Paper · 2022 · Kansas Agricultural Experiment Station Research Reports

Single and Split Herbicide Applications for Efficacy in Corn

R. S. Currie; P. W. Geier

Read at the source ↗doi:10.4148/2378-5977.8341 ↗OpenAlex W4292707227 ↗

5
claims
10
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by

Abstract

The objective of this study was to compare season-long weed control from single and sequential herbicide applications in corn. Control of all weed species was generally good (90% or more) early in the season regardless of preemergence (PRE) herbicide. However, Russian thistle and Palmer amaranth control was best later in the season when a PRE herbicide was followed by a postemergence (POST) treatment. While all herbicide treatments increased yields compared to the untreated control, yields were greatest when Lumax EZ PRE (atrazine/mesotrione/metolachlor) was followed by Acuron (atrazine/bicyclopyrone/mesotrione/metolachlor) and glyphosate POST.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 5

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All preemergence herbicides gave at least 90% control of all weed species early in the season.

Treatment
preemergence (PRE) herbicidee0
Outcome
Control of all weed speciese0
Value
90% or moree0
Qualifier
early in the seasone0

Not reportedComparatorDirection

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Control of all weed species was generally good (90% or more) early in the season regardless of preemergence (PRE) herbicide.”

✓ located verbatim in the source · abstract, characters 127–251 · show in text ↑
t0

“in Corn”

✓ located verbatim in the source · title, characters 53–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Later season Russian thistle control was best with a preemergence herbicide followed by postemergence treatment.

Treatment
a PRE herbicide was followed by a postemergence (POST) treatmente0
Interactor
Russian thistleSalsola traguse0weed
Outcome
controle0
Direction
beste0
Qualifier
later in the seasone0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗
Salsola tragus
Salsola tragus · InteractorAnRo0002 · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Russian thistle and Palmer amaranth control was best later in the season when a PRE herbicide was followed by a postemergence (POST) treatment.”

✓ located verbatim in the source · abstract, characters 261–404 · show in text ↑
t0

“in Corn”

✓ located verbatim in the source · title, characters 53–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Later season Palmer amaranth control was best with a preemergence herbicide followed by postemergence treatment.

Treatment
a PRE herbicide was followed by a postemergence (POST) treatmente0
Interactor
Palmer amaranthe0weed
Outcome
Palmer amaranth controle0
Direction
beste0
Qualifier
later in the seasone0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Russian thistle and Palmer amaranth control was best later in the season when a PRE herbicide was followed by a postemergence (POST) treatment.”

✓ located verbatim in the source · abstract, characters 261–404 · show in text ↑
t0

“in Corn”

✓ located verbatim in the source · title, characters 53–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All herbicide treatments increased corn yield compared with untreated control.

Treatment
all herbicide treatmentse0
Outcome
yieldse0
Direction
increasede0
Comparator
untreated controle0

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“all herbicide treatments increased yields compared to the untreated control”

✓ located verbatim in the source · abstract, characters 411–486 · show in text ↑
t0

“in Corn”

✓ located verbatim in the source · title, characters 53–60 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Corn yields were greatest with Lumax EZ preemergence followed by Acuron and glyphosate postemergence.

Treatment
Lumax EZ PRE (atrazine/mesotrione/metolachlor) was followed by Acuron (atrazine/bicyclopyrone/mesotrione/metolachlor) and glyphosate POSTe0
Outcome
yieldse0
Direction
greateste0

Not reportedComparator

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

Zea mays subsp. mays
Zea mays subsp. mays · TaxonDominicus Johannes Bergsma · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“yields were greatest when Lumax EZ PRE (atrazine/mesotrione/metolachlor) was followed by Acuron (atrazine/bicyclopyrone/mesotrione/metolachlor) and glyphosate POST.”

✓ located verbatim in the source · abstract, characters 488–652 · show in text ↑
t0

“in Corn”

✓ located verbatim in the source · title, characters 53–60 · show in text ↑

metolachlor · yield · Zea mays (maize)Results differ

24 papers: 19 positive, 5 negative or no effect

18 papers in the same direction as this paper · 5 in the opposite direction

  1. no effect
    Sweet corn yields at Blackville and Tifton were similar between the half and full rates of atrazine plus S-metolachlor after wild radish or rye cover crops.

    Use of Wild Radish (Raphanus raphanistrum) and Rye Cover Crops for Weed Suppression in Sweet Corn · 2008

    Opposite direction

  2. negative
    Reducing atrazine and metolachlor to one-fourth the rate in the absence of cover crop reduced corn yield in two of four years compared with the standard treatment.

    Reduced-Herbicide Weed Management Systems for No-Tillage Corn (Zea mays) in a Hairy Vetch (Vicia villosa) Cover Crop · 1993 · compared with the standard treatment

    Opposite direction

  3. no effect
    Hairy vetch cover yields did not differ with or without atrazine and metolachlor.

    Cover Crop Management and Weed Suppression in No-tillage Sweet Corn Production · 2004 · compared with without atrazine and metolachlor

    Opposite direction

20 papers more in this group

See all 24 papers →

mesotrione · yield · Zea mays (maize)Results differ

29 papers: 21 positive, 8 negative or no effect

20 papers in the same direction as this paper · 6 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
    Transient mesotrione injury did not reduce corn yield.

    Mesotrione Alone and in Mixtures with Glyphosate in Glyphosate-Resistant Corn (Zea mays)1 · 2003

    Opposite direction

  2. negative
    Mesotrione caused 9 to 40% yield losses only in homozygous cypcyp hybrids.

    Genetic Factors Influencing Adverse Effects of Mesotrione and Nicosulfuron on Sweet Corn Yield · 2010

    Opposite direction

  3. negative
    Mesotrione alone produced the lowest field yield.

    Efficacy and selectivity of alternative herbicides to glyphosate on maize · 2019

    Opposite direction

25 papers more in this group

See all 29 papers →

glyphosate · yield · Zea mays (maize)Results differ

77 papers: 42 positive, 35 negative or no effect

41 papers in the same direction as this paper · 29 in the opposite direction · 6 reporting no difference from an alternative

  1. negative
    Early glyphosate at the three highest rates reduced corn yield by 22 to 78% on average.

    Rice (Oryza sativa) and Corn (Zea mays) Response to Simulated Drift of Glyphosate and Glufosinate1 · 2003

    Opposite direction

  2. negative
    Weeds that emerged after the 5-cm glyphosate timing reduced soil moisture and grain yield at both locations.

    Effect of Weed Removal Timing and Row Spacing on Soil Moisture in Corn (Zea mays) · 2006

    Opposite direction

  3. no effect
    Cultivation after glyphosate did not affect corn yield.

    Influence of Herbicide Application Rate, Timing, and Interrow Cultivation on Weed Control and Corn (Zea mays) Yield in Glufosinate-Resistant and Glyphosate-Resistant Corn · 1999

    Opposite direction

73 papers more in this group

See all 77 papers →

atrazine · yield · Zea mays (maize)Results differ

240 papers: 205 positive, 35 negative or no effect

204 papers in the same direction as this paper · 29 in the opposite direction · 6 reporting no difference from an alternative

  1. negative
    Corn grain yield fell 39% in year five where atrazine had been discontinued.

    Weed Seed Decline in Irrigated Soil after Six Years of Continuous Corn(Zea mays)and Herbicides · 1984

    Opposite direction

  2. no effect
    Sweet corn yields at Blackville and Tifton were similar between the half and full rates of atrazine plus S-metolachlor after wild radish or rye cover crops.

    Use of Wild Radish (Raphanus raphanistrum) and Rye Cover Crops for Weed Suppression in Sweet Corn · 2008

    Opposite direction

  3. negative
    Reducing atrazine and metolachlor to one-fourth the rate in the absence of cover crop reduced corn yield in two of four years compared with the standard treatment.

    Reduced-Herbicide Weed Management Systems for No-Tillage Corn (Zea mays) in a Hairy Vetch (Vicia villosa) Cover Crop · 1993 · compared with the standard treatment

    Opposite direction

236 papers more in this group

See all 240 papers →

herbicide · control · Zea mays (maize)Positive and negative results

119 papers: 94 positive, 25 negative or no effect

93 papers in the same direction as this paper · 20 in the opposite direction · 5 reporting no difference from an alternative

  1. negative
    Eighteen of 22 corn broadleaf herbicide combinations reduced sethoxydim efficacy on at least one grass weed species.

    Interactions of Sethoxydim and Corn (Zea mays) Postemergence Broadleaf Herbicides on Three Annual Grasses · 1996

    Opposite direction

  2. negative
    Single PRE herbicide applications gave the least wild-proso millet control.

    Sequential Applications Control Woolly Cupgrass (Eriochloa villosa) and Wild-Proso Millet (Panicum miliaceum) in Corn (Zea mays) · 1997

    Opposite direction

  3. negative
    Pyroxasulfone and other chloroacetamide herbicides applied alone failed to provide residual control greater than 79, 70 and 54%.

    Tank Mixing Pendimethalin with Pyroxasulfone and Chloroacetamide Herbicides Enhances In-Season Residual Weed Control in Corn · 2015

    Opposite direction

115 papers more in this group

See all 119 papers →

herbicide · weed · Zea mays (maize)Positive and negative results

406 papers: 360 positive, 46 negative or no effect

359 papers in the same direction as this paper · 36 in the opposite direction · 10 reporting no difference from an alternative

  1. negative
    GMHT management increased weed biomass in maize.

    Responses of plants and invertebrate trophic groups to contrasting herbicide regimes in the Farm Scale Evaluations of genetically modified herbicide–tolerant crops · 2003 · compared with conventional treatments

    Opposite direction

  2. negative
    Without herbicide, weed control was poor regardless of row spacing or population.

    Influence of Narrow Row/High Population Corn (Zea mays) on Weed Control and Light Transmittance · 1995

    Opposite direction

  3. no effect
    Weed diversity was little affected by treatment in all three crops except immediately after herbicide use.

    Weeds in fields with contrasting conventional and genetically modified herbicide–tolerant crops. I. Effects on abundance and diversity · 2003

    Opposite direction

402 papers more in this group

See all 406 papers →

herbicide · yield · Zea mays (maize)Positive and negative results

651 papers: 500 positive, 151 negative or no effect

499 papers in the same direction as this paper · 127 in the opposite direction · 24 reporting no difference from an alternative

  1. negative
    Without herbicide, yield was reduced regardless of row spacing or population.

    Influence of Narrow Row/High Population Corn (Zea mays) on Weed Control and Light Transmittance · 1995

    Opposite direction

  2. negative
    Lack of weed control reduced green ear yield and grain yield of corn.

    Corn yield response to weed and fall armyworm controls · 2010 · compared with weed control

    Opposite direction

  3. no effect
    Herbicide-treated plots had no significant corn grain yield difference from handweeded plots.

    Effect of Postemergence Application Rate and Timing of Mesotrione on Corn (Zea mays) Response and Weed Control1 · 2002 · compared with handweeded plots

    Opposite direction

647 papers more in this group

See all 651 papers →

herbicide · Salsola tragus · Zea mays (maize)Results agree

14 papers: 14 positive, 0 negative or no effect

13 papers in the same direction as this paper

  1. positive
    Postemergence 2,4-D with soil-applied atrazine improved consistency of weed control across years.

    Russian Thistle (Salsola iberica) and Kochia (Kochia scoparia) Control in Dryland Corn (Zea mays) · 1990 · compared with soil-applied atrazine

    Same direction

  2. positive
    All herbicides controlled Russian thistle and common sunflower by 90% or more in corn.

    Comparisons of Terbuthylazine and Atrazine Rates and Tank Mixtures in Irrigated Corn · 2019

    Same direction

  3. positive
    All herbicides controlled Russian thistle by at least 95%.

    Efficacy of Preemergence and Sequential Applications with Corvus, Atrazine, Starane, Balance, Anthem, Capreno, Diflexx and Halex GT in Irrigated Corn · 2016

    Same direction

10 papers more in this group

See all 14 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.