Paper · 2018 · Weed Technology

Injury Criteria Associated with Soybean Exposure to Dicamba

Matthew R. Foster; James L. Griffin

15
claims
30
verbatim quotes
24
citations
2
research areas
—
Not open access

Abstract

Abstract Research conducted in the field identified 14 injury criteria associated with dicamba (Clarity® diglycolamine salt) applied at 0.6 to 280 g ae ha –1 (1/1,000 to 1/2 of 560 g ha –1 use rate) to indeterminate soybean at V3/V4 or R1/R2. For each criterion, injury was rated using a scale of 0=no injury, 1=slight, 2=slight to moderate, 3=moderate, 4=moderate to severe, and 5=severe. Greatest crop injury 15 d after treatment (DAT) was observed for dicamba rates of 0.6 to 4.4 g ha –1 for upper canopy pale leaf margins (3.8 to 4.2) at V3/V4 and for terminal leaf cupping (4.1 to 5.0) at R1/R2, and for rates of 0.6 to 8.8 g ha –1 for upper canopy leaf cupping (3.8 to 4.8) and upper canopy leaf surface crinkling (3.4 to 4.4) at V3/V4. Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2. The response to increasing dicamba rate observed for the injury criteria was in contrast to the steady increase in visual injury and plant height reduction rated as 0 to 100%. The moderate to severe upper canopy leaf cupping, pale leaf margins, and leaf surface crinkling, and terminal leaf cupping 15 DAT with dicamba at 0.6 to 4.4 g ha –1 corresponded to soybean yield loss of 1% to 9% for application at V3/V4 and 2% to 17% at R1/R2.

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Claims 15

Observationobservedoriginal resultmeasured

Claim · model-written summary

Field research identified 14 injury criteria associated with dicamba in soybean.

Taxon
SoybeanGlycine maxt0
Treatment
dicambae1
Outcome
injury criteriae1
Value
14e1
Setting
in the fielde1

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e1

“Research conducted in the field identified 14 injury criteria associated with dicamba”

✓ located verbatim in the source · abstract, characters 9–94 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Greatest 15 DAT injury in soybean was observed for upper canopy pale leaf margins (3.8 to 4.2) at V3/V4 with dicamba at 0.6 to 4.4 g ha –1.

Taxon
SoybeanGlycine maxt0
Organ / stage
upper canopye2
Treatment
dicamba rates of 0.6 to 4.4 g ha –1e2
Outcome
pale leaf marginse2
Direction
Greateste2
Value
3.8 to 4.2e2

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e2

“Greatest crop injury 15 d after treatment (DAT) was observed for dicamba rates of 0.6 to 4.4 g ha –1 for upper canopy pale leaf margins (3.8 to 4.2) at V3/V4 and for terminal leaf cupping (4.1 to 5.0) at R1/R2, and for rates of 0.6 to 8.8 g ha –1 for upper canopy leaf cupping (3.8 to 4.8) and upper canopy leaf surface crinkling (3.4 to 4.4) at V3/V4”

✓ located verbatim in the source · abstract, characters 390–741 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Greatest 15 DAT injury in soybean was observed for terminal leaf cupping (4.1 to 5.0) at R1/R2 with dicamba at 0.6 to 4.4 g ha –1.

Taxon
SoybeanGlycine maxt0
Organ / stage
terminal leafe2
Treatment
dicamba rates of 0.6 to 4.4 g ha –1e2
Outcome
terminal leaf cuppinge2
Direction
Greateste2
Value
4.1 to 5.0e2

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e2

“Greatest crop injury 15 d after treatment (DAT) was observed for dicamba rates of 0.6 to 4.4 g ha –1 for upper canopy pale leaf margins (3.8 to 4.2) at V3/V4 and for terminal leaf cupping (4.1 to 5.0) at R1/R2, and for rates of 0.6 to 8.8 g ha –1 for upper canopy leaf cupping (3.8 to 4.8) and upper canopy leaf surface crinkling (3.4 to 4.4) at V3/V4”

✓ located verbatim in the source · abstract, characters 390–741 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Greatest 15 DAT injury in soybean was observed for upper canopy leaf cupping (3.8 to 4.8) at V3/V4 with dicamba at 0.6 to 8.8 g ha –1.

Taxon
SoybeanGlycine maxt0
Organ / stage
upper canopye2
Treatment
rates of 0.6 to 8.8 g ha –1e2
Outcome
upper canopy leaf cuppinge2
Direction
Greateste2
Value
3.8 to 4.8e2

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e2

“Greatest crop injury 15 d after treatment (DAT) was observed for dicamba rates of 0.6 to 4.4 g ha –1 for upper canopy pale leaf margins (3.8 to 4.2) at V3/V4 and for terminal leaf cupping (4.1 to 5.0) at R1/R2, and for rates of 0.6 to 8.8 g ha –1 for upper canopy leaf cupping (3.8 to 4.8) and upper canopy leaf surface crinkling (3.4 to 4.4) at V3/V4”

✓ located verbatim in the source · abstract, characters 390–741 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Greatest 15 DAT injury in soybean was observed for upper canopy leaf surface crinkling (3.4 to 4.4) at V3/V4 with dicamba at 0.6 to 8.8 g ha –1.

Taxon
SoybeanGlycine maxt0
Organ / stage
upper canopye2
Treatment
rates of 0.6 to 8.8 g ha –1e2
Outcome
upper canopy leaf surface crinklinge2
Direction
Greateste2
Value
3.4 to 4.4e2

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e2

“Greatest crop injury 15 d after treatment (DAT) was observed for dicamba rates of 0.6 to 4.4 g ha –1 for upper canopy pale leaf margins (3.8 to 4.2) at V3/V4 and for terminal leaf cupping (4.1 to 5.0) at R1/R2, and for rates of 0.6 to 8.8 g ha –1 for upper canopy leaf cupping (3.8 to 4.8) and upper canopy leaf surface crinkling (3.4 to 4.4) at V3/V4”

✓ located verbatim in the source · abstract, characters 390–741 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Lower stem base swelling at V3/V4 at dicamba rates up to 4.4 g ha –1 was equivalent to the nontreated control.

Taxon
SoybeanGlycine maxt0
Treatment
dicamba rates as high as 4.4 g ha –1e3
Outcome
lower stem base swellinge3
Direction
equivalente3
Comparator
nontreated controle3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e3

“Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2”

✓ located verbatim in the source · abstract, characters 743–1221 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Upper canopy leaf rollover/inversion at R1/R2 at dicamba rates up to 4.4 g ha –1 was equivalent to the nontreated control.

Taxon
SoybeanGlycine maxt0
Treatment
dicamba rates as high as 4.4 g ha –1e3
Outcome
upper canopy leaf rollover/inversione3
Direction
equivalente3
Comparator
nontreated controle3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e3

“Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2”

✓ located verbatim in the source · abstract, characters 743–1221 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Terminal leaf necrosis at R1/R2 at dicamba rates up to 4.4 g ha –1 was equivalent to the nontreated control.

Taxon
SoybeanGlycine maxt0
Treatment
dicamba rates as high as 4.4 g ha –1e3
Outcome
terminal leaf necrosise3
Direction
equivalente3
Comparator
nontreated controle3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e3

“Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2”

✓ located verbatim in the source · abstract, characters 743–1221 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Leaf petiole base swelling and stem epinasty at R1/R2 at dicamba rates up to 8.8 g ha –1 were equivalent to the nontreated control.

Taxon
SoybeanGlycine maxt0
Treatment
rates as high as 8.8 g ha –1e3
Outcome
leaf petiole base swelling and stem epinastye3
Direction
equivalente3
Comparator
nontreated controle3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e3

“Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2”

✓ located verbatim in the source · abstract, characters 743–1221 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Lower stem base lesions/cracking at dicamba rates up to 8.8 g ha –1 was equivalent to the nontreated control.

Taxon
SoybeanGlycine maxt0
Treatment
rates as high as 8.8 g ha –1e3
Outcome
lower stem base lesions/crackinge3
Direction
equivalente3
Comparator
nontreated controle3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e3

“Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2”

✓ located verbatim in the source · abstract, characters 743–1221 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Lower leaf soil contact at dicamba rates up to 17.5 g ha –1 was equivalent to the nontreated control.

Taxon
SoybeanGlycine maxt0
Treatment
rates as high as 17.5 g ha –1e3
Outcome
lower leaf soil contacte3
Direction
equivalente3
Comparator
nontreated controle3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e3

“Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2”

✓ located verbatim in the source · abstract, characters 743–1221 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Leaf petiole droop at R1/R2 at dicamba rates up to 17.5 g ha –1 was equivalent to the nontreated control.

Taxon
SoybeanGlycine maxt0
Treatment
rates as high as 17.5 g ha –1e3
Outcome
leaf petiole droope3
Direction
equivalente3
Comparator
nontreated controle3

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e3

“Injury 15 DAT was equivalent to the nontreated control for dicamba rates as high as 4.4 g ha –1 for lower stem base swelling at V3/V4 and for upper canopy leaf rollover/inversion and terminal leaf necrosis at R1/R2; for rates as high as 8.8 g ha –1 for leaf petiole base swelling and stem epinasty at R1/R2, and lower stem base lesions/cracking (V3/V4 and R1/R2 average); and for rates as high as 17.5 g ha –1 for lower leaf soil contact at V3/V4 and leaf petiole droop at R1/R2”

✓ located verbatim in the source · abstract, characters 743–1221 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Visual injury and plant height reduction rose steadily with increasing dicamba rate, in contrast to the injury criteria (0 to 100%).

Taxon
SoybeanGlycine maxt0
Treatment
increasing dicamba ratee4
Outcome
visual injury and plant height reductione4
Direction
steady increasee4
Value
0 to 100%e4

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e4

“The response to increasing dicamba rate observed for the injury criteria was in contrast to the steady increase in visual injury and plant height reduction rated as 0 to 100%”

✓ located verbatim in the source · abstract, characters 1223–1397 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Moderate to severe injury at dicamba 0.6 to 4.4 g ha –1 corresponded to soybean yield loss of 1% to 9% when applied at V3/V4.

Taxon
SoybeanGlycine maxt0
Treatment
dicamba at 0.6 to 4.4 g ha –1e5
Outcome
soybean yield losse5
Value
1% to 9%e5
Qualifier
for application at V3/V4e5

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e5

“The moderate to severe upper canopy leaf cupping, pale leaf margins, and leaf surface crinkling, and terminal leaf cupping 15 DAT with dicamba at 0.6 to 4.4 g ha –1 corresponded to soybean yield loss of 1% to 9% for application at V3/V4 and 2% to 17% at R1/R2”

✓ located verbatim in the source · abstract, characters 1399–1658 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Moderate to severe injury at dicamba 0.6 to 4.4 g ha –1 corresponded to soybean yield loss of 2% to 17% when applied at R1/R2.

Taxon
SoybeanGlycine maxt0
Treatment
dicamba at 0.6 to 4.4 g ha –1e5
Outcome
soybean yield losse5
Value
2% to 17%e5
Qualifier
at R1/R2e5

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

t0

“Injury Criteria Associated with Soybean Exposure to Dicamba”

✓ located verbatim in the source · title, characters 0–59 · show in text ↑
e5

“The moderate to severe upper canopy leaf cupping, pale leaf margins, and leaf surface crinkling, and terminal leaf cupping 15 DAT with dicamba at 0.6 to 4.4 g ha –1 corresponded to soybean yield loss of 1% to 9% for application at V3/V4 and 2% to 17% at R1/R2”

✓ located verbatim in the source · abstract, characters 1399–1658 · show in text ↑

dicamba · growth · Glycine max (soybean)Results differ

30 papers: 10 positive, 20 negative or no effect

19 papers in the same direction as this paper · 10 in the opposite direction

  1. negative
  2. negative
  3. negative

26 papers more in this group

See all 30 papers →

dicamba · crop injury · Glycine max (soybean)Results differ

37 papers: 8 positive, 29 negative or no effect

28 papers in the same direction as this paper · 8 in the opposite direction

  1. negative
  2. negative
  3. negative

33 papers more in this group

See all 37 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.