Overview and application of the Mitscherlich equation and its extensions to estimate the soil nitrogen pool fraction associated with crop yield and nitrous oxide emission.

Mewa Singh Dhanoa, Ruth Sanderson, Laura Cardenas, Anita Shepherd, David Chadwick, Powell Christopher D, Ellis Jennifer L, Secundino Lopez, J France

Research output: Chapter in Book/Report/Conference proceedingChapter

12 Downloads (Pure)

Abstract

Background: Natural levels of soil nutrients are spatio-temporally variable and insufficient for agricultural purposes. Artificial fertilisers are applied to achieve higher crop growth rates and yield. Mitscherlich’s equation and Boule’s fertilizer units are described and illustrated in relation to crop yield then applied to estimate the nitrogen (N)-pool fraction in the soil that contributes to a component of greenhouse gas (GHG) emissions, specifically the nitrous oxide (N2O) flux.
Methods: Mitscherlich (1909) proposed a diminishing returns model to extract information about soil N status for production responses. Mitscherlich’s equation was generalised by Baule (1918) and modified by Bray (1945) to account for soil nutrient contributions for multiple fertilisers. These models are examined in this study.
Results: Their application results in the extraction of further information on soil nutrient variability and N2O emission across spatial locations.
Conclusions: Mitscherlich’s equation and Boule’s fertilizer units are useful tools to study soil-fertiliser interaction and compare soil fertility and GHG emission.

Original languageEnglish
Title of host publicationAdvances in Agronomy
PublisherElsevier
Chapter5
Pages269-295
Number of pages26
Volume174
ISBN (Print)978-0-323-98957-2
DOIs
Publication statusPublished - 6 May 2022

Publication series

NameAdvances in Agronomy
PublisherAcademic Press Inc.
ISSN (Print)0065-2113

Keywords

  • Nitrous oxide emission
  • Soil nutrients
  • Baule units
  • Dickson formula
  • Mitscherlich equation
  • Nitrogen cycle

Fingerprint

Dive into the research topics of 'Overview and application of the Mitscherlich equation and its extensions to estimate the soil nitrogen pool fraction associated with crop yield and nitrous oxide emission.'. Together they form a unique fingerprint.

Cite this