Ọnụ ụzọ ọkụ osisi dị ọcha, enweghị ncha, ọnya na akara hama. A na-eji ihe na-ejuputa na ọnụ ụzọ ọkụ woodiness avirulent gburugburu ebe obibi ihe mkpuchi ọkụ ọkụ, ọ bụghị nanị na-ebelata mmepụta ihe, kamakwa ọ ghọtara ike nchekwa na nchekwa gburugburu ebe obibi, na-arụ ọrụ nke ichebe gburugburu ebe obibi.