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Prnum Pesticide(MFG) Commodity (Crop Group) Category (Code) EPA Status 13199 H S-METOLACHLOR/METOLACHLOR SYNGEN,UPL NA PUMPKIN (09B = SQUASH/CUCUMBER SUBGROUP) USE REGISTERED, NOT NATIONALLY (24A) Reasons for need: THERE ARE NO POSTEMERGENCE HERBICIDES LABELED FOR PUMPKINS TO CONTROL BROADLEAF WEED SPECIES. NEED TO FIND WAYS TO EXTEND THE RESIDUAL CONTROL OF OUR PREEMERGENCE HERBICIDES AND A DELAYED PRE APPLICATION IS ONE METHOD; FOR WEED SPECIES WITH PROLONGED GERMINATION PERIOD SUCH AS PALMER AMARANTH AND EASTERN BLACK NIGHTSHADE: 01/21; NY-S-met would help extend the suppression of several problematic weed species such as pigweends and nightshades:09/24; Efficacy/Crop Safety (E/CS) Data Required: E/CS Research Comments: Comments: REQUESTOR UNCERTAIN ABOUT EXPORT MARKETS; TOLERANCE ESTABLISHED; ONLY CS DATA IS REQUIRED; MFG IS WILLING TO PURSUE 24C LABELED IN STATES WITH SATISFACTORY CS DATA: 02/21; ME TOO REQUEST KURT VOLLMER, U OF MD, 02/16/21; LAST STATUS CHANGE: 06/22; Recent EPOST broadcast trials coordinated by IR:4 and Syngenta in multiple states may lead to use pattern flexibility per MFG: 5/23, JPB; SYNGENTA ADVVISED TO UPDATE '"TOLERANCE EST" TO TOLERANCE ESTABLISHED, E/CS ONLY DATA NEEDED TO ADD CROP TO LABEL":06/24/sb; e/cs data forwarded to Syngenta for review:09/24/sb; Status changed to "Use Registered, Not Nationally" per MFG request 01/25 ds; Field Res.Dir (FRD) Field ID# Field Data Track# Raw Data Data to MFG Performance Results & Comments VanGessel, M. 17-DE-DMP RECD 5040.pdf DUAL MAGNUM AT 1.19 LB AI/A POST 3 OR 4 WAP; NO SIGNIFICANT INJURY AND YIELD REDUCTION. VanGessel, M. 18-DE-DMP RECD 5041.pdf TRIAL ID: PMPKN 4-18. DUAL MAGNUM AT 0.714 AND 1.19 LB AI/A POST 3, 4 OR 5 WAP FOLLOWING CURBIT PRE; NO SIGNIFICANT INJURY AND YIELD REDUCTION. VanGessel, M. 18-DE-DMP RECD 5042.pdf TRIAL ID: PMPKN 5A-18. DUAL MAGNUM AT 0.714 LB AI/A POST 3, 6 AND 9 WAP, OR WITH 0.476 LB AI/A APPLIED ONCE AT VARIOUS TIMES 3, 6, OR 9 WAP FOLLOWING CURBIT PRE; NO SIGNIFICANT INJURY AND YIELD REDUCTION. VanGessel, M. 18-DE-DMP RECD 5043.pdf TRIAL ID: PMPKN 1-18 AND 2-18. TWO GREENHOUSE TRIALS. DUAL MAGNUM AT 0.714, 1.43 AND 2.86 LB AI/A POST (2-3 LF); NO TO VERY MINOR INJURY ON 6 VARIETIES TESTED. NO SIGNIFICANT DIFFERENCES IN CROP HEIGHT AND DRY WEIGHT. VanGessel, M. 18-DE-DMP RECD 5044.pdf TRIAL ID: PMPKN 3-18. GREENHOUSE TRIAL. DUAL MAGNUM AND DUAL II MAGNUM AT 1.43, 2.87 AND 5.76 LB AI/A POST (2-3 LF); NO INJURY WITH 2 LOWER RATES, MINOR WITH HIGHEST RATE. NO SIGNIFICANT DIFFERENCES IN CROP HEIGHT AND DRY WEIGHT. Vollmer, Kurt 19-DE-DMP RECD 5045.pdf TRIAL ID: PMPKN 4-19. DUAL MAGNUM AT 0.714, 1.19 AND 1.43 LB AI/A POST 2, 3 OR 4 WAP FOLLOWING CURBIT PRE; NO INJURY AND YIELD REDUCTION. Vollmer, Kurt 19-DE-DMP RECD 5046.pdf TRIAL ID: PMPKN 5-19. DUAL MAGNUM AT 0.64, 0.714 AND 1.43 LB AI/A POST 2 AND 4 WAP FOLLOWING CURBIT PRE; YIELD COMPARABLE TO CURBIT PRE. Vollmer, Kurt 20-DE-DMP RECD 5047.pdf THREE TRIALS IN MARYLAND AND DELAWARE. DUAL MAGNUM AT 1.75 AND 1.5 LB AI/A POST 2 OR 4 WAP FOLLOWING CURBIT PRE; NO INJURY. YIELD HIGHER THAN UNTREATED CHECK.