SUPPRESSION OF WHITE MOLD AND CYLINDROCLADIUM BLACK ROT IN PEANUT WITH FLUAZINAM

White mold (WM), caused by Athelia rolfsii (anamorph = Sclerotium rolf sii Sacc.), and cylindrocladium black rot (CBR), caused by Calonectria crotalariae [Loos] Bell & Sobers (anamorph = Cylindrocladium cro tala riae [Loos] Bell & Sobers), are the two most damaging soil-borne disea ses of peanut (Arachis hypogaea L.) in Florida, Levels of damage from either disease has exceeded 50% in some fields. Until more land become s available for crop rotation or until resistant cultivars are develop ed, the availability of one chemical that controls both WM and CBR is needed, The experimental fungicide, fluazinam, suppressed both WM and CBR in multiple tests in the field, Banded applications, over the cent er of the row; significantly suppressed WM in three tests from 1991-19 93 and CBR in two tests from 1992-1993, Significant yield increases oc curred in these tests. Fluazinam was highly inhibitory to mycelial gro wth of both fungi in acidified potato dextrose agar.