Abstract
The impact of three pre-plant herbicides, pendimethalin, prometryn and trifluralin on the incidence and the development of Rhizoctonia solani-induced cotton seedling damping-off, on biocontrol activity of Burkholderia cepacia against R. solani, and on the efficacy of commonly used fungicides (metalaxyl, triadimenol, thiram) against R. solani-induced cotton seedling damping-off was investigated in the microcosm and in the field. In the microcosm experiments, pendimethalin, prometryn and trifluralin were applied to the soil at 2.4, 3.6 and 1.8 μg a.i. g⁻¹ soil, respectively (equivalent to the respective recommended field concentrations of 0.9, 1.3 and 0.7 kg a.i. ha⁻¹ In the microcosm experiments application of prometryn, to the soil caused a significant (P < 0.05) increase in pre-emergence damping-off incidence. Post emergence damping-off increased significantly (P < 0.05) in the presence of pendimethalin and prometryn. Biocontrol activity of B. cepacia (isolate D1) in controlling cotton seedling damping-off was significantly (P < 0.05) reduced by pendimethalin and prometryn in the microcosm experiments. In a field experiment conducted in Safford, Arizona, pre-plant application of pendimethalin or prometryn caused significant (P < 0.05) increases in disease incidence. In another field experiment in Tucson, Arizona, significant (P < 0.05) increase in disease incidence was observed in plots treated with prometryn. In both microcosm and field experiments, application of herbicides affected disease development as judged by the slope of disease progress curves. Biocontrol activity of an indigenous isolate (D1) of B. cepacia also was reduced significantly by pendimethalin and prometryn in both field experiments. Commercially available isolate (Deny®) of B. cepacia as a soil drench and as a seed treatment failed to protect cotton seedlings against R. solani-induced damping-off in both field experiments. The efficacy of commonly used fungicides (metalaxyl, triadimenol, thiram) against R. solani in the field was not significantly affected by herbicides in two field experiments at final assessment time. Pendimethalin and prometryn mediated changes in cotton seedling damping-off incidence and biocontrol activity of B. cepacia seem to be due to the changes in cotton seedlings susceptibility and changes in populations and structure of antagonistic bacteria in the plant rhizosphere.
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 10
Claim · model-written summary
Prometryn applied to soil increased pre-emergence damping-off incidence of cotton in microcosm experiments.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- prometryne1
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie0pathogen - Outcome
- pre-emergence damping-off incidencee1
- Direction
- increasee1
- Setting
- microcosm experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e0“The impact of three pre-plant herbicides, pendimethalin, prometryn and trifluralin on the incidence and the development of Rhizoctonia solani-induced cotton seedling damping-off”
e1“In the microcosm experiments application of prometryn, to the soil caused a significant (P < 0.05) increase in pre-emergence damping-off incidence”
Claim · model-written summary
Pendimethalin and prometryn significantly increased post-emergence damping-off of cotton seedlings.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- pendimethalin and prometryne2
- Interactor
- Rhizoctonia solaniRhizoctonia solanie0pathogen
- Outcome
- Post emergence damping-offe2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e0“The impact of three pre-plant herbicides, pendimethalin, prometryn and trifluralin on the incidence and the development of Rhizoctonia solani-induced cotton seedling damping-off”
e2“Post emergence damping-off increased significantly (P < 0.05) in the presence of pendimethalin and prometryn”
Claim · model-written summary
Pendimethalin and prometryn reduced the biocontrol activity of Burkholderia cepacia isolate D1 against Rhizoctonia solani in microcosm experiments.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- pendimethalin and prometryne3
- Interactor
- B. cepacia
Burkholderia cepaciae3biocontrol_agent - Second interactor
- Rhizoctonia solaniRhizoctonia solanie0pathogen
- Outcome
- Biocontrol activitye3
- Direction
- reducede3
- Setting
- microcosm experimentse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e0“The impact of three pre-plant herbicides, pendimethalin, prometryn and trifluralin on the incidence and the development of Rhizoctonia solani-induced cotton seedling damping-off”
e3“Biocontrol activity of B. cepacia (isolate D1) in controlling cotton seedling damping-off was significantly (P < 0.05) reduced by pendimethalin and prometryn in the microcosm experiments”
Claim · model-written summary
Pre-plant pendimethalin or prometryn significantly increased cotton disease incidence in a field experiment in Safford, Arizona.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- pre-plant application of pendimethalin or prometryne4
- Interactor
- Rhizoctonia solaniRhizoctonia solanie0pathogen
- Outcome
- disease incidencee4
- Direction
- increasese4
- Setting
- Safford, Arizonae4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e0“The impact of three pre-plant herbicides, pendimethalin, prometryn and trifluralin on the incidence and the development of Rhizoctonia solani-induced cotton seedling damping-off”
e4“In a field experiment conducted in Safford, Arizona, pre-plant application of pendimethalin or prometryn caused significant (P < 0.05) increases in disease incidence”
Claim · model-written summary
Prometryn significantly increased cotton disease incidence in a field experiment in Tucson, Arizona.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- prometryne5
- Interactor
- Rhizoctonia solaniRhizoctonia solanie0pathogen
- Outcome
- disease incidencee5
- Direction
- increasee5
- Setting
- Tucson, Arizonae5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e0“The impact of three pre-plant herbicides, pendimethalin, prometryn and trifluralin on the incidence and the development of Rhizoctonia solani-induced cotton seedling damping-off”
e5“In another field experiment in Tucson, Arizona, significant (P < 0.05) increase in disease incidence was observed in plots treated with prometryn”
Claim · model-written summary
Herbicide application affected cotton disease development in both microcosm and field experiments, judged by the slope of disease progress curves.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- application of herbicidese6
- Outcome
- disease developmente6
- Setting
- microcosm and field experimentse6
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e6“In both microcosm and field experiments, application of herbicides affected disease development as judged by the slope of disease progress curves”
Claim · model-written summary
Pendimethalin and prometryn significantly reduced the biocontrol activity of an indigenous B. cepacia isolate (D1) in field experiments.
- Taxon
- cottonGossypium hirsutumt0
- Material
- isolate (D1)e7
- Treatment
- pendimethalin and prometryne7
- Interactor
- B. cepaciaBurkholderia cepaciae7biocontrol_agent
- Outcome
- Biocontrol activitye7
- Direction
- reducede7
- Setting
- field experimentse7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e7“Biocontrol activity of an indigenous isolate (D1) of B. cepacia also was reduced significantly by pendimethalin and prometryn in both field experiments”
Claim · model-written summary
The commercial B. cepacia isolate failed to protect cotton seedlings against Rhizoctonia solani damping-off in field experiments.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- as a soil drench and as a seed treatmente1
- Interactor
- R. solaniRhizoctonia solanie1pathogen
- Second interactor
- B. cepaciaBurkholderia cepaciae1biocontrol_agent
- Outcome
- protect cotton seedlings against R. solani-induced damping-offe1
- Direction
- failede1
- Setting
- field experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e1“of B. cepacia as a soil drench and as a seed treatment failed to protect cotton seedlings against R. solani-induced damping-off in both field experiments”
Claim · model-written summary
Herbicides did not significantly change the efficacy of commonly used fungicides against Rhizoctonia solani in two field experiments.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- herbicidese1
- Interactor
- R. solaniRhizoctonia solanie1pathogen
- Compound
- metalaxyl, triadimenol, thirame1
- Outcome
- efficacy of commonly used fungicidese1
- Direction
- not significantly affectede1
- Setting
- two field experimentse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e1“The efficacy of commonly used fungicides (metalaxyl, triadimenol, thiram) against R. solani in the field was not significantly affected by herbicides in two field experiments at final assessment time”
Claim · model-written summary
Pendimethalin and prometryn may act by changing cotton seedling susceptibility and the antagonistic bacterial populations in the rhizosphere.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Pendimethalin and prometryne1
- Outcome
- cotton seedling damping-off incidencee1
- Qualifier
- changes in cotton seedlings susceptibilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cotton seedlings”
e1“Pendimethalin and prometryn mediated changes in cotton seedling damping-off incidence and biocontrol activity of B. cepacia seem to be due to the changes in cotton seedlings susceptibility”
The same questions in other papers
prometryn · Rhizoctonia solani · Gossypium hirsutum (cotton)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
pendimethalin · Rhizoctonia solani · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- negative
- negative
application · Rhizoctonia solani · Gossypium hirsutum (cotton)Positive and negative results
1 in the opposite direction
- positive
seed treatment · Rhizoctonia solani · Gossypium hirsutum (cotton)Positive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 papers →herbicide · Rhizoctonia solani · Gossypium hirsutum (cotton)Results agree
2 papers in the same direction as this paper
- no effect
- negative
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.