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Dockerfile: self-contained image with corpus + Chroma + BM25 baked in. Drawbar's compose pulls + runs without volume mounts. Built from sources.json (labels schema), PRODUCT_NAME=crop_chem by default, HYBRID_SEARCH=true (always-on for production quality). RERANK_URL + OLLAMA_URL get set at compose time. .gitea/workflows/refresh.yml: monthly cron (1st @ 06:00 UTC) does full scrape → reindex → image push. Scrapes Bayer (~30 min) + EPA PPLS row-crop filtered (~7h). Skips reindex+push if no corpus diff. Tags pushed: :latest, :<sha12>, :corpus-<YYYY.MM.DD>. .gitea/workflows/image-only.yml: on-demand or auto on code-only pushes to main (paths: docs_mcp/, rag/, scrape/, requirements.txt, Dockerfile, sources.json). Reindexes from committed corpus, builds image, pushes. ~10 min vs ~9h full refresh. .gitignore: corpus/ now COMMITTED (4,159 labels, 265 MB of .md + sidecars). Lets image-only.yml rebuild indexes without re-scraping. chroma/ + bm25/ still gitignored (regenerable binary indexes). .dockerignore: drops venv, eval results, PLAN/README/CLAUDE.md, deploy/, .git/ — keeps the image lean. corpus + chroma + bm25 explicitly NOT in dockerignore (those go INTO the image). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
361 lines
14 KiB
Markdown
361 lines
14 KiB
Markdown
# DUPONT LEXONE 4L HERBICIDE
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- EPA Reg No: **352-382**
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- Registrant: CORTEVA AGRISCIENCE, LLC
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- Signal word: Caution
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- Active ingredients: Metribuzin (42.1%)
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- Label accepted: 1989-10-12
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- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000352-00382-19891012.pdf
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---
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SUPPLEMENTAL lABELING
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EPA Reg. No. 352-382
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LEXONE® 4L HERBICIDE
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DIRECTED POSTEMERGE~CE USE ON SOYBEANS
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It is a violation of federal law to use this product
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in a mann~r inconsistent labeling.
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Du Pont Lexon(>~ 4L Herbicidf' is r(>commC'nded as a directed postemergellct.'
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trpatment of soybeans for control of certain annual wpeds.
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DJRECTIOSS FOR USE
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Apply when soybeans are at least 12 inches tall and whpn broadlpaf w('eds do no:
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exc(>ed 3 inchf's and grass('s and conunon ragwf'ed do not exceed 1 inch in ht>ight
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Direct spray to cover weeds with minimal or no contact to soybean plant. Cr()j'
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injury may rpsult if sprav is hif,I,,>r than 2 inches on soyb(>an sU·m. Al'l'lv 1/.'
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to 1 Pt. per aer£' in 25 to 40 "allons wat.er. Use thp low(>r rate for s('edl inr.
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wPC'ds and til(> higher rate for largC'r ... ('eds. Application of 1/2 Pt. p"r acr<'
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controls Florida bef,gan"'(,pd, carp£>tw('('d, common cocklebur, dayflo\;h'l". M(':·:iC.l.Il
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w('(·d. l'('droot pigw(>(>d (can·lesswpped). common purslane. sicklepod (cassia).
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v('I\'('(leaf. jimonswe('d, giant foxtail and crabgrass (1 a r£;(> , smooth); 3/!. to I
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Pt. !)(>r acre controls hemp s(·sbania. prickly sida (spiny sida. teaw(>('d.\; 1 1':
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pf'r ~1cr(' controls COfllmon rar,w('(>d and f,ivps partial control of morniuf, [,lory
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speci('s. horspnettl('. Florid3 purslanp (Florida pusley). spottpd spurr." ,lTld
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.... :iId poinsPttia whpn 1('55 than 3 inclws tall and hr:Jadl£"af sif,n.11f,1.1~S U;l to
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irl(:ll tall. Do not us£' 011 sand, nor on soils witll 1£"55 thaTl 1/7% orf~rlic m:it:(
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as crop injury may r('~;ult Add <1 non-ionic surfal:tant such ~iS Du Pont
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Surfilct.J.nt \.:,.: or "('rtho" :-:-71 SpH-'ader to the spray mixtur£" to ohtain b(·ttf'r
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W't'ttinr, of W'(>(>d If'af surf.-If"{,s. If Il['('cipd, a second application mav ht, rr.-ide
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after! davs.
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Apply only with f'quipmf'nt df'sif.llPd for pr£"cisp applicatioll of dirt'ctf'd spra .. ·.'-,
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SIKh as oilinp, sho£'s or gauf,f' wh('els. Do not f"xc('('d nozzlf> prf'SS'l[f' of 7) p.<-,:
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or us(' no;:zl£' tips smallf'r than ROO? T-Jet (or p'luivalf>nt). For broadc,ist
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ilppl ieilt ion, us£' a singlE' floorl-typf' sprav nozzlp (nK" sf'ri('s or f'qui'.'aif·nt)
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p('r mirlrllf', mounted on <10 oiliTlf. shoe or gflur,p whf"pl. For hand trp.1tmfIlt. \I~,'
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tW'o nozzlf's per row mountpd on oilinp, shops or F,R.up,e wh(,pls. OIH' nn ('deb sid.·
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of a row. Do not apply lIndpr wpatl"'r conditions which favor drift.
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fJ'.)3R;
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or,; lRR
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E I du Pont de Nemours & Co (Inc) • Agricultural Products Department. Wilmington. DE 19898
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SUPPLEI1ENTAL LABELING
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EPA REG. NO. 352-382
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i
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J U.,.~,·r the r8dt'lff11l:1!5ertici i~.
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• rIJ; • .:i··I·~I'!. ".,d }-L"t"',l1 du J\ct
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0.8 ',:: Jr., I t.,I til"" j..>"~\1"I.j",
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"LEXONE" 4L HERBICIDE ~"i~~';;~_>:~:52~ ::;r:\
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FOR USE ON WINTER WHEAT, BARLEY AND FALLOW
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DIRECTIONS FOR USE
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It is a violation of federal law to use this product
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in a manner inconsistent with its labeling.
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Du Pont "Lexone" 4L Herbicide is recommended for weed control:
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On the winter wheat varieties Eagle, Hawk, Larned, Newton, Pioneer
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2157, TAM W101, TAM 105, and Wrangler in the states of Kansas,
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Oklahoma, and Texas.
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On winter wheat, winter barley, and spring barley (except varieties
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Morex, Glenn, or Moravian 3) in the states of Idaho, oregon, Utah, and
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Washington.
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In reduced tillage fallow where wheat will be the following crop. For
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use in the states of Colorado, Idaho, Kansas, Montana, Nebraska, North
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Dakota, Oklahoma, Oregon, South Dakota, Texas, Utah, Washington, and
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wyoming.
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Do not use this product through any type of irrigation system.
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- 2 -
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Treatment controls or partially controls the following broadleaf weeds:
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Blue mustard l
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Bur buttercup
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Chickweed (common, mouse-ear, jagged)
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Conical catchfly
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Corn cockle
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Dog fennel (Mayweed)
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False flax
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Fanweed
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Filaree
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Flixweed l
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Gromwell l
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Henbit
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Jacobs ladder
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Jim Hill mustard
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Knotweed
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Kochia
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Lambsquarter
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Miners lettuce
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Pigweed (prostrate, redroot)
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Pineappleweed
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Prickl~ lettuce
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Russian thistle l
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Shepherdspurse
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Speedwell (i~leaf)
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Tansy mustard
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Tarweed (Fiddleneck)
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Treacle mustard
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Wild buckwheat l
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Wild mustard
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Treatment co~trols or partially controls the following grasses:
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Annu31 ryegrasf (except Kansas, Oklahoma, Texas)
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Downy brome l ,2
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Cheatgrass l ,2
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Green foxtail l
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Pacific meadow foxtail (Blackgrass)l
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windgrass l
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Yellow foxtail l
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lWeeds and grasses partially controlled. Partial control is ~~
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observable reduction in weed competition (reduced weed population ar.::/;:'l
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vigor) as compared to an untreated area. Degree of partial control can
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vary with soil type, environmental factors, and si~e of weeds at
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applicati on.
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2Best results with late fall treatments.
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- 3 -
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HOW TO USE ON DRYLAND WHEAT & BARLEY
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Apply postemergence to the crcp when wheat/barley is well tillered (at
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least 3 tillers) and has developed 2" secondary roots throughout the
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entire field. A well develop~d secondary root syste~ and good crop vigor
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is essential to minimize injury to wh~~t/barley. Application must be
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made prior to jointing as crop injury may result.
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For best weed control results:
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Apply "Lexone" 4L before broadleaf weeds emerge or shortly after
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emergence and before weeds are 2" taIlor across.
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Use a fall treatment for winter annuals or a spring treatment for
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summer annual b=oadleaf weeds. Avoid making treatments in
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mid-winter in areas where severe winter weather can cause crop
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stress.
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Apply "Lexone" 4L before grasses emerge or shortly after emergence
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and before the 3 to 5 leaf stage and use the higher dosage rates
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listed.
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Rainfall (1/2") within 2 to ) weeks after application is needed to move
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"Lexone" 4L into the weed root zone. Lack of adequate rainfall af .er
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application will result in poor control.
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USE RATES
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Make a single broadcast application postemergence to the crop as follows:
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Idaho. Oregon. Utah. and W~shington
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Pints of "Lexone" 4L Per Acre
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Soil Texture
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Coarse: Loamy sand,
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Sandy loam
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redium: Loam, Silt
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loam, Silt, Sandy
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clay, Sandy clay loam
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fine: Silty clay,
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Silty clay loam,
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Cl!y, Clay loam
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Less than 1%
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Organic Matter
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0.50 to 0.60
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0.50 to 0.60
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0.50 to 0.75
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1 to 2%
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Organic Matter
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0.50 to 0.60
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0.60 to 0.75
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0.75 to 1.0
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More than 2%
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Organic Matte]:,
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0.50 to 0.60
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0.60 to O.?()
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0.75 to 1. (,
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Do not use on gravelly or thinly covered or exposed subsoil ar3~C (clay
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knobs) as crop injury may occur.
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--------------------------------------------------------
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- 4 -
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Kansas, O~lahcma, Texas
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- , ,
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Pints of "Lexone" 4L Per Acre
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Soil Texture
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Coarse:
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Loamy sand,
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Sandy loam
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M~dium: Loam, silt
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loam, Silt, Sandy
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clay, Sandy clay loam
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Fine: Silty clay,
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silty clay loam,
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Clay loam
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Fall Application
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1 to 2% More than 2%
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Organic Orga~~c
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Matter Matter
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Do
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not
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use
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0.50
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to
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0.75
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0.75
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0.50
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0.75
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0.75
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to
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1.0
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1!P-ring
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1 to 2%
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organic
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Matter
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Do
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not
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use
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0.75
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to
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1.0
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0.75
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to
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1.0
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Application
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More than 2%
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Organic
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Matter
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0.50
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to
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0.75
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0.75
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to
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1.0
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1.0
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Do not use on gravelly or thinly covered or exposed subsoil areas (clay
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knobs) as crop injury may occur.
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Use the lower rates on coarse textured soils and the higher rates on
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medium or fine textured soils having more than 1% organic matter. For
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grass control, use the highest rate listed for your soil type.
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IRRIGATED WHEAT/BARLEY
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Rainfall or sprinkler irrigation is needed to activate "Lexone" 4L. If
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adequate rainfall (1/2" within 2 to 3 weeks after applicatior.) does not
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occur, then activate via sprinkler irrigation. Do not apply more than
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1/2" of water for the first irrigation after applica~ion. The maximum
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amount for each additional irrigation should not exceed I".
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3PECIFIC HERBICIDE COMBINATION
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Winter Wheat, Sprin~nd Winter Barley
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"Lexone" 4L may be tank mixed with "Igran" SOW for use on winte~ whebt
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and winter barley, Do not use more than 1.0 Ibs./acre "Igran" HOW ir
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tank mix. On winter wheat, spring barley, and winter barley, "i.,exone" tL
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may be tank mixed with "Glean", 2,4-0, "Banvel", MCPA, "Bronate",
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"Buctril", "Brominal Plus" or "Brominal", Refer to the other product
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labels registered for this use for additional precautions, diL~r.tions,
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rates, and weeds controlled.
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- 5 -
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"Lexone" 4L and "Igran" SOW (Winter wheat. winter barley) -
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Pacific NW and utah
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For added control of downy brome, apply "Lexone" 4L at 0.50 pints per
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acre plus "Igran" SOW at 0.75 to 1. 00 pounds per acre. Follow
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"Lexone" 4L timing of application recommendation. Do not use on spL"ing
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barley or irrigated wheat/barley. Refer to "Igran" SOW label for
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additional precautions and instructions.
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How to Use for Reduced Tillaqe Fallow
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Apply 0.67 to 1.5 pints "Lexone" 4L per acre as an after harvest
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treatment prior to subsequent planting ~f winter wheat. Use the lower
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rate on coarse textured soils and the t.igher rate on medium to fine
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texture soil.
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"Lexone" 4L can be applied in the fall after harvest at 1.0 to 1.5
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pts./acre or in the spring at 0.67 to 1.0 pts./acre as new weed growth
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begins.
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If large weeds (larger than 2" taIlor across) are present, or weeds
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other than those listed are present or anticipated, use a suitable
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registered companion herbicide such as "Glean", "Paraquat", or
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"Round-up". Refer 1:.0 labeling for these products for the additional use
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instructions and precautions.
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When using "Lexone" 4L and "Round-up" tank mix spray, volume should be
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10 gpa.
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Where spring application is appropriate in Colorado, Kansas, Montana,
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Nebraska, North Dakota, Oklahoma, South Dakota, Texas, and Wyoming for
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improved control of downy brame, Russian thistle, and tansy mustard, tank
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mix 0.50 to 1.0 pints of "Lexone" 4L with 2 to 2.5 Ibs. "Igran" SOW per
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acre.
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Do not plant spring seeded cereals following "Lexone" 4L fall fallow
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applications.
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Do not apply "Lexone" 4L in the spring if "Lexone" 4L was used the
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preceding fall or winter.
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Recrop Intervals
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Do not plant winter wheat within 6 months of treatment except ~n
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Colorado, Kansas, Montana, Nebraska, North Dakota, Oklahoma, South
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Dakota, Texas, and Wyoming where winter wheat may be planted 4 months
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after treatment of 0.50 to 1.0 pints "Lexone" 4L per acre.
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- 6 -
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Rotational Crop Interval
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Do not plant crops (other than wheat as listed above) within 10 months of
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treatment.
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SPRAY PREPARATION
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Mix the proper amount of "Lexone" 4L into the
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in the spray tank with the agitator running.
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fertilizer solutions should be added last.
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crop (as listed)
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necessary volume of water
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other herbicides or
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"Lexone" 4L may be mixed with liquid fertilizer. However, addition of
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liquid fertilizer to "Lexone" 4L alone or in a three-way tank mix with
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other herbicides increases the possibility of crop injury. Do not use
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surfactant when using "Lexone" 4L i)"l combination with liquid fertilizer.
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For application of "Lexone" 4L in liquid fertilizer, wherl"' the liquid
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fertilizer is the carrier, slurry the "Lexone" 4L in water, then
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thoroughly lnix the slurry into the liquid fertilizer.
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fallow
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"Lexone" 4L may be used in any combination listed above.
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When using tank mixes with "Lexone" 4L, small quantities should be tested
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for compatibility prior to use.
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The use of mixtures with "Lexone" 4L increases the possibilities cf
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injury or temporary yellowing to the crop, especially if 2" secondary
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roots are not developed throughout the field.
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APPLICATION
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Apply "Lexone" 4L using properl:r calibrated air or ground equipment.
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Uni~orm coverage is essential in ord~r to obtain optimum weed control
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performance and minimize the potential for crop injUry. Use a minimum
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spray volume of 3 gallons per acre by air or ground.
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As injury to crop may result, avoid overlapping of spray swath. Shut off
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spray booms while st:.:ting, turning, slowing I or stopping. C'mt.:i.rlUous
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agitation is needed to keep "Lexone" 4L in suspension.
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- 7 -
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NOTE: Do not apply under conditions where excessive drift may occur.
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Do not apply "Lexone" 4L alone or in combination to stressed
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plants.
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Do not treat fielrls where seed had been planted less than 1" deep.
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Do not treat fields that have been severely grazed.
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Do not graze treated fields for 14 days following treatment.
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Do not apply more than once per crop or fallow period.
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Because spring barley varieties may vary in their tolerance to
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"Lexone" 4L. limit first use to a small area to determine varietal
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response prior to adoption as a field practice.
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Do not use on soils having a calcareous surface area or pH of 7.5
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or higher as crop injury may result.
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Do not apply when soil is frozen or crop is in winter dormancy.
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Do not apply when soil is saturated with moisture.
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Temporary yellowing or injury of the crop may occur, especially if
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frost or snow occurs within a few days of application. Severe
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winter stress, heaving, exposed root systems, disease, or insect
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damage preceding or following application may increase crop
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injury. winter wheat/barley varieties differ in their degree of
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winter hardiness; severe injury ~ay result from treating
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non-winter hardy varieties that will not withstand the combination
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of winter and herbicide stress. If heavy rains occur soon after
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application, injlry to the crop may result. Extended dry weather
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following treatme,t may reduce weed control effectiveness.
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- 8 -
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IMPORTANT
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BEFORE USING "LEXONE" 4L, "IGRAN" :JOW*, OR OTHER HERBICIDES IN
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COMBINATION, READ AND CAREFULLY OBSERVE THE CAUTIONARY STATEMENTS AND ALL
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OTHER INFORMATION ON THE PRODUCT LABEI,S.
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This bulletin c0ntains new or supplemental directions for use of these
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products which may not appear on the package labels. Follow the
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instructions carefully.
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This labeling must be in the possession of the user at the time of
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pesticide application.
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*Registered trademark of Ciba Geigy Corporation, "Igran" 80W contains
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terbutryn.
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E. I. du Pont de Nemours and Company
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Agricultural Products Department
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Wilmington, Delaware 19898
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082185
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082688
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