Evaluating the benefit of integrated precision nitrogen and irrigation management for maize in Minnesota

A. Kechchour; Y. Miao; V. Sharma

Evaluating the benefit of integrated precision nitrogen and irrigation management for maize in Minnesota

In: Precision agriculture '25

Authors:

A. Kechchour

A. Kechchour ymiao@umn.edu, vasudha@umn.edu

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Y. Miao

Y. Miao
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V. Sharma

V. Sharma
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Type:: Chapter

Pages:: 1233–1239

DOI:: https://doi.org/10.1163/9789004725232_161

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Dar Hadith al Hassania

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The objective of this study was to quantify and evaluate the agronomic, environmental and economic benefits of integrated variable rate irrigation (VRI) and variable rate nitrogen (VRN) management of corn in a sandy field in Minnesota, USA. Over three years (2022–2024), traditional farmer practice (FP) and precision nitrogen management (PNM)+VRI reduced 80% (19.61 kg/ha vs 10.87 kg/ha, p>0.001, η²=30.07) of nitrate leaching and an extra US$1900/ha in profit with keeping consistent yield level (10 599 kg/ha vs 10465 kg/ha). VRI saved water during drought (269 mm rainfall, 2023), and PNM increased nitrogen use efficiency (NUE, p>0.001). Precipitation variability during the growing season affected irrigation savings (15% with VRI) and nitrate leaching trend, while PNM+VRI balanced productivity and sustainability.

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Precision agriculture '25

E-Book ISBN:: 9789004725232

Publisher:: Wageningen Academic

Print Publication Date:: 18 Jun 2025

Subjects
- Life Sciences
  - General
  - Agriculture & Environment

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Evaluating the benefit of integrated precision nitrogen and irrigation management for maize in Minnesota

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Precision agriculture '25

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