Intervention effectmodel-written summary

Preemergence metolachlor plus metribuzin provided at least 94% waterhemp control.

A claim from Control of herbicide-resistant common waterhemp (Amaranthus tuberculatus var. rudis) with pre- and post-emergence herbicides in soybean · 2007

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Taxon: soybeanGlycine maxt0
Treatment: metolachlor plus metribuzine0
Interactor: waterhempe0weed
Outcome: control of waterhempe0
Direction: controle0
Value: 94% or greatere0

Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleComparatorSettingQualifier

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

*Glycine max* · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0
“soybean”
✓ located verbatim in the source · title, characters 128–135

e0
“metolachlor plus metribuzin 94% or greater control of waterhemp 70 d after emergence at both locations”
✓ located verbatim in the source · abstract, characters 756–858

Title

Control of herbicide-resistant common waterhemp (Amaranthus tuberculatus var. rudis) with pre- and post-emergence herbicides in soybean

J. D. Vyn; C. J. Swanton; S. E. Weaver; et al. Canadian Journal of Plant Science 2007. doi:10.4141/p06-016

Other claims from this paper (12)

Observation Waterhemp resisted acetolactate synthase-inhibiting herbicides at both locations.
Observation Waterhemp resisted photosystem II-inhibiting herbicides at Petrolia.
Intervention effect Waterhemp interference caused up to 73% soybean yield loss versus weed-free checks.
Intervention effect Preemergence metolachlor provided greater than 80% waterhemp control at 70 days at both locations.
Intervention effect Preemergence dimethenamid provided greater than 80% waterhemp control.
Intervention effect Preemergence linuron provided greater than 80% waterhemp control.
Intervention effect Postemergence acifluorfen provided at least 87% waterhemp control in Cottam in 2003 and 2004 and Petrolia in 2004.
Intervention effect Postemergence fomesafen provided at least 87% waterhemp control in those site-years.
Intervention effect Postemergence imazamox plus fomesafen provided at least 87% waterhemp control in those site-years.
Intervention effect Postemergence glyphosate provided at least 87% waterhemp control in those site-years.
Observation Those postemergence herbicides controlled only 60 to 66% of waterhemp at Petrolia in 2005 because emergence was prolonged.
Recommendation Multiple herbicide applications per season may be required for effective waterhemp control in soybean.

Record rev-c5e998b5a1fb2d8e0e31ccd49869b8d10c5398d3a34b845768c92bf3ab820258 · schema claims-v0.9 · position 7 in the model’s answer

metolachlor · control · Glycine max (soybean)Positive and negative results

14 papers: 13 positive, 1 negative or no effect

12 papers in the same direction as this claim · 1 in the opposite direction

negative
MON 12037 with safener and 0.28 kg/ha metolachlor antagonized visible control and plant dry weight.
Metolachlor Efficacy as Influenced by Three Acetolactate Synthase-Inhibiting Herbicides · 1998
Opposite direction
positive
In resistant Palmer amaranth fields, only preemergence mixtures followed by postemergence fomesafen exceeded 80% late-season control.
Palmer Amaranth (Amaranthus palmeri) Control in Soybean with Glyphosate and Conventional Herbicide Systems · 2010
Same direction
positive
Specified PRE herbicides followed by glufosinate provided at least 95% waterhemp control.
Control of Glyphosate-Resistant Common Waterhemp (Amaranthus rudis) in Glufosinate-Resistant Soybean · 2017
Same direction
positive
Pyroxasulfone and S -metolachlor extended residual control of giant foxtail compared with a nontreated control.
Evaluating efficacy of preemergence soybean herbicides using field treated soil in greenhouse bioassays · 2021 · compared with nontreated control
Same direction
positive
S- metolachlor + fomesafen applied PRE gave 94 to 98% early-season Palmer amaranth control in soybean.
Evaluation of Herbicide Programs for Use in a 2,4-D–Resistant Soybean Technology for Control of Glyphosate-Resistant Palmer Amaranth (Amaranthus palmeri) · 2015
Same direction
positive
Adding dicamba to S-metolachlor increased control versus dicamba alone.
Early-Season Palmer Amaranth and Waterhemp Control from Preemergence Programs Utilizing 4-Hydroxyphenylpyruvate Dioxygenase–Inhibiting and Auxinic Herbicides in Soybean · 2015 · compared with dicamba alone
Same direction
positive
At Manhattan, S-metolachlor gave among the greatest Palmer amaranth control.
Palmer Amaranth (Amaranthus palmeri) and Common Waterhemp (Amaranthus rudis) Control with Very‐Long‐Chain Fatty Acid Inhibiting Herbicides · 2018
Same direction
positive
Several alachlor, SAN 582H, metolachlor plus imazaquin and quizalofop-P treatments controlled red rice by 83 to 95% in at least two years.
Red Rice (Oryza sativa) andEchinochloaspp. Control in Texas Gulf Coast Soybean (Glycine max) · 1998
Same direction

5 papers more in this group

See all 14 papers →

metribuzin · control · Glycine max (soybean)Positive and negative results

48 papers: 43 positive, 5 negative or no effect

42 papers in the same direction as this claim · 4 in the opposite direction · 1 reporting no difference from an alternative

no effect
Acetochlor mixtures with broadleaf herbicides gave 91% to 98% control of MHR waterhemp, similar to acetochlor applied alone.
Control of multiple-herbicide-resistant waterhemp with acetochlor-based herbicide mixtures in soybean · 2024 · compared with acetochlor applied alone
No difference from an alternativeCites this paper
positive
Preemergence S-metolachlor/metribuzin controlled GR waterhemp by 85%.
Control of Glyphosate-Resistant Waterhemp with Two-Pass Weed Control Strategies in Glyphosate/Dicamba-Resistant Soybean · 2018
Same directionCites this paper
positive
Flumioxazin plus metribuzin PRE followed by glyphosate POST controlled MR waterhemp at 66%.
Multiple-resistant waterhemp control in herbicide-resistant 3 (HT3) soybean · 2020
Same directionCites this paper
negative
metribuzin added to glyphosate reduced quackgrass control in soybeans.
Antagonism with Glyphosate and Residual Herbicide Combinations · 1981 · compared with glyphosate
Opposite direction
no effect
Gly + metribuzin had no effect on crabgrass control in soybean.
A Multy-Year Study Reveals the Importance of Residual Herbicides on Weed Control in Glyphosate-Resistant Soybean · 2018
Opposite direction
negative
Imazaquin or metribuzin preemergence followed only by cultivation gave less than 80% control in two of three experiments.
Influence of Cultivation Timing on Chemical Control of Sicklepod (Cassia obtusifolia) in Soybean (Glycine max) · 1991
Opposite direction
negative
Clomazone plus metribuzin at 45 DPP failed to control redroot pigweed in 1991 and 1992.
Efficacy of Clomazone Applied at Various Timings in Soybean (Glycine max) · 1997
Opposite direction
positive
In resistant Palmer amaranth fields, only preemergence mixtures followed by postemergence fomesafen exceeded 80% late-season control.
Palmer Amaranth (Amaranthus palmeri) Control in Soybean with Glyphosate and Conventional Herbicide Systems · 2010
Same direction

39 papers more in this group

See all 48 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.

Other papers on the same question

metolachlor · control · Glycine max (soybean)Positive and negative results

metribuzin · control · Glycine max (soybean)Positive and negative results