Field application of organic and inorganic fertilizers and manure Draft section for a Guidance Document Prepared by Tom Misselbrook, Shabtai Bittman, Claudia M. d. S. Cordovil, Bob Rees, Roger Sylvester-Bradley, Jørgen Olesen, Antonio Vallejo For discussion at the workshop on integrated sustainable nitrogen management, Brussels 30 September – 1 October 2019