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Calvet et al. 2019 - N2O grasslands
- 1. Salvador Calvet 1*; Anne Bhogal2; David Chadwick3; Karen McGeough4; Tom Misselbrook5; Robert Rees6; Rachel Thorman2, Catherine Watson4; John Williams2; Keith Smith7, Laura Cardenas5 1Universitat Politècnica de València. Institute of Animal Science and Technology. Camino de Vera s.n. 46022 Valencia, Spain 2ADAS Boxworth, Battlegate Road, Boxworth, Cambridge, CB23 4NN, UK 3School of Natural Sciences, Bangor University, Bangor LL57 2UW, UK 4Agri-Food and Biosciences Institute, 18a, Newforge Lane, BT9 5PX, Belfast, UK 5Rothamsted Research, Okehampton, Devon, EX20 2SB, UK 6Scotland’s Rural College (SRUC), King’s Buildings, West Mains Road, Edinburgh 7School of Geosciences, University of Edinburgh, Crew Building, Alexander Crum Brown Road, Edinburgh EH9 3FF, and Pomeroy Villas, Totnes, TQ9 5BE, Devon, UK * [email protected] . BackgroundBackground Nitrogen use efficiency and nitrous oxide emissions from five UK fertilised grasslands MethodsMethods ResultsResults ConclusionsConclusions DEFRA, Department of Agriculture, Environment and Rural Affairs in Northern Ireland, InveN2Ory project (AC0116), Spanish Ministry of Education, Culture and Sports AcknowledgementsAcknowledgements Average N2O EF = 1,12% N applied Urea applications reduced N2O Room to improve nitrogen use efficiency 5 grassland sites 10 treatments 3 repetitions 1 year 2012-2014 12,300 measurements Joint experimental protocol, GHG platform project, UK AN400 AN320 AN240 AN160 AN80 Control AN 6Split AN+DCD Urea U+DCD Increasing rate Fertiliser strategy (320 kg N/ha) 4 (6) applications (320=70+70+100+80) 3-4 cuts Yield and N offtake N2O EMISSION (closed static chamber) Soil WFPS Soil MINERAL NITROGEN CLIMATE (air temperature and rainfall) Cardenas, L. M., et al. "Nitrogen use efficiency and nitrous oxide emissions from five UK fertilised grasslands." Science of The Total Environment 661 (2019): 696-710. Published 2019: