Fernanda dos Santos; Inda, Alberto Vasconcellos; Santos, Tatiele Frett dos; Weindorf, David C.; Guilherme, Luiz Roberto Guimarães; Curi, Nilton

doi:10.1016/j.geodrs.2021.e00465

Cited by 3 publications

(3 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A su vez, la correlación observada entre el índice de óxidos férricos (B11/B8) y el contenido de Fe del suelo (Tabla 2 y Tabla 3), se puede explicar en la detección del proceso de ferralitización que ocurre en suelos con condiciones de buen drenaje, que tiene como resultado la acumulación de óxidos de hierro y aluminio en la fracción arcilla del suelo (Silva et al, 2022). Se ha reportado que los óxidos de hierro tienen una alta capacidad de absorción de longitudes de onda que se encuentran en el rango de 800 a 900 nm (Soydan et al, 2021).…”

Section: Análisis De La Información Obtenidaunclassified

Estimación de analitos del suelo en la altillanura, con teledetección sentinel-2 y modelos de regresión

Gómez Chávez,

Feo Mahecha,

Parra Gonzalez

2024

rev.investig.agrar.ambient.

View full text Add to dashboard Cite

Contextualization: Incorporation of new techniques and technologies to know the characteristics and composition of soils used in agricultural production is booming. The free license products such as Sentinel-2 satellite images, allow correlating the edaphic properties with spectral indices. Knowledge gap: In the agricultural sector, the indices calculated from satellite images have been centered on characterization of vegetation. To a lesser proportion, studies have been carried out with indexes used in mineral prospecting to correlate with the chemical characteristics of the soil. Purpose: This study was developed to evaluate the correlation of ferric oxide, ferrous silicate, ferrous iron, and alteration indices with the content of chemical elements of importance in crop production. Methodology: A crop field of 282 hectares in the municipality of Puerto López in the department of Meta was selected. The evaluated indices from a set of Sentinel-2 imagery were calculated. After indices obtention, 40 sites were selected to do a soil composite sampling and determine the following characteristics: pH in water (1:1 potentiometric), Organic Matter (Walkey and Black), P (Bray II), Al (KCl 1N), Ca, Mg, K y Na (Ammonium acetate), Fe (DTPA). With the obtained information, a multiple regression analysis using the stepwise method was performed; as independent variables, the raster layers of the indexes calculated were used, and the variable to predict were the properties determined in the laboratory. Results and conclusions: The evaluated indices showed a higher correlation to 0.60 with Ca and Mg content. A correlation between 0.40 and 0.60 was found between the indices and organic carbon y Fe. The regression models calculated give adjustments of 0.54, 0.47, and 0.33 for Mg, Ca, and Fe, respectively. The findings of this research allow us to understand from Sentinel-2 images that it is possible to obtain relevant indexes for agricultural production in conditions of the Colombian Plateau.

show abstract

Section: Análisis De La Información Obtenidaunclassified

Estimación de analitos del suelo en la altillanura, con teledetección sentinel-2 y modelos de regresión

Gómez Chávez,

Feo Mahecha,

Parra Gonzalez

2024

rev.investig.agrar.ambient.

View full text Add to dashboard Cite

show abstract

“…The low TP stocks observed in the northeastern region of Brazil, in the Paraná River basin, and in some plateaus such as the region of Barreiras in the state of Bahia are mainly due to the low P contents in the parent material. These regions are dominated by sandstones composed mainly of quartz and low P contents or by felsic rocks that also contain low P contents (da Silva et al, 2022;Schaefer et al, 2023). In addition, in the northeastern region, the arid climate negatively influences the inputs of organic P into the soil, reducing its stocks (Menezes et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…In soils developed from plutonic rocks, the oxide contents were higher in Plutonic Gabbroic and Ultramafic (Pgu) rocks compared to Plutonic Granitic (Pg) rocks. Pgu rocks have a mineralogical composition very similar to basalt, with a notable presence of ferromagnesian minerals that are more easily weathered (Guimarães et al, 2017;Silva et al, 2022). On the other hand, Pg rocks predominantly consist of highly crystallized minerals that are highly resistant to chemical weathering (Heuze, 1983).…”

Section: Soils Clay Fraction Major Oxides Mapsmentioning

confidence: 99%

Fine scale mapping of phosphorus stocks in brazilian soils by geotechnologies: implications for a sustainable agriculture

Rosas

View full text Add to dashboard Cite

show abstract

Proximal sensors for modeling clay mineralogy and characterization of soil textural fractions developed from contrasting parent materials

Silva,

Andrade

et al. 2024

CATENA

View full text Add to dashboard Cite

Using proximal sensors to assess pedogenetic development of Inceptisols and Oxisols in Brazil

Cited by 3 publications

References 46 publications

Estimación de analitos del suelo en la altillanura, con teledetección sentinel-2 y modelos de regresión

Estimación de analitos del suelo en la altillanura, con teledetección sentinel-2 y modelos de regresión

Fine scale mapping of phosphorus stocks in brazilian soils by geotechnologies: implications for a sustainable agriculture

Proximal sensors for modeling clay mineralogy and characterization of soil textural fractions developed from contrasting parent materials

Contact Info

Product

Resources

About