sweet-potato ring rot

NOUN
21 LETTERS · STARTS WITH S

sweet-potato ring rot is a valid 21-letter word worth 24 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1W4E1E1T1-0P3O1T1A1T1O1R1I1N1G2R1O1T1
1 + 4 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 =24 PTS
DOUBLE WORD → 48TRIPLE WORD → 72
MEANING

What does sweet-potato ring rot mean?

NOUN · 1 SENSE
1

Disease of sweet potatoes in which roots are girdled by rings of dry rot.