| Reduced Risk Status: |
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| IPM Compatibility: |
Per requester: Good Fit; Several important prune/plum rootstocks are known for suckering. Current primary management tactics for sucker control includes physical approaches such as hand removal or repeated applications of contact herbicide such as paraquat. Low rates of NAA can suppress sucker growth and reduce use of more damaging herbicides such as paraquat and 2,4-D:07/23; VERY GOOD FIT: SAME: WSR
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| Reasons for need: |
Rootstock suckers, basal trunk sprouts. NEED FOR SYSTEMIC LONG LASTING PRODUCT TO SUPPRESS SUCKER GROWTH AND REDUCE NUMBER OF CONTACT HERBICIDE SPRAYS AND HAND LABOR:07/23
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| Requesting State(s): |
CA:Hanson, B* ;
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| PCR Use Pattern: |
USE THE TRE-HOLD SPROUT INHIBITOR A-112 PRODUCT; MAKE 2 SOIL DIRECTED BASAL APPLIC OF A 1% AI SOLUTION, V/V, 28-DAY INTERVAL; APPLY AS A DIRECTED SPRAY TO THE LOWER TREE TRUNKS AND IMMEDIATE SURROUNDING AREA; MAKE 1ST APPPLIC WHEN SUCKERS ARE LESS THAN 12 INCH; APPLY IN A DILUTE VOLUME OF UP TO 44 GPA, USING A NOZZLE THAT GENERATES COARSE DROPLETS, &DIRECT THE SPRAY TO THE BASE OF THE TREES; IF NEEDED RE-APPLY IN 60 DAY. Based on guidance on NAA from EPA, MFG suggests the use pattern include the following: Apply product as a directed spray to the lower tree trunks and up to 12 inches (1 foot) around the base of the tree, &phyto observations need to be collected in the residue trials:9/23;
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| EPA Default Residue Trials: |
5 10-5 11 12
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| IR-4 Residue Trial Plan: |
5 10-5 11 12 (decline & processing)
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| Residue Protocol Use Pattern: |
USE THE TREE-HOLD A-112 SPROUT INHIBITOR PRODUCT (15.1% 1-NAPHTHALENE ACETIC ACID, ETHYL ESTER 1-NAPHTHALENE ACETIC ACID [NAA] EQUIVALENT, 1 LB AI/GAL OR 13.2% BY WEIGHT); PRUNE SUCKERS (SPROUTS) PRIOR TO EACH APPLIC AND MAKE APPLIC PER GROWER PRACTICES WITHIN 2 DAYS OF PRUNING; MAKE 2 APPLIC, BANDED TO THE GROUND, OF 1% W/V AI SOLUTION, IN 44 GPA, AND A 2ND TREATED PLOT WITH 3.6 LB AI/A IN 20-30 OR 55-80 GPA, 30-DAY INTERVAL, 45-DAY PHI; EACH APPLIC SHOULD BE MADE IN BANDS AT LEAST 2 FT WIDE ALONG EACH SIDE OF THE TREES, EXTENDING OUT FROM THE TRUNK FOR AT LEAST A 4 FT BAND; IN THE TRIAL FOR PROCESSING ADD A 3RD TREATED PLOT WITH AN 18 LB AI/A RATE, IN 20-30 OR 55-80 GPA; ALL APPLC SHALL INCLUDE A LABELED RATE OF AN ADJUVANT
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| Efficacy/Crop Safety (E/CS) Data Required: |
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| E/CS Research Comments: |
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| Label Use Pattern Submitted To EPA: |
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| EPA PIF Status: |
Green 12/23
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| EPA Status: |
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| EPA PRIA Date: |
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| MRID: |
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| Comments: |
This request was rec'd in Dec 2022 but determined to be an SSR. Since then, it was decided to consider as a New request, and the PCR rec'd date was adjusted. X-ref with PR# 03523 that had 1 residue study in 1991 and the project subsequently cancelled. Also, 3, non-IR-4 funded, e/cs field trials are currently be done in CA:07/23; MFG supports as "Researchable, Residue & E/CS Data Needed":08/23; AMVAC is comfortable with E/CS data and now supports as "Researchable, Only Residue Data Needed" Phyto observations will need to be collected in the residue trials:09/23/sb; EPA Green 12/23; Status updated to complete w ongoing trials 05/24/drs;
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| International Status: |
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| Archive Location: |
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| QA Archive: |
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