Abnormal shapes of production function: Model interpretations
| Autor: | Wilfried Mirschel, Alexander Topaj |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Forestry 04 agricultural and veterinary sciences Function (mathematics) Horticulture Plateau (mathematics) 01 natural sciences Computer Science Applications Function model Inflection point Phenomenon Distortion 040103 agronomy & agriculture Econometrics 0401 agriculture forestry and fisheries Production (economics) Crop simulation model Agronomy and Crop Science 010606 plant biology & botany Mathematics |
| Zdroj: | Computers and Electronics in Agriculture. 145:199-207 |
| ISSN: | 0168-1699 |
| DOI: | 10.1016/j.compag.2017.12.039 |
| Popis: | An abnormal non-monotonic shape of production function (response of obtained yield to increasing rates of mineral nitrogen fertilizers) has been observed in experimental field trials. Often, the observed effect (an inflection point, or intermediate plateau or even local undershoot of the “yield-fertilization” curve) is treated as a test distortion and will be ignored or sorted out. This article presents the authors’ efforts to interpret and to explain similar phenomenon by means of investigating two mechanistic crop simulation models – AGROSIM and AGROTOOL. It is demonstrated that an imitation model can be used as a valuable tool of scientific research, allowing for the hypothesising of alternative understandings of non-trivial natural phenomena. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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