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PrnumPesticide(MFG)Commodity (Crop Group)Category (Code)EPA Status
13723
+
PYROXASULFONE
KICHEM
CARROT (01AB = ROOT VEGETABLES SUBGROUPS) POTENTIAL: E/CS DATA BEFORE APPROVAL FOR RESIDUE STUDY (02)
Reasons for need: WEEDS. Annual grassweeds, Broadleaf weeds, Weeds are a persistent problem for carrot production as carrots are poor competitors. Herbicides are essential for carrot production as high-density planting limits the use of mechanical options. Therefore, carrot growers have long relied on herbicides like metam, trifluralin, and linuron. New regulatory restrictions along with loss of crop tolerances and costly environmental monitoring studies may lead to the loss of some good herbicides:08/23; NY/Carrots are in critical need of novel weed control options, particularly with the evolution of linuron resistance in pigweed species:09/23
Efficacy/Crop Safety (E/CS) Data Required:
E/CS Research Comments: no early season phytotoxicity evaluation data collected in 2023 trial; vigor after the second application looks acceptable, but significant crop phytotoxicity was observed from the late application of both rates; original supporting data did not include sequential applications of treatments, though sequential applications are desired. RBB 8/23/sb
Comments: Data under XH498 (rec'd 2/2014) is variable and was converted with this new request. Original supporting data did not include sequential applications of treatments, though sequential applications are desired, and a more complete report has been requested. Requester may also desire a chemigation option for preemergence application.08/23/rbb/sb; Category changed per MFG to Potential, MFG Requires E/CS Data Before Residue Study, 09/23 JPB;
Field Res.Dir (FRD)Field ID#Field DataTrack#Raw DataData to MFGPerformance Results & Comments
Zandstra, Dr. Bernard H. 13-MI-DMP RECD 3714.pdf 0.09 AND 0.18 LB AI/A PRE ON HOUGHTON MUCK SOIL; GOOD CROP TOLERANCE
Zandstra, Dr. Bernard H. 13-MI-DMP RECD 3715.pdf 0.033 LB AI/A POST; MODERATE INJURY, YIELD LESS THAN PROMETRYN.
Bellinder, Dr. Robin 13-NY-DMP RECD 3730.pdf 0.1 LB AI/A PRE ON MUCK SOIL; GOOD CROP TOLERANCE
Bellinder, Dr. Robin 13-NY-DMP RECD 3731.pdf 0.08 LB AI/A PRE ON HOWARD GRAVEL LOAM SOIL; SEVERE STUNTING AND HIGH YIELD LOSS
Zandstra, Dr. Bernard H. 15-MI-DMP RECD 4098.pdf 0.089, 0.111, 0.159, 0.179, 0.223 AND 0.267 LB AI/A PO1 (3-4 LF) FOLLOWING LINURON PRE ON HOUGHTON MUCK SOIL; GOOD CROP TOLERANCE.
Zandstra, Dr. Bernard H. 17-MI-DMP RECD 4503.pdf 0.133 AND 0.267 LB AI/A PRE ON HOUGHTON MUCK SOIL; GOOD CROP TOLERANCE.
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