Nitrogen oxide and ozone concentrations, pollinator visitation frequencies and yield metrics of Brassica nigra in fumigation rings, Sonning, UK, 2018-2019 - Ryalls, J.M.W.; Bromfield, L.M.; Langford, B.; Mullinger, N.; Nemitz, E.; Pfrang, C.; Girling, R.D. (NERC Environmental Information Data Centre, 2021)