Retour au profile Publications - ing. HCA (Bert) Rijk profile_core_publications Genetic progress in Dutch crop yields Bert Rijk, Martin van Ittersum, Jacques Withagen (2013) Field Crops Research The crop yield gap between organic and conventional agriculture Tomek de Ponti, Bert Rijk, Martin K. van Ittersum (2012) Agricultural Systems profile_other_publicationlists Wageningen University & Research