Griin haus ọkụkụ na-mmiri site n'itinye mmiri na media n'elu site ntapu akpa ma ọ bụ etere, site n'aka eji a sooks, efefe agbapụta na booms ma ọ bụ site n'itinye mmiri site na ala nke akpa site subirrigation, ma ọ bụ site na iji a Nchikota ndị a nnyefe na usoro. Efefe agbapụta na n'aka atọ nwere ọchịchọ "imefusị" mmiri na-mmiri nke nwa ehi, nke enwekwu ike ọrịa na mmerụ ahụ. Ntapu na subirrigation usoro ndị kasị oru oma na-enye ukwuu achịkwa ego nke mmiri na etinyere ya. Ọzọkwa, ebe ọ bụ na akwụkwọ adịghị ghọọ mmiri e nwere a belatara ike ọrịa na mmerụ ahụ.
