Rampersad, Sephra Nalini2009-02-052009-02-052009-02-05https://hdl.handle.net/2139/3523enPlease 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.eduTomatoes -- Diseases and pests -- Trinidad and TobagoSweetpotato whitefly -- Control -- Trinidad and TobagoThesis