4 one or more sharp eyespot lesions girdling in total less than or equal to 2/5 of the stem circumference, with the stem remaining un-softened attribute One or more sharp eyespot lesions on lower sheaths but no symptoms on the stem 1 7 one or more sharp eyespot lesions girdling in total less than or equal to 5/5 of the stem circumference, with the stem remaining un-softened 3 one or more sharp eyespot lesions girdling in total less than or equal to 1/5 of the stem circumference, with the stem remaining un-softened head prematurely ripened (whitehead) or plant collapsed with sharp eyespot lesions on the stem, or shoot killed as the ear emerges from the sheath with sharp eyespot lesions on the shoot 9 2 one or more sharp eyespot lesions on upper (as well as lower) sheaths but no symptoms on the stem acronym stem softened with sharp eyespot lesions on the stem 8 scale_of 6 one or more sharp eyespot lesions girdling in total less than or equal to 4/5 of the stem circumference, with the stem remaining un-softened No symptom of sharp eyespot 0 variable_of entity one or more sharp eyespot lesions girdling in total less than or equal to 3/5 of the stem circumference, with the stem remaining un-softened 5 method_of 0-9 RCERE scale