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Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 12095 X METRIBUZIN ADAMA,BAYER,UPL NA SWEET POTATO (01CD = TUBEROUS AND CORM VEGETABLES SUBGROUPS) NEED E/CS DATA ONLY (03C) Reasons for need: BROADLEAF WEEDS; THERE ARE NO HERBICIDES REGISTERED FOR BROADCAST APPLIC TO SWEET POTATO WITH POSTEMERGENCE ACTIVITY ON BROADLEAVES; POST CONTROL IS LIMITED TO HAND REMOVAL AND REPEATED CULTIVATION Efficacy/Crop Safety (E/CS) Data Required: E/CS Research Comments: Comments: THIS USE CAN BE COVERED WITH ONGOING METRIBUZIN/POTATO STUDY (PR# 10671); WILL BE REQUESTING A TOLERANCE FOR SUBGROUP 01C TUBEROUS AND CORM VEGETABLES, WHICH INCLUDES SWEET POTATO:12/16; TO BE COVERED BY PR# 10671:05/17; THE POTATO PR# 10671 STUDY (AND THE CROP SUBGROUP 1C TOLERANCE THAT WAS EXPECTED) THAT WAS TO COVER THIS FOLIAR BROADCAST USE PATTERN ON SWEET POTATO IS BEING CANCELED DUE TO ANALYTICAL ISSUES THAT CAN'T BE RESOLVED; A NEW PR# WILL BE CREATED FOR THAT REQUESTED USE ON POTATO, AND THUS THE STATUS OF THIS REQUESTED USE IN SWEET POTATO IS CHANGED FROM COVERED BY ANOTHER PROJECT TO RESEARCHABLE SO IT CAN BE PRIORITIZED:05/20; EPA HOLD:08/20; EPA REMOVED HOLD 2/23 & ADAMA NOW REQUESTS RESIDUE & E/CS:03/23/sb; E/CS covered under IS00383: 5/23 JPB;; YELLOW 08/23; ADAMA in US & BAYER in CANADA:06/24/sb; EPA GREEN:08/24; status updated to Need E/CS Data only as residue work is covered under existing PR 13027 metribuzin/potato:09/24/sb Field Res.Dir (FRD) Field ID# Field Data Track# Raw Data Data to MFG Performance Results & Comments Meyers, Stephen L (SOR) 15-MS-DMP RECD 4277.pdf TRICOR DF AT 4 AND 6 OZ PROD/A ALONE, OR 4 OZ + DEVRINOL APPLIED AT LAYBY FOLLOWING VALOR PRE-TP AND COMMAND POST-TP; GOOD CROP TOLERANCE AND WEED CONTROL; YIELD EQUAL TO HANDWEEDED CHECK. Meyers, Stephen L (SOR) 16-MS-DMP RECD 4278.pdf TRICOR DF AT 4 AND 6 OZ PROD/A ALONE, OR 4 OZ + DEVRINOL APPLIED AT LAYBY FOLLOWING VALOR PRE-TP AND COMMAND POST-TP; GOOD CROP TOLERANCE AND WEED CONTROL; YIELD EQUAL TO HANDWEEDED CHECK. RESULTS SIMILAR TO 2015 TRIAL. Meyers, Stephen L (SOR) 11-NC-DMP RECD 4279.pdf TWO TRIALS IN 2010 AND 2011. TRICOR DF AT 140 G AI/HA ALONE, OR 140 G + DUAL MAGNUM APPLIED 2 WEEKS POST-TP; SLIGHT INJURY, HIGHER THAN DUAL MAGNUM; GOOD WEED CONTROL; YIELD EQUAL TO DUAL MAGNUM.