Abstract
Compost was used as soil treatment either single or mixed with Trichoderma harzianum, Pseudomonas flourescens and Glomus sp. to study their efficiency against guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii. In vitro, among different bacteria isolated from compost wash, two isolates showed strong inhibitory effect against mycelial growth of S. rolfsii and were identified as Bacillus subtilis and B amyloliquefaciens usingGenetic analyzer (Applied Biosystem, Hitachi 3500).In the present work, mixed compost and bioagents was used to decrease disease incidence of root rot in guar plants. In pot experiments, soil amended with compost alone or mixed with bioagents provided a good protection against root rot. Soil amended with compost mixed with T. harzianum or P. fluorescens were superior that produced 82.35% and 76.48% decrease, respectively. Microbial population in the plant rhizosphere increased significantly as a result of application of compost alone or mixed with bioagents. Negative correlation was found between disease incidence and microbial population in the rhizosphere. Also, Soil amended with compost alone or mixed with bioagents increased plant nutrient uptake and improved soil fertility (NPK). Marked decrease in sclerotia germination of the pathogen in the soil amended with compost alone or mixed with bioagents was recorded. Soil amended with compost mixed with T.harzianum or P. fluorescens completely inhibited sclerotia germination. The aforementioned treatment not only decreased disease incidence but also increased fresh and dry weights of the plant as well as number of nodules compared to untreated control. Pilot field experiments are required.
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Claims 11
Claim · model-written summary
Two compost-wash bacteria inhibited S. rolfsii mycelial growth and were identified as Bacillus subtilis and B amyloliquefaciens.
- Taxon
- guar
Cyamopsis tetragonolobae1 - Interactor
- S. rolfsii
Agroathelia rolfsiie0pathogene1 - Second interactor
- Bacillus subtilis
Bacillus subtilise0biocontrol_agent - Outcome
- inhibitory effect against mycelial growth of S. rolfsiie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two isolates showed strong inhibitory effect against mycelial growth of S. rolfsii and were identified as Bacillus subtilis and B amyloliquefaciens”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
Compost alone or with bioagents protected guar against root rot.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- compost alone or mixed with bioagentse0
- Interactor
- Sclerotium rolfsiiAgroathelia rolfsiie1pathogen
- Outcome
- protection against root rote0
- Direction
- good protectione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil amended with compost alone or mixed with bioagents provided a good protection against root rot.”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
Compost with T. harzianum reduced root rot by 82.35%.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- compost mixed with T. harzianume0
- Interactor
- Sclerotium rolfsiiAgroathelia rolfsiie1pathogen
- Second interactor
- T. harzianum
Trichoderma harzianume0biocontrol_agent - Outcome
- root rote1
- Direction
- decreasee0
- Value
- 82.35%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with compost mixed with T. harzianum or P. fluorescens were superior that produced 82.35% and 76.48% decrease, respectively.”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
Compost with P. fluorescens reduced root rot by 76.48%.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- compost mixed with T. harzianum or P. fluorescense0
- Interactor
- Sclerotium rolfsiiAgroathelia rolfsiie1pathogen
- Second interactor
- P. fluorescens
.JPG?width=60)
Pseudomonas fluorescense0biocontrol_agent - Outcome
- root rote1
- Direction
- decreasee0
- Value
- 76.48%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“Soil amended with compost mixed with T. harzianum or P. fluorescens were superior that produced 82.35% and 76.48% decrease, respectively.”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
Compost alone or with bioagents significantly increased rhizosphere microbial populations.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- application of compost alone or mixed with bioagentse0
- Outcome
- Microbial population in the plant rhizospheree0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial population in the plant rhizosphere increased significantly as a result of application of compost alone or mixed with bioagents.”
e1“guar (Cyamopsis tetragonoloba)”
Claim · model-written summary
Root rot incidence was negatively correlated with rhizosphere microbial population.
- Taxon
- guarCyamopsis tetragonolobae1
- Interactor
- Sclerotium rolfsiiAgroathelia rolfsiie1pathogen
- Outcome
- disease incidencee0
- Direction
- Negative correlatione0
- Qualifier
- microbial population in the rhizospheree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Negative correlation was found between disease incidence and microbial population in the rhizosphere.”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
Compost alone or with bioagents increased guar nutrient uptake and improved soil NPK fertility.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- compost alone or mixed with bioagentse0
- Outcome
- plant nutrient uptake and improved soil fertility (NPK)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with compost alone or mixed with bioagents increased plant nutrient uptake and improved soil fertility (NPK).”
e1“guar (Cyamopsis tetragonoloba)”
Claim · model-written summary
Compost alone or with bioagents decreased pathogen sclerotia germination.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- compost alone or mixed with bioagentse0
- Interactor
- Sclerotium rolfsiiAgroathelia rolfsiie1pathogen
- Outcome
- sclerotia germination of the pathogene0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Marked decrease in sclerotia germination of the pathogen in the soil amended with compost alone or mixed with bioagents was recorded.”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
Compost with T.harzianum completely inhibited sclerotia germination.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- compost mixed with T.harzianume0
- Interactor
- Sclerotium rolfsiiAgroathelia rolfsiie1pathogen
- Second interactor
- T.harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- sclerotia germinatione0
- Direction
- completely inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with compost mixed with T.harzianum or P. fluorescens completely inhibited sclerotia germination.”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
Compost with P. fluorescens completely inhibited sclerotia germination.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- compost mixed with T.harzianum or P. fluorescense0
- Interactor
- Sclerotium rolfsiiAgroathelia rolfsiie1pathogen
- Second interactor
- P. fluorescensPseudomonas fluorescense0biocontrol_agent
- Outcome
- sclerotia germinatione0
- Direction
- completely inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil amended with compost mixed with T.harzianum or P. fluorescens completely inhibited sclerotia germination.”
e1“guar (Cyamopsis tetragonoloba) root rot caused by Sclerotium rolfsii”
Claim · model-written summary
The treatments increased plant fresh and dry weight and nodule number relative to untreated controls.
- Taxon
- guarCyamopsis tetragonolobae1
- Treatment
- aforementioned treatmente0
- Outcome
- fresh and dry weights of the plant as well as number of nodulese0
- Direction
- increasede0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The aforementioned treatment not only decreased disease incidence but also increased fresh and dry weights of the plant as well as number of nodules compared to untreated control.”
e1“guar (Cyamopsis tetragonoloba)”
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