For a vivid example of the resistance of grape varieties to various fungal diseases, including mildew, a five-point scale was introduced:
Wixii tusaale ah oo ka mid ah caabbinta noocyada canabka ah ee cudurada fangasta kala duwan, oo ay ka mid yihiin xagta uumi, miisaan shan dhibcood ah ayaa la soo saaray: