Abstract
The rind hardness of the lowest internode enclosed by the uppermost leafsheath in which first instar Diatraea saccharalis (F.) larvae were found was determined for 8 commercial sugarcane varieties. A highly significant negative correlation ( r = –.97) was found between the internode first accessible to attack and mean percent internodes subsequently bored by D. saccharalis larvae: The possibility of using this technique to differentiate host resistance to D. saccharalis in sugarcane breeding programs is promising.
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