マラティヤ・バッタルガジにおけるサイレージ用トウモロコシ生産のカーボンフットプリント、亜酸化窒素排出およびウォーターフットプリント指標の統合評価：平均農家生産インベントリに基づくアプローチ

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:農業生産段階の炭素・N₂O・水フットプリントを同一境界で統合する手法の実例として参照できる。

🏢実務担当者:飼料・食品企業がサプライヤー農家の排出・水使用を把握する際の算定項目の参考になる。

🏛政策担当者:窒素施肥と灌漑管理が排出削減の共通レバーである点は農業環境政策の示唆となる。

Silage maize (Zea mays L.) is a key crop for the production of high-quality forage owing to its high biomass and dry-matter yield; however, achieving high yields requires intensive nitrogen fertilization and —in semi-arid regions— intensive irrigation, which results in a considerable environmental burden. In this study, the carbon footprint, soil-derived nitrous oxide (N₂O) emissions and the green–blue–grey water footprint indicators of silage maize production were assessed within a single, consistent system boundary, based on a production inventory derived from the average input and output values compiled from 60 producers growing silage maize in the Battalgazi district of Malatya province during the 2025 production season. The analytical unit of the footprint calculation is one aggregated representative production inventory. Greenhouse-gas emissions were estimated using the IPCC (2006) Tier 1 method, and the water footprint indicators were calculated following the Water Footprint Assessment Manual (Hoekstra et al., 2011). The green component is an effective-precipitation-based green-water indicator and the blue component an applied-irrigation-water indicator; neither represents measured consumptive crop water use. The results are reported per hectare of production area and per tonne of fresh silage. On average, the production pattern received 320 kg N ha⁻¹ (500 kg urea + 500 kg DAP), 105 L diesel and 1,500 kWh of irrigation electricity per hectare, with a fresh silage yield of 57.5 t ha⁻¹. The total carbon footprint was 4,533.2 kg CO₂e ha⁻¹ (78.8 kg CO₂e t⁻¹). Estimated soil N₂O accounted for 38.9%, urea manufacture for 17.6% and irrigation electricity for 15.5% of the total. The total water footprint was 180.9 m³ t⁻¹ and was dominated by blue water (109.4 m³ t⁻¹; 60%), followed by grey water (55.7) and green water (15.9 m³ t⁻¹). Reducing total nitrogen by 20% through urea alone lowered the carbon footprint by 15.0% and the grey-water indicator by 20% (deterministic what-if calculation under constant-yield assumption). The findings indicate that nitrogen and irrigation management are the shared levers governing the environmental burden, specific to the 2025 season and the producer group examined.

• openalex https://doi.org/10.30910/turkjans.2004512first seen 2026-10-21 04:43:33