Nitrogen‐based proximal sensing and data fusion for management zone delineation

Agrosystems Geosciences & Environment, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 24, 2025

Abstract Delineation of management zones (MZ) based on soil mineral nitrogen (SMN) dynamics can enhance site‐specific management, reduce nitrate leaching, and improve nutrient efficiency. We tested proximal sensing as an alternative to standard laboratory methods capture the spatial variability SMN, (NO 3 − ), moisture (SM) combined these data with topographic remote inputs delineate MZ using fusion k ‐means clustering. Two conventionally managed fields winter oilseed rape ( Brassica napus L.) barley Hordeum vulgare were chosen for Field‐A Field‐B. Fresh samples analyzed in KCl extraction, while global positioning system‐labeled from a sensor (FarmLab) accessed via cloud storage. FarmLab estimated NO SMN higher than results p < 0.05), whereas SM showed no significant difference between two methods. Bland–Altman analysis, which assesses limit agreement ensure consistency, revealed discrepancies NO₃⁻ by both methods, particularly Field‐B, limits ranging −17.40 29.66 mg kg −1 . Results clustering, method grouping into similar categories, evaluated 11 feature sets, combine multiple sources (laboratory data, satellites, data) create comprehensive dataset analysis at different time points autumn spring. The that optimal clustering result varied depending field date. Feature sets variables performed well Field‐A, sensing, topography, improved This study demonstrates how device within‐field examines similarities differences FarmLab). Despite potential integrating in‐season MZ. approach be scaled up farm landscape scale, allowing farmers leverage monitoring, enables efficient promotes sustainable farming practices economic environmental benefits.

Language: Английский

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Assessing benefits of two sensing approaches for variable rate nitrogen fertilization in wheat

Precision Agriculture, Journal Year: 2025, Volume and Issue: 26(3)

Published: April 21, 2025

Language: Английский

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From Proceedings to Actions: European Healthy Soils Conference 2023

European Journal of Soil Science, Journal Year: 2024, Volume and Issue: 76(1)

Published: Dec. 27, 2024

Language: Английский

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