<p>This study aimed to investigate energy use efficiency and greenhouse gas (GHG) emissions in the table grape (<i>Vitis vinifera</i>&#xa0;L.) production of a&#xa0;geographically indicated variety in Malatya, cultivated without irrigation in the Arapgir district (Malatya, Türkiye). In this study, data were gathered from the 2023–2024 growing season via face-to-face interviews with 34&#xa0;producers. Energy inputs and outputs were estimated from the use of energy equivalents that are widely used for measuring agricultural energy. Four performance indicators, namely, energy use efficiency (EUE), specific energy (SE), energy productivity (EP) and net energy (NE), were calculated and benchmarked against the existing literature. Per-hectare energy input totalled 22,211.79 MJ against 118,000 MJ of output, which gives an EUE of 5.31, which is well above the 1.5–4.0 range that is often quoted for vineyard systems. SE was 2.22 MJ&#xa0;kg⁻<sup>1</sup>, EP was 0.45 kg&#xa0;MJ⁻<sup>1</sup> and NE was 95,788.21 MJ&#xa0;ha⁻<sup>1</sup>. Fossil-based sources were the dominant input side contributing 92.98% of the input; diesel fuel alone accounted for 42.85%, while other major inputs were nitrogen fertilizer (19.37%) and insecticides (17.50%). GHG emissions were calculated at 1244.88 kg CO<sub>2</sub>-eq ha⁻<sup>1</sup> at an intensity of 0.12 kg CO<sub>2</sub>-eq kg⁻<sup>1</sup>. Human labor was the largest single emission source at 44.70%, followed by diesel fuel at 37.47% and nitrogen fertilizer at 7.41%. Overall, rainfed production of grapes (‘Köhnü’) is a&#xa0;relatively energy lean and low carbon system mainly because of the lack of irrigation, which eliminates a&#xa0;major energy burden. That said, the high level of reliance on non-renewable inputs leaves ample room for improvement, especially by increasing the use of renewable energy, more targeted use of fertilizers and pesticides, and policy support for traditional low-input farming. These findings offer empirical support for considering geographically indicated products in the larger debates over energy and climate policies.</p>

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Scientific Analysis of Energy Efficiency and Greenhouse Gas Emissions in Grape Production: The Case of Malatya Arapgir ‘Köhnü’ Grape

  • Kübra Aslan Yılmaz

摘要

This study aimed to investigate energy use efficiency and greenhouse gas (GHG) emissions in the table grape (Vitis vinifera L.) production of a geographically indicated variety in Malatya, cultivated without irrigation in the Arapgir district (Malatya, Türkiye). In this study, data were gathered from the 2023–2024 growing season via face-to-face interviews with 34 producers. Energy inputs and outputs were estimated from the use of energy equivalents that are widely used for measuring agricultural energy. Four performance indicators, namely, energy use efficiency (EUE), specific energy (SE), energy productivity (EP) and net energy (NE), were calculated and benchmarked against the existing literature. Per-hectare energy input totalled 22,211.79 MJ against 118,000 MJ of output, which gives an EUE of 5.31, which is well above the 1.5–4.0 range that is often quoted for vineyard systems. SE was 2.22 MJ kg⁻1, EP was 0.45 kg MJ⁻1 and NE was 95,788.21 MJ ha⁻1. Fossil-based sources were the dominant input side contributing 92.98% of the input; diesel fuel alone accounted for 42.85%, while other major inputs were nitrogen fertilizer (19.37%) and insecticides (17.50%). GHG emissions were calculated at 1244.88 kg CO2-eq ha⁻1 at an intensity of 0.12 kg CO2-eq kg⁻1. Human labor was the largest single emission source at 44.70%, followed by diesel fuel at 37.47% and nitrogen fertilizer at 7.41%. Overall, rainfed production of grapes (‘Köhnü’) is a relatively energy lean and low carbon system mainly because of the lack of irrigation, which eliminates a major energy burden. That said, the high level of reliance on non-renewable inputs leaves ample room for improvement, especially by increasing the use of renewable energy, more targeted use of fertilizers and pesticides, and policy support for traditional low-input farming. These findings offer empirical support for considering geographically indicated products in the larger debates over energy and climate policies.