Abstract
ABSTRACT: Damping-off of tomato caused by Pythium aphanidermatum was reduced by the application of talc based formulation of Trichoderma viride and Pseudomonas fluorescens in nursery beds before sowing. Besides reducing the pre- and post-emergence damping off these antagonists ' increased the root length, shoot length and biomass produ~ion of tomato seedlings. These antagonists significantly reduced the population of P. aphanidermatum in soil. Key words: Damping off, Pythium aphanidermatum, biocontrol, Trichoderma viride, Pseudomonas fluorescens Tomato, an important vegetable crop is attacked by several diseases, caused by fungi, bacteria and vi-ruses leading to severe crop losses. Among the fungal diseases, the damping off incited by Pythium aphanidermatum in nurseries is a major constraint in the production of tomato. Pythium spp. are essentially soil borne (Berkley, 1925; Horsfall, 1930) and pose a greater problem in disease management. The most com-mon means to check the disease in nurseries is by using fungicides but frequent and indiscriminate use of fun-gicides often leads to atmospheric pollution and devel-opment of fungicide resistance in pathogens. In this context, biological control is coming up as an alterna-tive strategy for disease management which is also ecology- conscious and environment friendly. Several organisms have been successfully used as biocontrol agents, such as Trichoderma spp. (Raguchander et al., 1997), Bacillus spp. (Copper and Campbell, 1986) and Pseudomonas spp. (Vidhyaksekaran and Muthamilan, 1995). In the present study, attempts were made to assess the effect of talc-based formulations of Tricho-derma viride and Pseudomonas fluorescens on damp-ing off and seedling growth of tomato and soil popu-lation of Pythium aphanidermatum under field condtions.
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Claims 3
Claim · model-written summary
Talc formulations of Trichoderma viride and Pseudomonas fluorescens reduced tomato damping off.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- talc based formulation of Trichoderma viride and Pseudomonas fluorescense0
- Interactor
- Pythium aphanidermatumPythium aphanidermatume0pathogen
- Second interactor
- Trichoderma viride
Trichoderma viridee0biocontrol_agent - Outcome
- Damping-off of tomatoe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Damping-off of tomato caused by Pythium aphanidermatum was reduced by the application of talc based formulation of Trichoderma viride and Pseudomonas fluorescens in nursery beds before sowing”
Claim · model-written summary
The antagonists increased tomato seedling root length, shoot length and biomass.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- these antagonistse0
- Outcome
- root length, shoot length and biomass produ~ione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these antagonists ' increased the root length, shoot length and biomass produ~ion of tomato seedlings”
Claim · model-written summary
The antagonists significantly reduced soil P. aphanidermatum populations.
- Treatment
- These antagonistse0
- Interactor
- P. aphanidermatumPythium aphanidermatume0pathogen
- Outcome
- population of P. aphanidermatum in soile0
- Direction
- reducede0
Not reportedTaxonComparator
Verbatim
e0“These antagonists significantly reduced the population of P. aphanidermatum in soil”
The same questions in other papers
Pseudomonas fluorescens · Pythium aphanidermatum · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
Trichoderma viride · Pythium aphanidermatum · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
biocontrol · growth · Solanum lycopersicum (tomato)Positive and negative results
27 papers in the same direction as this paper · 1 reporting no difference from an alternative
- positive
- no effect
- positive
25 papers more in this group
See all 29 papers →biocontrol · Pythium aphanidermatum · Solanum lycopersicum (tomato)Results agree
1 paper in the same direction as this paper
- positive
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.