Fertigation
www.fertigationcenter.com

European Turfgrass Society
http://www.turfgrasssociety.eu

Substrate Industry
http://www.rhp.nl

Fertilizer Associations
EFMA: http://www.efma.org
FAO: http://www.fertilizer.org

Major tradefairs with COMPO EXPERT participation:
IPM Essen: http://www.ipm-messe.de
GaLaBau Nuernberg: http://www.galabau.info-web.de/en