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Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 13256 A CYMOXANIL CORTEVA STRAWBERRY (13-07G = LOW GROWING BERRY SUBGROUP) RESIDUE ON-GOING; E/CS DATA ON-GOING (03M ) Reasons for need: TO REDUCE SELECTION RESISTANCE TO MEFENOXAM Efficacy/Crop Safety (E/CS) Data Required: E/CS Research Comments: IN THE PERFORMANCE PROTOCOL FOR THE 2022 FL TRIALS: EVALUATING PRODUCT PERFORMANCE ON COMMERCIAL VARIETIES SUSCEPTIBLE TO PHYTOPHTHORA CROWN ROT AND LEATHER ROT; A FIELD TRIAL WILL EVALUATE CROWN ROT CONTROL DURING THE GROWING SEASON, AND A LAB TRIAL WILL EVALUATE LEATHER ROT CONTROL ON HARVESTED FRUIT; IN THE FIELD TRIAL PLANTS WILL BE INOCULATED WITH CROWN ROT, AND IN THE LAB TRIAL FRUIT WILL BE INOCULATED WITH LEATHER ROT; IN EACH TRIAL 1 FOLIAR USE RATE OF CYMOXANIL (CURZATE 60DF) WILL BE COMPARED WITH A STANDARD; SEE PROTOCOL FOR MORE DETAILS ON TEST SETUP REQUIREMENTS; FOR CROWN ROT EVALUATE DISEASE INCIDENCE, AND FOR LEATHER ROT ASSESS DISEASE INCIDENCE AND SEVERITY; THE 2023 PERFORMANCE PROTOCOL IS SIMILAR IN ALL ASPECTS TO THE 2022 FIELD AND LAB EVALUATIONS - SEE PROTOCOL FOR DETAILS Comments: E/CS DATA FROM CA NEEDED:07/21; EPA GREEN:08/21 Field Res.Dir (FRD) Field ID# Field Data Track# Raw Data Data to MFG Performance Results & Comments Holmes, Gerald (CA) 23-CAP10 Peres, N.A. 20-FL-DMP RECD 5078.pdf IN VIVO AND IN VITRO ASSAYS SHOWED THAT CYMOXANIL SUPPRESSED DISEASE DEVELOPMENT, DECREASED PLANT MORTALITY DUE TO CROWN ROT, AND REDUCED % FRUITS WITH LEATHER ROT SYMPTOMS. IT IS A PROMISING TOOL FOR AN INTEGRATED DISEASE MANAGEMENT PROGRAM ACROSS NURSERY AND FRUIT PRODUCTION SYSTEMS. Peres, N.A. 22-FLP10 RECD 5572.pdf 04/23 PHYTOPHTHORA CROWN ROT INCIDENCE WAS SIGNIFICANTLY REDUCED BY CURZATE 60 DF (CYMOXANIL) 5 OZ/A APPLIED THROUGH DRIP AND AS FOLIAR SPRAYS. SIMILARLY, NO LEATHER ROT INCIDENT WAS FOUND WHEN CURZATE (CYMOXANIL) 8 OZ/A APPLIED AS A FOLIAR SPRAY BUT UNTREATED CONTROL HAD 100% LEATHER ROT INCIDENCE. PHYTOTOXICITY WAS NOT OBSERVED ON ANY TREATMENT. Peres, N.A. 23-FLP07 RECD 5773.pdf 06/24 5 oz of Curzate 60 DF (Cymoxanil) applied 3 times through drip at 21-day interval to strawberry cultivar “Florida 127” showed significant control of Phytophthora crown rot incidence and AUDPC compared to non-treated inoculated control. Also, one application of 5 oz/A Curzate 60 DF treated harvested strawberry fruits had no leather rot incidence but non-treated control showed 100% disease incidence. No signs of phytotoxicity were observed.