Label Sections
• Introduction 
• Cereal Grains 
• Field Corn 
• Sweet Corn 
• Sorghum 
• Soybeans 
• Sugarcane 
• Rice
• Pome Fruits 
• Stone Fruits 
• Pastures
• Rangeland 
• Turf 
• Fallowland 
• Forestry 
• Non-Cropland 
• Aquatic
• Potatoes 
• Hops 
• Strawberries 
• Blueberries 
• Grapes 
• Cranberries 
• Citrus 
• Drift Management 

For Informtional and Illusatrative Purposes Only. Follow Directions for Use Found in the Product Label on the Container.

INTRODUCTION

Master Document

For Reregistration of 2,4-Dichlorophenoxyacetic Acid Uses

Supported by the 2,4-D Industry and IR-4

2,4-D Chemical Forms supported

  • 030001 2,4-dichlorophenoxyacetic acid (2,4-D)
  • 030019 Dimethylamine Salt of 2,4-D (DMA)
  • 030063 2-Ethylhexyl Ester* of 2,4-D (2-EHE)
  • 030053 Butoxyethyl Ester** of 2,4-D (BEE)
  • 030035 Triisopropanolamine Salt of 2,4-D (TIPA)
  • 030025 Isopropylamine Salt of 2,4-D (IPA)
  • 030016 Diethanolamine Salt of 2,4-D (DEA)
  • 030004 Sodium Salt of 2,4-D (Na)
  • 030066 Isopropyl Ester of 2,4-D (IPE)

* 2-ethylhexyl ester is considered one of three isooctyl esters. Studies and/or records relating to 2-EHE may be listed under two additional chemical numbers:

  • 030064 2,4-D Isooctyl Ester (2-ethyl-4-methylpentyl);
  • 030065 2,4-D Isooctyl Ester (2-octyl);

 ** May be listed as: 2,4-D Butoxyethanol Ester (same number - 030053)

 


The Master Label is based on data submitted for reregistration of 2,4-D:

  • Residue: Metabolism, RACs, processed commodities, meat/milk, fish / shellfish
  • Environmental fate laboratory studies: Analytes
  • Field dissipation: Terrestrial, aquatic, forestry
  • Rates / use patterns refined by extensive testing
  • Industry Task Force, companies, commodity groups, IR-4 supported uses

The Master Label includes:

  • Bounds of use patterns
  • Forms of 2,4-D supported
  • Timing / crop growth stage limitations
  • Maximum rates: per use / seasonal
  • Minimum intervals between applications
  • Preharvest / pregrazing intervals
  • Most Section 18 / 24(c) use patterns

The Master Label does not include:

  • EPA precautionary label statements
  • Worker Protection Standard information other than typical REIs
  • Complete recommendations and limitations related to efficacy, plant varieties, etc.
  • Ranges of rates, mixing directions, weed lists, etc. as per actual labels
  • Comprehensive equipment details
  • A very few Section 24(c) use parameters

Differences from Present Labels:

  • Esters are not supported for use on rice, sugarcane or aquatic non-crop areas (except BEE)
  • Reduced rate in residential turf from 2.0 to 1.5 lbs a.e./acre
  • Reduced preharvest rate on small grains
  • Only one of preplant or preemergence application on corn; seasonal maximum
  • 30-day treatment interval and seasonal maximum rate for pasture / rangeland
  • Reduced rate and seasonal maximum in forestry
  • Reduced rate and seasonal maximum in non-crop
  • Clarification of replanting in treated areas
  • Soybean grazing / feeding restriction removed
  • Dairy and slaughter animal grazing restrictions removed
  • Aquatic APPLICATION RATEs as PPM concentration rather than pounds per surface acre.
  • Added aquatic use restrictions for potable water (drinking water) and swimming.
  • Added new use, hops.
  • High volume and low volume application instruction for non-crop use site.
  • Added drift language
  • Applications of granular formulation are allowed on corn, sorghum, grass grown for seed or sod, turf, cranberries, non-crop land and aquatic use sites.
  • All end use labels will contain “General Instructions” that all banding applications will be an “adjusted band”, e.g.:

Example label wording for band treatment: If only bands or rows are treated, leaving middles untreated, the dosage [and spray volume (if applicable)] per crop acre is [are] reduced proportionately. For example, treating a 12-inch band where the row spacing is 36 inches would require 1/3 of the recommended broadcast rate per acre (12 inches divided by 36 inches = 1/3).

 

Band width in inches
Row width in inches
  X  Broadcast rate per acre =  Band rate per acre


The following spray volume equation is for sprayable products only:

 

Band width in inches
Row width in inches
  X  Broadcast volume per acre =  Band volume per acre




The Master Label is the culmination of results from many reregistration studies on 2,4-D. It is presented as the foundation for describing 2,4-D use patterns for reregistration:

  • Unless individual registrants support other use patterns, the master label should supersede present labels.
  • Recommendation is for EPA to rely on the 2,4-D Master Label for risk assessment and risk management.

 



 

 Copyright 2012 Industry Task Force II on 2,4-D Research Data

 
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