Journal of Food, Agriculture and Environment

Optimisation and risk analysis of greenhouse gas emissions depending on yield and nitrogen rates in rapeseed cultivation

Author(s):

Magdalena Borzęcka-Walker *, Antoni Faber, Rafał Pudełko, Zusanna Jarosz, Alina Syp, Jerzy Kozyra

Recieved Date: 2013-05-21, Accepted Date: 2013-10-19

Abstract:

Attemptation to optimise the N dose (N rate), especially by reducing the amount, brings a specific risk of yield reduction where the agriculture GHG emissions is weighted and measured by CO₂ eq MJ^-1 FAME. The paper presents an optimisation of agricultural GHG emissions dependant on the size of yield and doses of N, desirability of optimisation, risk analysis for the studied variables as well as estimates for the uncertainty of agricultural GHG emissions, for which a selected optimisation goal was met. It was found that the optimisation of agricultural GHG emissions, with an allocation of rapeseed cake through its impact on crop yields and N doses could lead to a reduction of emissions measured in practice by as much as 2 g CO₂ eq MJ^-1 FAME. Risk analysis has shown that this can be achieved only through yield increase by up to 7.1% compared to the median of census data. There was no ability to influence the emissions by reducing the dose of N. Agricultural GHG emissions, and a reduction can have a significant impact on the size of their uncertainty

Keywords:

FAME, rapeseed, agricultural GHG emissions, optimisation, risk and uncertainty

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Journal: Journal of Food, Agriculture and Environment
Year: 2013
Volume: 11
Issue: 3&4
Category: Agriculture
Pages: 1002-1004

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