Paper · 1995 · Weed Technology

Effects of Grain Sorghum (Sorghum bicolor)Herbicides on Charcoal Rot Fungus

John S. Russin; Carol H. Carter; James L. Griffin

17
claims
31
verbatim quotes
17
citations
2
research areas
—
Not open access

Abstract

Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina , causal fungus for charcoal rot disease. In laboratory studies, all three herbicides reduced fungal colony diameter and increased production of microsclerotia. Alachlor and metolachlor reduced germination of fungal microsclerotia. Atrazine did not affect microsclerotia germination, but lessened the effects of alachlor and metolachlor on germination when applied in combination. In greenhouse studies, atrazine reduced numbers of M. phaseolina microsclerotia recovered from soil after 8 wk, and this resulted in reduced colonization of roots by this fungus at harvest. Colonization of grain sorghum roots by M. phaseolina was not affected by alachlor or metolachlor. Grain sorghum growth was reduced by atrazine at all intervals and by alachlor and metolachlor at harvest, despite use of seed safened with cyometrinil.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 17

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Atrazine reduced colony diameter of Macrophomina phaseolina in the laboratory.

Taxon
grain sorghumSorghum bicolore0
Treatment
atrazinee0
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
fungal colony diametere1
Direction
reducede1
Setting
laboratorye1

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e1

“In laboratory studies, all three herbicides reduced fungal colony diameter and increased production of microsclerotia”

✓ located verbatim in the source · abstract, characters 209–326 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Alachlor reduced colony diameter of Macrophomina phaseolina in the laboratory.

Taxon
grain sorghumSorghum bicolore0
Treatment
alachlore0
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
fungal colony diametere1
Direction
reducede1
Setting
laboratorye1

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e1

“In laboratory studies, all three herbicides reduced fungal colony diameter and increased production of microsclerotia”

✓ located verbatim in the source · abstract, characters 209–326 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Metolachlor reduced colony diameter of Macrophomina phaseolina in the laboratory.

Taxon
grain sorghumSorghum bicolore0
Treatment
metolachlore0
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
fungal colony diametere1
Direction
reducede1
Setting
laboratorye1

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e1

“In laboratory studies, all three herbicides reduced fungal colony diameter and increased production of microsclerotia”

✓ located verbatim in the source · abstract, characters 209–326 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Atrazine increased production of microsclerotia by Macrophomina phaseolina in the laboratory.

Taxon
grain sorghumSorghum bicolore0
Treatment
atrazinee0
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
production of microsclerotiae1
Direction
increasede1
Setting
laboratorye1

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e1

“In laboratory studies, all three herbicides reduced fungal colony diameter and increased production of microsclerotia”

✓ located verbatim in the source · abstract, characters 209–326 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Alachlor increased production of microsclerotia by Macrophomina phaseolina in the laboratory.

Taxon
grain sorghumSorghum bicolore0
Treatment
alachlore0
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
production of microsclerotiae1
Direction
increasede1
Setting
laboratorye1

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e1

“In laboratory studies, all three herbicides reduced fungal colony diameter and increased production of microsclerotia”

✓ located verbatim in the source · abstract, characters 209–326 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Metolachlor increased production of microsclerotia by Macrophomina phaseolina in the laboratory.

Taxon
grain sorghumSorghum bicolore0
Treatment
metolachlore0
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
production of microsclerotiae1
Direction
increasede1
Setting
laboratorye1

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e1

“In laboratory studies, all three herbicides reduced fungal colony diameter and increased production of microsclerotia”

✓ located verbatim in the source · abstract, characters 209–326 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Alachlor reduced germination of fungal microsclerotia.

Taxon
grain sorghumSorghum bicolore0
Treatment
Alachlore2
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
germination of fungal microsclerotiae2
Direction
reducede2

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e2

“Alachlor and metolachlor reduced germination of fungal microsclerotia”

✓ located verbatim in the source · abstract, characters 328–397 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Metolachlor reduced germination of fungal microsclerotia.

Taxon
grain sorghumSorghum bicolore0
Treatment
metolachlore2
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
germination of fungal microsclerotiae2
Direction
reducede2

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e2

“Alachlor and metolachlor reduced germination of fungal microsclerotia”

✓ located verbatim in the source · abstract, characters 328–397 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Atrazine did not affect germination of microsclerotia.

Taxon
grain sorghumSorghum bicolore0
Treatment
Atrazinee3
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
microsclerotia germinatione3
Direction
did not affecte3

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e3

“Atrazine did not affect microsclerotia germination, but lessened the effects of alachlor and metolachlor on germination when applied in combination”

✓ located verbatim in the source · abstract, characters 399–546 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Atrazine lessened the effects of alachlor and metolachlor on microsclerotia germination when applied in combination.

Taxon
grain sorghumSorghum bicolore0
Treatment
applied in combinatione3
Interactor
Macrophomina phaseolinaMacrophomina phaseolinae0pathogen
Outcome
effects of alachlor and metolachlor on germinatione3
Direction
lessenede3
Comparator
alachlor and metolachlore3

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e3

“Atrazine did not affect microsclerotia germination, but lessened the effects of alachlor and metolachlor on germination when applied in combination”

✓ located verbatim in the source · abstract, characters 399–546 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Atrazine reduced numbers of Macrophomina phaseolina microsclerotia recovered from soil after 8 weeks in greenhouse studies.

Taxon
grain sorghumSorghum bicolore0
Treatment
atrazinee4
Interactor
M. phaseolinaMacrophomina phaseolinae4pathogen
Outcome
numbers of M. phaseolina microsclerotia recovered from soile4
Direction
reducede4
Setting
greenhouse studiese4

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e4

“In greenhouse studies, atrazine reduced numbers of M. phaseolina microsclerotia recovered from soil after 8 wk, and this resulted in reduced colonization of roots by this fungus at harvest”

✓ located verbatim in the source · abstract, characters 548–736 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Atrazine reduced colonization of grain sorghum roots by Macrophomina phaseolina at harvest in greenhouse studies.

Taxon
grain sorghumSorghum bicolore0
Treatment
atrazinee4
Interactor
M. phaseolinaMacrophomina phaseolinae4pathogen
Outcome
colonization of roots by this funguse4
Direction
reducede4
Qualifier
at harveste4
Setting
greenhouse studiese4

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e4

“In greenhouse studies, atrazine reduced numbers of M. phaseolina microsclerotia recovered from soil after 8 wk, and this resulted in reduced colonization of roots by this fungus at harvest”

✓ located verbatim in the source · abstract, characters 548–736 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Alachlor did not affect colonization of grain sorghum roots by Macrophomina phaseolina.

Taxon
grain sorghumSorghum bicolore5
Treatment
alachlore5
Interactor
M. phaseolinaMacrophomina phaseolinae5pathogen
Outcome
Colonization of grain sorghum roots by M. phaseolinae5
Direction
was not affectede5

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e5

“Colonization of grain sorghum roots by M. phaseolina was not affected by alachlor or metolachlor”

✓ located verbatim in the source · abstract, characters 738–834 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Metolachlor did not affect colonization of grain sorghum roots by Macrophomina phaseolina.

Taxon
grain sorghumSorghum bicolore5
Treatment
metolachlore5
Interactor
M. phaseolinaMacrophomina phaseolinae5pathogen
Outcome
Colonization of grain sorghum roots by M. phaseolinae5
Direction
was not affectede5

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗
Macrophomina phaseolina
Macrophomina phaseolina · InteractorEdward L. Barnard, Florida Department of Agriculture and Consumer Services · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Laboratory and greenhouse studies examined effects of atrazine, alachlor, and metolachlor on growth and colonization of grain sorghum roots by Macrophomina phaseolina”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e5

“Colonization of grain sorghum roots by M. phaseolina was not affected by alachlor or metolachlor”

✓ located verbatim in the source · abstract, characters 738–834 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Atrazine reduced grain sorghum growth at all intervals.

Taxon
Grain sorghumSorghum bicolore6
Treatment
atrazinee6
Outcome
growthe6
Direction
reducede6
Qualifier
at all intervalse6

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e6

“Grain sorghum growth was reduced by atrazine at all intervals and by alachlor and metolachlor at harvest, despite use of seed safened with cyometrinil”

✓ located verbatim in the source · abstract, characters 836–986 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Alachlor reduced grain sorghum growth at harvest.

Taxon
Grain sorghumSorghum bicolore6
Treatment
alachlore6
Outcome
growthe6
Direction
reducede6
Qualifier
at harveste6

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e6

“Grain sorghum growth was reduced by atrazine at all intervals and by alachlor and metolachlor at harvest, despite use of seed safened with cyometrinil”

✓ located verbatim in the source · abstract, characters 836–986 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Metolachlor reduced grain sorghum growth at harvest.

Taxon
Grain sorghumSorghum bicolore6
Treatment
metolachlore6
Outcome
growthe6
Direction
reducede6
Qualifier
at harveste6

Not reportedComparator

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

Sorghum bicolor
Sorghum bicolor · TaxonNo machine-readable author provided. Pethan assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e6

“Grain sorghum growth was reduced by atrazine at all intervals and by alachlor and metolachlor at harvest, despite use of seed safened with cyometrinil”

✓ located verbatim in the source · abstract, characters 836–986 · show in text ↑

metolachlor · growth · Sorghum bicolor (sorghum)Positive and negative results

3 papers: 1 positive, 2 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. negative
See all 3 papers →

atrazine · growth · Sorghum bicolor (sorghum)Positive and negative results

9 papers: 5 positive, 4 negative or no effect

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

  1. positive
  2. positive
  3. positive

5 papers more in this group

See all 9 papers →

alachlor · growth · Sorghum bicolor (sorghum)Results agree

4 papers: 0 positive, 4 negative or no effect

3 papers in the same direction as this paper

  1. no effect
  2. negative
  3. negative
See all 4 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.