Greenhouse gas emissions from an irrigated cropping rotation with dairy manure utilization in a semiarid climate
نویسندگان
چکیده
This long-term study was established to increase knowledge of greenhouse gas (GHG) emissions from irrigated cropping systems utilizing dairy manure solids and compost in semiarid southern Idaho. The objective this field determine the effect synthetic N fertilizer (urea or SuperU [enhanced-efficiency fertilizer]), composted manure, (fall spring applied), a control (no manure) on nitrous oxide (N2O), carbon dioxide (CO2), methane (CH4) over growing season. treatments were not applied alfalfa (Medicago sativa L.) (2017) but corn (Zea mays (2018; except SuperU) barley (Hordeum vulgare (2019). Cumulative N2O losses 3 yr ranged 2.8 5.2 kg N2O-N ha–1, with fall emitting greatest amounts N2O. Emission factors indicated that up 0.79% total lost as during seasons. CO2 CH4 across rotation average 12,170 CO2–C ha–1 –0.77 CH4–C respectively, no significant differences among treatments. Major pulses associated early-season irrigation events incorporation overall fluxes tended be when soil temperatures higher. Dairy applications also found cause rapid increases organic (SOC) top 30 cm under barley. Despite fact does elevated emissions, it should considered an alternative use due its ability SOC potentially help reduce global warming potential.
منابع مشابه
Monitoring Carbon Sequestration and Greenhouse Gas Emissions from Irrigated AgroEcosystems
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ژورنال
عنوان ژورنال: Agronomy Journal
سال: 2021
ISSN: ['2690-9073', '2690-9138', '1072-9623', '1435-0645', '0095-9650', '2690-9162', '0002-1962']
DOI: https://doi.org/10.1002/agj2.20599