Agriculture, Ecosystems and Environment 247 (2017) 371–378 Contents lists available at ScienceDirect Agriculture, Ecosystems and Environment journal homepage: www.elsevier.com/locate/agee Research paper Determining optimum nitrogen input rate and optimum yield-scaled nitrous MARK oxide emissions: Theory, ﬁeld observations, usage, and limitations a,1, b,1 Dong-Gill Kim , Donna Giltrap Wondo Genet College of Forestry and Natural Resources, Hawassa University, PO Box 128, Shashemene, Ethiopia Landcare Research, Palmerston North, 4442, New Zealand ARTICLE I NFO ABSTRACT Keywords: Nitrous oxide (N O) is one of the major greenhouse gases causing global warming and climate change. Recently, Nitrogen input studies showed that the nitrogen (N) input producing optimum amount of crop yields may minimise yield-scaled Yields N O emissions in agricultural production. Objectives of the study were to 1) investigate theoretical backgrounds Nitrous oxide of yield, N O emission, and yield-scaled N O emission responses to N input, 2) suggest concepts of optimum N 2 2 Yield-scaled N O emissions input rate and optimum yield-scaled N O emission and derive equations for them and 3) test with ﬁeld ob- Optimum nitrogen input rate servations, and 4) assess usage and limitations and suggest future studies. We have proposed a concept and Optimum yield-scaled N O emissions
Agriculture, Ecosystems & Environment – Elsevier
Published: Sep 1, 2017
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