Use of Vis-NIR reflectance spectroscopy for estimating soil phosphorus sorption parameters at the watershed scale

S Saidi, S Ayoubi, M Shirvani, SA Mireei, Y Ge… - Soil and Tillage …, 2025 - Elsevier
Measurement of soil phosphorus sorption parameters (PSPs) provides crucial information
on P fertilization and P leaching. Traditional approaches for determining these indices are …

Soil Attributes Mapping with Online Near-Infrared Spectroscopy Requires Spatio-Temporal Local Calibrations

R Canal Filho, JP Molin, MCF Wei, ERO Silva - AgriEngineering, 2023 - mdpi.com
Building machine learning (ML) calibrations using near-infrared (NIR) soil spectroscopy
direct in agricultural areas (online NIR), soil attributes can be fine-scale mapped in a faster …

Optimization of pXRF instrumentation conditions and multivariate modeling in soil fertility attributes determination

JV Ribeiro, FR dos Santos, JF de Oliveira… - … Acta Part B: Atomic …, 2024 - Elsevier
The increasing global demand for agricultural products, food, and energy requires a
sustainable and secure approach to agricultural production. Soil nutrition is vital for …

Spatial distribution as a key factor for evaluation of soil attributes prediction at field level using online near-infrared spectroscopy

R Canal Filho, JP Molin - Frontiers in Soil Science, 2022 - frontiersin.org
In soil science, near-infrared (NIR) spectra are being largely tested to acquire data directly in
the field. Machine learning (ML) models using these spectra can be calibrated, adding only …

Online near-infrared spectroscopy for soil attributes prediction

R Canal Filho - 2023 - teses.usp.br
Precision agriculture (PA) is based on the identification of spatial and temporal variability of
the attributes that influence agricultural production. In this sense, techniques that allow …