Abstract
Soil-borne diseases pose significant challenges to global potato cultivation, resulting in yield losses and economic implications. Utilizing biological control agents offers a sustainable and environmentally and friendly approach to manage these diseases. Before implementing the experiment in the field, a series of in-vitro tests were conducted to select a virulent isolate of the tested pathogens and an effective antagonistic isolate of Trichoderma harzianum. In the pathogenicity test, isolate RS-1 of Rhizoctonia solani and isolate SR-8 of Sclerotium rolfsii exhibited the highest virulence against two pathogens in potato variety ‘Cardinal’ in regard to seedling mortality (44.44-88.88%). During in vitro screening, T. harzianum isolate Tri 7 displayed the greatest ability to inhibit the mycelium growth of all tested pathogens. In the field trial, the highest seedling mortality (69.06%) was observed in T2 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii). However, the highest seedling mortality (86.94%) was reduced by treatment T7 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii +500g wheat grain colonized with Trichoderma fortified poultry compost). Treatment T7 also recorded the lowest incidences of stem canker (7.83%) and stem rot (8.64%), whereas the highest disease incidences occurred in the T2 treatment plot. Notably, treatment T7 gave the highest yield of 30.94 tons/ha, while the control plot T2 yielded the lowest at 12.17 tons/ha. Initially, Trichoderma population was minimal prior to the application of Trichoderma- fortified compost. However, populations gradually increased over time, peaking at 3 months across all treatments except the control, where no Trichoderma was applied. However, a decline in T. harzianum population was noted one month after potato harvesting. This approach offers a potential solution for managing potato soil-borne diseases in a sustainable and environmentally friendly manner. Ann. Bangladesh Agric. (2023) 27 (1): 81-92
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Claims 11
Claim · model-written summary
Rhizoctonia solani isolate RS-1 had the highest virulence on Cardinal potato seedlings.
- Taxon
- potato
Solanum tuberosumt0 - Material
- Cardinale0
- Interactor
- Rhizoctonia solani
Rhizoctonia solanie0pathogen - Outcome
- seedling mortalitye0
- Direction
- higheste0
- Value
- 44.44-88.88%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolate RS-1 of Rhizoctonia solani and isolate SR-8 of Sclerotium rolfsii exhibited the highest virulence against two pathogens in potato variety ‘Cardinal’ in regard to seedling mortality (44.44-88.88%)”
t0“potato”
Claim · model-written summary
Sclerotium rolfsii isolate SR-8 had the highest virulence on Cardinal potato seedlings.
- Taxon
- potatoSolanum tuberosumt0
- Material
- Cardinale0
- Interactor
- Sclerotium rolfsii
Agroathelia rolfsiie0pathogen - Outcome
- seedling mortalitye0
- Direction
- higheste0
- Value
- 44.44-88.88%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolate RS-1 of Rhizoctonia solani and isolate SR-8 of Sclerotium rolfsii exhibited the highest virulence against two pathogens in potato variety ‘Cardinal’ in regard to seedling mortality (44.44-88.88%)”
t0“potato”
Claim · model-written summary
Trichoderma isolate Tri 7 most strongly inhibited mycelial growth of tested pathogens.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- T. harzianum
Trichoderma harzianume0biocontrol_agent - Outcome
- mycelium growthe0
- Direction
- inhibite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum isolate Tri 7 displayed the greatest ability to inhibit the mycelium growth of all tested pathogens”
t0“potato”
Claim · model-written summary
The pathogen inoculated T2 field treatment had the highest potato seedling mortality of 69.06%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- T2 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii)e0
- Interactor
- R. solaniRhizoctonia solanie0pathogen
- Second interactor
- S. rolfsiiAgroathelia rolfsiie0pathogen
- Outcome
- seedling mortalitye0
- Direction
- higheste0
- Value
- 69.06%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest seedling mortality (69.06%) was observed in T2 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii)”
t0“potato”
Claim · model-written summary
T7 reduced potato seedling mortality by the reported 86.94%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- T7 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii +500g wheat grain colonized with Trichoderma fortified poultry compost)e0
- Outcome
- seedling mortalitye0
- Direction
- reducede0
- Value
- 86.94%e0
- Comparator
- T2e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest seedling mortality (86.94%) was reduced by treatment T7 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii +500g wheat grain colonized with Trichoderma fortified poultry compost)”
t0“potato”
e2“T2 (Fresh seeds+ Soil inoculated with R. solani and S. rolfsii)”
Claim · model-written summary
T7 had the lowest stem canker incidence, 7.83%.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- treatment T7e0
- Outcome
- stem cankere0
- Direction
- loweste0
- Value
- 7.83%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment T7 also recorded the lowest incidences of stem canker (7.83%) and stem rot (8.64%)”
t0“potato”
Claim · model-written summary
T7 had the lowest stem rot incidence, 8.64%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment T7 also recorded the lowest incidences of stem canker (7.83%) and stem rot (8.64%)”
t0“potato”
Claim · model-written summary
T7 produced the highest potato yield of 30.94 tons/ha.
- Taxon
- potatoSolanum tuberosumt0
- Treatment
- treatment T7e0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 30.94 tons/hae0
- Comparator
- control plot T2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment T7 gave the highest yield of 30.94 tons/ha, while the control plot T2 yielded the lowest at 12.17 tons/ha”
t0“potato”
Claim · model-written summary
T2 had the lowest potato yield of 12.17 tons/ha.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment T7 gave the highest yield of 30.94 tons/ha, while the control plot T2 yielded the lowest at 12.17 tons/ha”
t0“potato”
Claim · model-written summary
Trichoderma populations increased after application and peaked at three months except in the untreated control.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- TrichodermaTrichodermae0biocontrol_agent
- Outcome
- populationse0
- Direction
- increasede0
- Value
- 3 monthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“populations gradually increased over time, peaking at 3 months across all treatments except the control, where no Trichoderma was applied”
t0“potato”
Claim · model-written summary
Trichoderma harzianum population declined one month after potato harvesting.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- T. harzianum populatione0
- Direction
- declinee0
- Qualifier
- one month after potato harvestinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a decline in T. harzianum population was noted one month after potato harvesting”
t0“potato”
The same questions in other papers
Rhizoctonia solani · pest · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
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Trichoderma · pest · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
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inoculation · pest · Solanum tuberosum (potato)Positive and negative results
10 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
11 papers more in this group
See all 15 papers →fertilization · pest · Solanum tuberosum (potato)Positive and negative results
15 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- no effect
19 papers more in this group
See all 23 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.