Triticonazole Crop Safety – 2023

Boxwood plant in the ground
Boxwood: Cristi Palmer
Research Summary Abstract

Triticonazole was registered as Trinity 2SC in the United States in 2007 as a turf fungicide. Trinity SC was expanded to diseases of environmental horticulture diseases in 2013. Because triticonazole is in the triazole class, it could cause symptoms similar to plant growth regulators and testing was warranted on additional herbaceous and woody perennial species. Between 2010 and 2017, the IR-4 Project completed 187 trials on 42 plant genera or species examining phytotoxicity related to foliar applications of Trinity 2SC. In this report, 32 species or genera exhibited minimal or no injury after foliar treatments of Trinity 2SC (triticonazole) at 6, 12 and 24 fl oz per 100gal; 20 of these are already on the label. We recommend that the following 12 species or genera be added to the current label: Alyssum sp, Buxus sp., Chaemerops humilis, Cornus sp., Dahlia sp., Gaillardia x grandiflora, Hedera helix, Ilex sp., Lantana sp., Pseudotsuga menziesii, Osteospermum sp. and Salvia officinalis.

Link to Summary: Triticonazole Crop Safety Summary