Orondis (oxathiapiproplin, U15) targets the oxysterol binding protein that is a part of the cell wall. The active ingredient inhibits growth of the fungus as well as sporangia production and zoospore germination. Orondis has a low solubility (i.e., locally systemic), is translaminar; and will protect new growth. Orondis is currently sold as a co-pack with either mefenoxam (Orondis Gold), chlorothalonil (Orondis Opti), or mandipropamid (Orondis Ultra). Growers will be required to tank mix Orondis with its partner during 2016 season. In 2017, the partners will be formulated together. Orondis has different use rates and restricted seasonal use. The rates for Orondis and it counterpart will differ by crop, pathogen, and desired use (drip vs. foliar). Unfortunately, because of its registration date, Orondis was not included the 2016 Mid-Atlantic Commercial Vegetable Production Guide.
Orondis Gold 200 (oxathiapiprolin [OXTP] + mefenoxam, U15 + 4) — Growers using Orondis Gold will need refer to the Orondis Gold 200 (OXTP) label and the Orondis Gold B (mefenoxam) label.
Orondis Gold 200 targets damping-off caused pythium and/or phytophthora in cucurbits and fruiting vegetables (pepper, tomatoes, eggplant), and leafy vegetables (excluding brassica’s).
