Emisiones procedentes de la fertilización de pastos británicos. Factores de emisión y estrategias de reducción

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
* salcalsa@upvnet.upv.es
.
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: