Residual N effects from livestock manure inputs to soils
Schroder, J.J. ; Bechini, L. ; Bittman, S. ; Brito, M.P. ; Delin, S. ; Lalor, S.T.J. ; Morvan, T. ; Chambers, B.J. ; Sakrabani, R. ; Sørensen, P.B. - \ 2013
Organic inputs including livestock manures provide nitrogen (N) to crops beyond the year of their application. This so-called residual N effect should be taken into account when making decisions on N rates for individual fields, but also when interpreting N response trials in preparation of recommendations. This paper addresses general principles of residual N effects, gives literature-based estimates of them, and reviews to which extent residual N effects are included in recommendations and regulations in selected countries.