Narine, Samlal2008-12-052008-12-052008-12-05https://hdl.handle.net/2139/2059enPlease contact the West Indiana Division at the University of the West Indies,St.Augustine in order to view the full thesis. Contact: wimail@sta.uwi.eduXanthomonas campestris -- Trinidad and TobagoCrucifer black rot -- Trinidad and TobagoSoilborne plant pathogens -- Trinidad and TobagoThesis