Effect of Organic Amendment Addition on Soil Properties, Greenhouse Gas Emissions and Grape Yield in Semi-Arid Vineyard Agroecosystems

In semi-arid vineyard agroecosystems, highly vulnerable in the context of climate change, soil organic matter (OM) content is crucial to improvement fertility and grape productivity. The impact OM, from compost animal manure, on properties (e.g., pH, oxidisable C, N, NH4+-N NO3?-N), yield direct greenhouse gas (GHG) emission vineyards was assessed. For this purpose, two wine varieties were chosen managed differently: with a rain-fed non-trellising Monastrell, drip-irrigated trellising Monastrell Cabernet Sauvignon. studied fertiliser treatments without amendments (C), sheep/goat manure (SGM) distillery waste (DC). SGM DC applied at rate 4600 kg ha?1 (fresh weight, FW) 5000 FW, respectively. use improved yield, especially vineyards. Increased CO2 emissions coincident higher yields application (maximum = 1518 mg C-CO2 m?2 d?1). contrast, N2O emissions, mainly produced through nitrification, decreased plots showing production (minimum ?0.090 N2O-N all plots, CH4 fluxes negative during most experiment (?1.073?0.403 CH4-C d?1), indicating that these ecosystems can represent significant sink for atmospheric CH4. According our results, optimal management, considering properties, GHG mitigation together, variety Monastrell.