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Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 12611 B QUINCLORAC ADAMA,ALBAGH GRAPE (13-07F = SMALL FRUIT VINE CLIMBING SUBGROUP, EXCEPT FUZZY KIWIFRUIT) RESEARCHABLE, ONLY RESIDUE DATA NEEDED (03) Reasons for need: FIELD BINDWEED, HEDGE BINDWEED, CANADA THISTLE, CRABGRASS, BARNYARDGRASS, FOXTAIL; OTHER POST HERBICIDES ARE NOT EFFECTIVE AGAINST THESE WEEDS; PER NJ ME-TOO REQUEST, OPTIONS FOR CONTROLLING CLOVER AND BINDWEED IN GRAPE ARE NON-EXISTENT, AND QUINCLORAC WOULD BE A GOOD FIT FOR CONTROLLING THESE INCREASINGLY TROUBLESOME WEEDS; PER NY ME-TOO REQUEST: CONTROL OF PERENNIAL VINING WEEDS LIKE BINDWEED IS DIFFICULT DUE TO LIMITED HERBICIDE OPTIONS Efficacy/Crop Safety (E/CS) Data Required: E/CS Research Comments: IN THE PERFORMANCE PROTOCOLS FOR 2021/2022 TRIALS, EACH TRIAL LASTS TWO YEARS, WITH THE SAME TREATMENTS APPLIED TO THE SAME PLOTS EACH YEAR; TESTING 2 RATES OF QUINSTAR 4L (0.375 AND 0.75 LB AI/A), IN AT LEAST 10 GPA, COMBINED WITH A CROP OIL CONCENTRATE (COC) AT 2 PT/A OR A METHYLATED SEED OIL (MSO) AT 1.5 PT/A; TREATMENTS WILL BE APPLIED AS BANDED SPRAYS TO THE VINEYARD FLOOR (SEE PROTOCOL FOR MORE DETAILED APPLIC REQUIREMENTS); EVALUATE CROP INJURY AND VIGOR, WEED CONTROL EFFICACY AND CROP YIELD Comments: NO EXPORT MARKETS NOTED:08/18; EPA GREEN:09/19; MFG CHANGED FROM UNDER EVAL TO POTENTIAL AT FUW:09/24/19; PROMISING PERFORMANCE DATA OBSERVED FROM YEAR 1 AND CURRENTLY WE ARE IN YEAR 2 OF THE STUDY:08/22; STATUS UPDATED TO RESEARCHABLE, E/CS ON-GOING; RESIDUE DATA NEEDED:10/22; EPA GREEN: 08/23; mfg updated status at the 2023 FUW from researchable, e/cs on-going, residue data needed, to Researchable, only Residue Data Needed:09/23/sb Field Res.Dir (FRD) Field ID# Field Data Track# Raw Data Data to MFG Performance Results & Comments Zandstra, Dr. Bernard H. 18-MI-DMP RECD 4591.pdf 11/21 QUINSTAR AT 0.25 LB AI/A PO1; EXCELLENT CROP TOLERANCE; GOOD FIELD BINDWEED CONTROL. Besancon, Thierry 21-NJP02 RECD 5277.pdf YEAR 1 OF 2. QUINSTAR 4L APPLIED AS BANDED SPRAYER ON BOTH SIDES OF VINES AT 12.6 OR 25.2 FL OZ/A TWO OR THREE TIMES PER YEAR. POOR BINEWEED CONTROL FROM QUINCLORAC TREATMENTS. QUINCLORAC TREATMENTS CAUSED SLIGHT BUT PERSISTENT CHLOROSIS AND LEAF CUPPING OF GRAPE. FRUIT YIELD AND WEIGHT OF PRUNED SHOOTS THE FOLLOWING SPRING FROM QUINCLORAC NOT DIFFERENT FROM THE WEED-FREE CHECK. Besancon, Thierry 22-NJP03 RECD 5595.pdf 07/23 YEAR 2 OF 2. QUINSTAR 4L BANDED TWO OR THREE TIMES AT 12.6 OZ OR 25.2 OZ/A (0.375 OR 0.75 LB AI/A) ALONG ‘CAYUGA’ GRAPES GROWN IN A WOODSTOWN SANDY LOAM. NO FOLIAR NECROSIS OR CROP STUNTING OCCURRED AT ANY EVALUATION. MID-SEASON EVALUATIONS SHOWED THAT FALL 2021 APPLICATION CONTRIBUTED TO INCREASED BINDWEED CONTROL, PARTICULARLY WITH THE HIGH RATE. FALL 2022 APPLICATIONS HELPED MAINTAIN HIGHER BINDWED CONTROL COMPARED TO IN-SEASON APPLICATIONS ONLY. INJURY TO GRAPE SUCKERS (CHLOROSIS, LEAF CUPPING AND LEAF STRAPPING) WAS OBSERVED FROM QUINCLORAC AND WAS SIGNIFICANTLY GREATER FROM THE HIGH RATE AFTER THE SECOND IN-SEASON APPLICATION, COMPARED TO WEED-FREE. THESE SYMPTOMS DID NOT EXCEED 9% AT ANY EVALUATION. 2022 FRUIT YIELD AND FEBRUARY 2023 PRUNING WEIGHTS WERE NOT SIGNIFICANTLY IMPACTED BY QUINCLORAC. JUNE 2023 VISUAL EVALUATIONS SHOWED ALL QUINCLORAC TREATMENTS SIGNIFICANTLY STUNTED NEW GRAPE SPURS AND THE HIGH RATE, REGARDLESS OF NUMBER OF APPLICATIONS, CAUSED SIGNIFICANT CORDON DIEBACK. Hanson, Brad 22-CAP02 RECD 5607.pdf 07/23 YEAR 2 OF 2 WITH TREATMENTS APPLIED TO THE SAME PLOTS BOTH YEARS. QUINSTAR 4L BANDED TWO OR THREE TIMES AT 12.6 OZ OR 25.2 OZ/A (0.375 OR 0.75 LB AI/A) ALONG ‘GRENACHE’ GRAPES GROWN IN A YOLO SILT LOAM. AS WITH YEAR 1, NO CROP INJURY OBSERVED FROM ANY TREATMENT IN YEAR 2. QUINCLORAC TREATMENTS DID NOT IMPACT 2022 FRUIT YIELD AND SPRING 2023 RATINGS SHOWED NO IMPACT ON CROP VIGOR FROM THE FALL 2022 QUINCLORAC APPLICATION. Moretti, Marcelo 22-ORP07 RECD 5610.pdf 08/23 YEAR 2 OF 2. REPORT INCLUDES DATA FROM BOTH YEARS. QUINSTAR 4L APPLIED AS BANDED SPRAYER ON BOTH SIDES OF VINES AT 12.6 OR 25.2 FL OZ/A TWO OR THREE TIMES PER YEAR. NO CROP INJURY OR YIELD REDUCTIONS OBSERVED. REGARDLESS OF RATE OR TIMINGS, QUINCLORAC DID NOT CONTROL GRAPE SUCKERS. Moretti, Marcelo 21-ORP08 RECD 5158.pdf 11/21 YEAR 1 OF 2. QUINSTAR 4L APPLIED AS BANDED SPRAYER ON BOTH SIDES OF VINES AT 12.6 OR 25.2 FL OZ/A TWO OR THREE TIMES PER YEAR. NO WEED PRESSURE TO EVALUATE. NO CROP INJURY OR YIELD REDUCTIONS OBSERVED Sosnoskie, Lynn 21-NYP05 RECD 5171.pdf 11/21 YEAR 1 OF 2. QUINSTAR 4L BANDED TWO OR THREE TIMES AT 12.6 OZ OR 25.2 OZ/A (0.375 OR 0.75 LB AI/A) ALONG GRAPES GROWN IN A CHENANGO GRAVEL LOAM. NO CROP INJURY 3 WEEKS AFTER PRE-BLOOM TIMING. SIGNIFICANT (≤21%) INJURY SEEN FOR REMANINDER OF CROPPING SEASON. EARLY WEED CONTROL WAS NOT EXCEPTIONAL, BUT WAS SIGNIFICANTLY DIFFERENT FROM UTC. NO OBVIOUS RATE RESPONSE OBSERVED FOR INJURY OR WEED CONTROL. NO YIELD IMPACT OBSERVED. Chaudhari, Dr. Sushila 21-MIP07 RECD 5174.pdf 12/21 YEAR 1 OF 2. QUINSTAR 4L BANDED TWO OR THREE TIMES AT 12.6 OZ OR 25.2 OZ/A (0.375 OR 0.75 LB AI/A) ALONG GRAPES GROWN IN A CAPAC LOAM. THIRD APPLICATION WAS POST HARVEST. SIGNIFICANT CROP INJURY FROM QUINCLORAC. INJURY ≤ 21% FROM FIRST APPLICATION WITH NO APPARENT RATE RESPONSE. APPARENT RATE RESPONSE AFTER SECOND APPLICATION WITH LEVELS AS HIGH AS 32% 4 WEEKS AFTER SECOND APPLICATION. VERY GOOD FIELD BINDWEED CONTROL AT AND AFTER SECOND APPLICATION WITH NO OBVIOUS RATE RESPONSE. NO YIELD IMPACTS OBSERVED FROM QUINCLORAC. Hanson, Brad 21-CAP14 RECD 5185.pdf 12/21 YEAR 1 OF 2. QUINSTAR 4L BANDED TWO OR THREE TIMES AT 12.6 OZ OR 25.2 OZ/A (0.375 OR 0.75 LB AI/A) ALONG WINE GRAPES GROWN IN A YOLO SILT LOAM. NO CROP INJURY AND NO YIELD REDUCTION FROM QUINCLORAC. Chaudhari, Dr. Sushila 22-MIP04 RECD 5325.pdf 11/22 YEAR 2 OF 2. QUINSTAR 4L BANDED TWO OR THREE TIMES AT 12.6 OZ OR 25.2 OZ/A (0.375 OR 0.75 LB AI/A) ALONG GRAPES GROWN IN A CAPAC LOAM. THIRD APPLICATION WAS POST HARVEST. COMPARED TO NONTREATED, EARLY SEASON PRUNING WEIGHTS NUMERICALLY LOWER WITH HIGH RATE APPLIED TWICE AND BOTH RATES APPLIED THREE TIMES IN YEAR 1. SOME SIGNIFICANTLY CROP INJURY (≤ 14%) EXPRESSED AS LEAF CUPPING SIX DAYS AFTER FIRST APPLICATION (DAA-1). LEAF CUPPING FROM QUINCLORAC RANGED FROM 6 TO 23% AT 6 DAA-2. EXCELLENT FIELD BINDWEED CONTROL AND GOOD-EXCELLENT CONTROL OF OTHER EVALUATED WEED SPECIES 26 DAA-2. FRUIT NUMBER AND WEIGHT IN PLOTS THAT RECEIVED THREE APPLICATONS IN YEAR 1 NOTICEABLY, AND SOMETIMES SIGNIFICANTLY, LOWER THAN UNTREATED Sosnoskie, Lynn 22-NYP02 RECD 5564.pdf 04/23 YEAR 2 OF 2. REPORT SUMMARIZED BOTH YEARS. QUINSTAR 4L BANDED TWO OR THREE TIMES AT 12.6 OZ OR 25.2 OZ/A (0.375 OR 0.75 LB AI/A) ALONG GRAPES GROWN IN A CHENANGO GRAVEL LOAM. DUE TO SPECTRUM OF WEEDS, QUINCLORAC TREATMENS DID NOT SIGNIFICANTLY REDUCE WEED COVER IN 2022. PRIOR TO FIRST 2022 APPLICATION, SIGNIFICANT LEAF STRAPPING ON YOUNG SUCKERS SEEN FROM BOTH RATES APPLIED 3 TIMES IN 2021 AND TWO APPLICATIONS OF THE HIGH RATE IN 2021. SIGNIFICANT SEASON-LONG FOLIAR INJURY WHEN THE HIGH RATE WAS APPLIED TWICE IN 2022 AFTER THREE 2021 APPLICATIONS. LOW RATE APPLIED FIVE TOTAL TIMES ALSO HAD NUMERICALLY HIGHER INJURY THAN WHEN NO FALL 2021 APPLICATION WAS MADE. YIELD IN 2022 FROM QUINCLORAC WAS NOT SIGNIFICANTLY DIFFERENT FROM UNTREATED BUT FIVE TOTAL APPLICATIONS AT THE HIGH RATE RESULTED IN 52 AND 37% REDUCTIONS IN TOTAL BERRY WEIGHT AND BERRY WEIGHT PER VINE, RESPECTIVELY