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Mechanisms of Nitrogen Use in Maize

College of Agronomy, Gansu Agricultural University, Lanzhou 730010, China
Gansu Provincial Key Laboratory of Aridland Crop Science, Lanzhou 730070, China
Department of Agronomy and Plant Genetics, University of Minnesota, St. Paul, MN 55108, USA
Authors to whom correspondence should be addressed.
Agronomy 2019, 9(12), 775;
Received: 22 October 2019 / Revised: 11 November 2019 / Accepted: 18 November 2019 / Published: 20 November 2019
(This article belongs to the Special Issue Sustainable Cropping Systems)
Nitrogen (N) fertilizers are needed to enhance maize (Zea mays L.) production. Maize plays a major role in the livestock industry, biofuels, and human nutrition. Globally, less than one-half of applied N is recovered by maize. Although the application of N fertilizer can improve maize yield, excess N application due to low knowledge of the mechanisms of nitrogen use efficiency (NUE) poses serious threats to environmental sustainability. Increased environmental consciousness and an ever-increasing human population necessitate improved N utilization strategies in maize production. Enhanced understanding of the relationship between maize growth and productivity and the dynamics of maize N recovery are of major significance. A better understanding of the metabolic and genetic control of N acquisition and remobilization during vegetative and reproductive phases are important to improve maize productivity and to avoid excessive use of N fertilizers. Synchronizing the N supply with maize N demand throughout the growing season is key to improving NUE and reducing N loss to the environment. This review examines the mechanisms of N use in maize to provide a basis for driving innovations to improve NUE and reduce risks of negative environmental impacts. View Full-Text
Keywords: maize production; nitrogen use efficiency; nitrogen nutrition maize production; nitrogen use efficiency; nitrogen nutrition
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MDPI and ACS Style

Asibi, A.E.; Chai, Q.; A. Coulter, J. Mechanisms of Nitrogen Use in Maize. Agronomy 2019, 9, 775.

AMA Style

Asibi AE, Chai Q, A. Coulter J. Mechanisms of Nitrogen Use in Maize. Agronomy. 2019; 9(12):775.

Chicago/Turabian Style

Asibi, Aziiba Emmanuel, Qiang Chai, and Jeffrey A. Coulter. 2019. "Mechanisms of Nitrogen Use in Maize" Agronomy 9, no. 12: 775.

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