Tobacco black shank is a persistent and destructive pathogen in Georgia. The use of the Ph gene for resistance to Race 0 of the pathogen has led to the dominance of Race 1 of Phytophthora parasitica var. nicotianae (Ppn). There is no commercial resistance available and thus growers must rely on sanitation, rotation, and chemical control to manage the disease. The activity of mefenoxam (metalaxyl), the only recommended fungicide for tobacco black shank, is expensive and in our trials has not performed well. Several new fungicides specific for oomycetes are being evaluated in the vegetable market. Cyazofamid, ameloctradin and dimethylmorph, mandipropamid, flucopicolide, mefenoxam, fenamidone, and BS-EX were evaluated in an area heavily infested with Ppn. Only flucopicolide and BS-EX performed acceptably. Disease, % black shank at first harvest, ranged from 69% (nontreated control) to a low of 5.9% (flucopicolide) and 8.1% (BS-EX). Yields ranged from a low of 307 lb/A (nontreated) to a high of 2,199 lb/A (flucopicolide). These two new oomycete fungicides look very promising as materials that may be used to manage tobacco black shank in Georgia. (Reprinted with permission)