Attch 6 - WSSA Chemical Groups.pdf

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Attached to
Yakima Training Center Grounds Maintenance Federal contract opportunity
Solicitation number
W911S826RA011
Issued by
Department of the Army Materiel Command Mission and Installation Contracting Command Joint Base Lewis-McChord

About this file

This document is a herbicide product use history and reference chart for YTC (Yakima Training Center) that categorizes herbicides by WSSA (Weed Science Society of America) chemical classification groups and tracks their usage from 2008 through 2025. The chart organizes 29 WSSA groups containing various chemical families and active ingredients, with sample commercial product names. Yellow highlighting indicates products or chemical groups that have been used at YTC since 2008, while blue highlighting indicates the specific years of documented usage and projected future use for select products and chemistries through 2025.

The document serves as a comprehensive reference guide for herbicide inventory and application history at the facility. Key product lines documented include glyphosate (Roundup, Rodeo), which shows continuous use across the entire 2008-2025 period, and numerous other herbicides used intermittently such as dicamba, 2,4-D variants, atrazine, and various sulfonylureas and imidazolinones. Notable chemicals with projected future use include propyzamide, indaziflam (Esplanade 200 SC), and mesotrione/tembotrione. The chart also identifies products used annually for specific purposes, such as picloram and pyridine-based products for knapweed control. This reference material appears designed to support environmental compliance, inventory management, and herbicide application planning at the training facility.

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Text version

WSSA

Group

Chemical Family (sub-group)

Active Ingredients (may be others) Sample Products

Aryloxyphenoxy propionates clodinafop-propargyl

Cyclohexanediones clethodim Arrow 2E sethoxydim tralkoxydim

Sulfonylureas chlorsulfuron Telar metsulfuron-methyl Escort, Oust, MSM

Imidazolinones imazamethabenz Arsenal, Polaris, Treflan, Panoramic

2SL

imazamox imazapyr imazethapyr Authority, Spartan, Sonic

Triazolopyrimidime flumetsulam Defendor

Dinitroanilines ethalfluralin Pendulum 3EC, Surflan, Barricade (Prodiamine) pendimethalin trifluralin, Prodiamine

Pyridazine dithiopyr Dimension 2EW

None chlorthal-dimethyl

(DCPA)

A) Phenoxys

2,4-D

2,4-D, MCPA

2,4-DB

dichlorprop (2,4-DP)

MCPA

MCPB

mecoprop (MCPP)

B) Benzoic acids dicamba Dicamba

C) Carboxylic acids clopyralid Vista, Milestone, Sythe, Tordon, Stinger, Garlon, Tahoe, Transline, fluroxypyr picloram** Pelargonic Acid (Scythe)

Chemical Family (sub-group)

Active Ingredients (may be others) Sample Products triclopyr Pasturegard_HL, Surmount, Vanquish

Pyridine (Milestone)**

Triazines atrazine

Treflan cyanazine prometon prometryn simazine

Uracils bromacil Krovar I, Bromocil 40/40

6 Nitriles bromoxynil, buctril Bromoxynil, Buctril, Agristar, Bronc 2EC, Casoron

7 Ureas diuron Diuron, Direx, Karmex tebuthiuron, spike Spike

8 Thiocarbamates butylate 9 None glyphosate Roundup, Rodeo 10 None glufosinate-ammonium Rely 11 Triazole amitrole

Pyridazinone norflurazon Nicotinanilide

Others fluridone flurochloridone

13 Isoxazolidinone clomazone

Diphenylethers oxyfluorfen (Goal 2XL) Goal 2 XL Phenylpyrazole pyraflufen-ethyl Edict IVM Herbicide

N-phenylphthalimides

Half of active ingred. found in Piper

Oxadiazole oxadiazon Payload

15 Chloroacetamides metolachlor s-metolachlor

Chemical Family (sub-group)

Active Ingredients (may be others) Sample Products propyzamide Treflan, 1/2 of active ingred. Found in Piper dimethenamid 16 Benzofuran ethofumesate

17 Organoarsenicals Arsenic (monosodium salt of methylarsonic acid (MSMA))

18 Carbamate asulam 19 Phthalamate naptalam 20 Nitrile dichlobenil 21 Benzamide isoxaben Gallery

22 Bipyridyliums diquat Diquat paraquat Paraquat

23 Carbamates chlorpropham 24 Dinitrophenol dinoseb

25 Arylaminopropionic acid flamprop-methyl

26 None trichloroacetic acid

(TCA)

27 Various bromobutide cinmethylin dymron flupoxam benzoylisoxazole

Frequency

Isoxazole Pyrazole topramezone Triketone mesotrione, tembortione

29 Indaziflam Esplanade 200 SC **Products used annually for knapweed control

Legend:

Product/Group/Chemistry has been used at YTC since 2008 Product use history at YTC since 2008 (and projected use for select products/chemistries)

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