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PR#PriorityPesticide(MFG)Commodity (Crop Group)Project Status
13184 B CLETHODIM ( ADAMA,ARYSTA,VALENT ) RICE ( 15-16 = CEREAL GRAINS AND CEREAL GRAINS FORAGE/FODDER/STRAW GROUPS ) RESEARCHABLE, ONLY RESIDUE DATA NEEDED

Reduced Risk Status:
IPM Compatibility: PER REQUESTER: VERY GOOD IPM FIT; BEST MANAGEMENT PRACTICES WERE DEVELOPED WITH NO HERBICIDE LISTED FOR SPOT TREATMENT OF WEEDY RICE IN THE FIELD; ABOUT 500,000 ACRES OF RICE ARE GROWN IN CALIFORNIA; TOTAL ACREAGE INFESTED WITH WEEDY RICE IS 14,000-15,000 ACRES BY FIELD SIZE; OF THE INFESTED ACREAGE, 2,000 ACRES HAVE WEEDY RICE; THE INFORMATION WAS OBTAINED FROM GROWER SURVEYS OF PREVIOUSLY INFESTED FIELDS; POLLINATORS ARE NOT AN ISSUE BECAUSE RICE IS SELF POLLINATING; THE MANAGED BEE HIVES IN SURROUNDING CROPS HAVE BEEN MOVED APPROXIMATELY 3 MONTHS BEFORE THE FIRST CLETHODIM APPLIC WOULD TAKE PLACE; THE BENEFICIALS FOUND IN RICE FIELDS OFTEN INHABIT THE LEVEES SURROUNDING RICE CHECKS; WEED RICE HAS BEEN FOUND WELL INTO THE CHECK AND NOT ON THE LEVEES; CLETHODIM HAS LOW TOXICITY TO BENEFICIAL ORGANISMS AND IS SLIGHTLY TOXIC TO NON-TARGET ORGANISMS; FROM THE LABEL: ENVIRONMENTAL HAZARDS DO NOT APPLY DIRECTLY TO WATER, OR TO AREAS WHERE SURFACE WATER IS PRESENT OR TO INTERTIDAL AREAS BELOW THE MEAN HIGH-WATER MARK; DO NOT APPLY WHERE RUNOFF IS LIKELY TO OCCUR; DO NOT APPLY WHERE WEATHER CONDITIONS FAVOR DRIFT FROM AREAS TREATED; DO NOT CONTAMINATE WATER WHEN DISPOSING OF EQUIPMENT WASH WATER OR RINSATE; SPOT TREATMENT CAN BE BY GROUND RIG IN FIELDS WITH LARGE SPOTS OF WEEDY RICE WELL INTO THE RICE CHECK; MOST APPLIC WILL BE WITH EITHER A WAND OR BACKPACK SPRAYER TO SPECIFICALLY TARGET THE WEEDY RICE; THE CA CROP IMPROVEMENT ASSOC STAFF, FARM ADVISORS, PEST CONTROL ADVISERS, COUNTY AGRICULTURAL COMMISSIONER STAFF AND FARMERS MONITOR FOR THE PEST THROUGHOUT THE SEASON; CLETHODIM IS KNOWN TO BE PERSISTENT IN AQUATIC ENVIRONMENTS AND BREAKS DOWN QUICKLY IN UV LIGHT; RAPIDLY DEGRADED ON LEAF SURFACES BY AN ACID-CATALYSED REACTION AND PHOTOLYSIS; THE REMAINING CLETHODIM RAPIDLY PENETRATES THE CUTICLE AND ENTERS THE PLANT; NO RUN OFF OR DRIFT SHOULD OCCUR BASED ON THE APPLIC METHODS FOR SPOT TREATMENT:11/20
Reasons for need: RED RICE (ORYZA SATIVA) KNOWN AS WEEDY RICE BECAUSE 7 BIOTYPES HAVE BEEN IDENTIFIED; NO HERBICIDES REGISTERED ON RICE ARE EFFECTIVE IN CONTROL; ABOUT 2,000 ACRES ARE INFESTED; HOWEVER, THE WEEDY RICE HAS POTENTIAL TO BECOME A SIGNIFICANT PEST, DECREASING YIELD AND QUALITY; BEST MANAGEMENT PRACTICES WERE DEVELOPED WITH NO HERBICIDE LISTED OTHER THAN GLYPHOSATE FOR PREPLANT APPLIC; NO GLYPHOSATE APPLIC FOR FOLIAR USE OR SPOT TREATMENT PER LABEL CONDITIONS; PER ME TOO, ARKANSAS CURRENTLY HAS APPROXIMATELY 15-20% OF 1.5 MILLION RICE ACRES INFESTED WITH WEEDY RICE. OF THAT, 50% OF THE WEEDY RICE IS RESISTANT TO ALS HERBICIDES.:03/21;
Requesting State(s): AR:Barber, T ; CA:Firoved, R* ; LA:Webster, E ;
PCR Use Pattern: USE THE SELECTMAX WITH INSIDE TECHNOLOGY PRODUCT; MAKE 1 FOLIAR APPLIC OF 2.6% AI (16 OZ/A OF 0.97 LB/GAL CLETHODIM); VIA GROUMD RIG, AT TILLERING THROUGH HEADING, BEFORE SEED IS FILLED, TO CONTROL THE WEEDY RICE PLANT; 14-DAY PHI; FOR SPOT TREATING, APPLY WITH HAND GUN SPRAYERS OR HIGH-VOLUME SPRAYERS UTILIZING HAND GUNS; USE A MINIMUM OF 5 GPA TO A MAXIMUM OF 40 GPA
EPA Default Residue Trials: 4-11 5 6-2 10-2
IR-4 Residue Trial Plan: 4-11 5 6-2 10-2
Residue Protocol Use Pattern:
Efficacy/Crop Safety (E/CS) Data Required:
E/CS Research Comments:
Label Use Pattern Submitted To EPA:
EPA PIF Status: EPA ORANGE: 08/21
EPA Status:
EPA PRIA Date:
MRID:
Comments: JAPAN NOTED AS A KEY EXPORT MARKET:10/20; VALENT CONFIRMED SUPPORT OF THIS REQUEST, ONLY RESIDUE DATA NEEDED:11/20; ME TOO, AR, 03/21; EPA (HOLD) CAUTION: 08/21
International Status:
Archive Location:
QA Archive:

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