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46th TWC, Tob. Work. Conf., 2014, abstr. 38

Presidio – A new fungicide for black shank and blue mold control in tobacco

CRANMER J.R.; SMITH J.; HOLMES G.; SYPHRIT C.
Valent USA Corporation, 1135 Kildaire Farm Road, Suite 200, Cary, NC 27511, USA

Presidio is a new fungicide being developed by Valent U.S.A. Corporation for control of black shank (Phytophthora nicotianae) and blue mold (Peronospora tabacina) in tobacco. Presidio (fluopicolide) belongs to the chemical group pyridinylmethyl-benzamides with a mode of action code of B5 and a Fungicide Resistance Action Committee (FRAC) Code of 43 (sole member). Presidio is systemic when soil applied and locally systemic when foliar applied. Use rate for black shank and blue mold control will be 0.125 lb ai/A. Presidio can be applied in the transplant water, at first cultivation, or at layby for black shank control. A maximum of two applications can be made, but back-to-back applications are restricted. Presidio can be applied via ground or aerial application for blue mold control. A maximum of two applications can be made with a minimum interval of seven days between applications. For blue mold control, Presidio must be tank mixed with a labeled rate of another fungicide, with a different mode of action that is active on the target pathogen. No tank mix partner is required for black shank control. No tobacco injury has been observed in any university trial to date when Presidio at 0.125 or 0.250 lb ai/A was applied in the transplant water, at first cultivation, and/or at layby or when applied at 0.125 lb ai/A foliar. In university trials, Presidio gave black shank control that was equal to Ridomil Gold. Presidio gave blue mold control that equal to Quadris. Valent anticipates a tobacco registration for Presidio in April 2015. (Reprinted with permission)