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Comparing methods for determination of N uptake in winter wheat

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Bibliographic Details
Title:	Comparing methods for determination of N uptake in winter wheat
Authors:	Engström, Lena, Persson, Kristin, Söderström, Mats
Source:	Precision agriculture 25 (SET TWO VOLUMES) ISBN: 9789004725225
Publisher Information:	Brill \| Wageningen Academic, 2025.
Publication Year:	2025
Subject Terms:	Other Agricultural Sciences not elsewhere specified
Description:	Local and current soil nitrogen (N) mineralisation should guide supplemental N rates. To facilitatethis, methods for rapid assessment of crop N uptake (kg N/ha) were tested in five winter wheat(Triticum aestivum L.) trials in Sweden, around GS39. Four types of measurements were done:leaf sensors, handheld canopy sensors, multispectral drone cameras, and other, manual methods.Several options were found to be simple and accurate enough (mean absolute error for practical use by farmers and advisors. The best results were obtained when leaf and canopymeasurements were combined.
Document Type:	Part of book or chapter of book Conference object
File Description:	application/pdf
DOI:	10.1163/9789004725232_061
Access URL:	https://pub.epsilon.slu.se/38113/
Rights:	CC BY NC ND
Accession Number:	edsair.doi.dedup.....995aa6cb1e695d9fafd0e9bccaf955f8
Database:	OpenAIRE

Description
Abstract:	Local and current soil nitrogen (N) mineralisation should guide supplemental N rates. To facilitatethis, methods for rapid assessment of crop N uptake (kg N/ha) were tested in five winter wheat(Triticum aestivum L.) trials in Sweden, around GS39. Four types of measurements were done:leaf sensors, handheld canopy sensors, multispectral drone cameras, and other, manual methods.Several options were found to be simple and accurate enough (mean absolute error for practical use by farmers and advisors. The best results were obtained when leaf and canopymeasurements were combined.
DOI:	10.1163/9789004725232_061