?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Cuijpers%2C+W.J.M.&rft.aulast=Cuijpers&rft.aufirst=W.J.M.&rft.date=2005&rft.title=Balancing+fertilization+strategy+with+crop+requirements+in+organic+greenhouse+cultivation+of+sweet+pepper+&rft.genre=proceeding