Kubwezera ndi chomera cha pachaka cha banja la Cruciferous, mbewu yomwe yalimidwa kwa zaka zopitirira zisanu ndi chimodzi. Kukonzekera dothi ndi feteleza kuti apulumuke Nkhanza zimakula bwino pa nthaka yakuda ndi mankhwala osakaniza pang'ono. Nthaka muzolowera ziyenera kutsukidwa bwino namsongole, monga momwe chitukuko chimakhalira, mbande zimaletsedwa mothandizidwa ndi namsongole.
