Lub caij ntuj qhuav dej xyoo no tab tom yuav dhau mus ua qhov phem tshaj plaws Nkauj Qhuas Vajtswv tau sau tseg thiab qhov phem tshaj plaws hauv tebchaws Canada, raws li John Pomeroy, Canada tus thawj coj tshawb fawb txog dej thiab kev hloov pauv huab cua ntawm University of Saskatchewan. Nws tau dhau los ua phem tshaj li huab cua qhuav heev nyob rau xyoo 1961, nws hais.
Bonnie Allen, tus thawj coj thiab Theresa Kleem quote Pomeroy hauv tsab ntawv ceeb toom rau CBC Xov xwm raws li tau hais tias: "Nws yog ntxov kom hu nws qhov hnyav tshaj plaws [qhuav qhuav] nyob rau lub sijhawm no, tab sis nws yeej muaj tag nrho cov yam ntxwv ntawm kev coj mus rau qhov ntawd," Pomeroy hais.
Ib xyoo caum-qhuav qhuav tau tsoo Saskatchewan xyoo 1930, tab sis thaj chaw xws li sab qaum teb Alberta thiab sab qaum teb Saskatchewan tsis muaj kev cuam tshuam rau lub sijhawm ntawd, nws hais. Pomeroy tau hais tias "Tsis muaj thaj chaw zoo li tam sim no,"
Nws hais tias cov xwm txheej txuas ntxiv mus rau tebchaws Canada, nrog rau qhov qhuav heev nyob rau sab hnub poob ib nrab ntawm Tebchaws Meskas, thaj av Mediterranean, Kazakhstan thiab Russia, nrog rau ntau xyoo uas muaj huab cua qhuav hauv tebchaws Australia.
Lub neej yav tom ntej rau cov neeg ua liaj ua teb tseem tsis tau paub meej, nrog kev kwv yees yuav muaj huab cua qhuav heev nrog rau dej nyab.