Abstract
Losses in tomato (Solanum lycopersicum) production in Zimbabwe have been attributed to Pythium spp induced damping–off. Current research trends in seedling production suggest that Trichoderma harzianum has a positive effect on nursery diseases. T. harzianum uses a variety of mechanisms to colonise various ecological niches. Different plant varieties have different affinity levels for T. harzianum. In this research an evaluation was done on the effect of four different rates of T. harzianum (0cfu/ml, 105cfu/ml, 106cfu/ml and 107cfu/ml) and four tomato varieties namely Floradade, Money-maker, Rodade and Star 9064 in controlling Pythium spp damping-off. A 4x4 factorial experiment was laid in a completely randomized design with three replicates. Four different tomato varieties were primed with T. harzianum suspension for 24 hours and then sown in float trays according to the experimental design. Data was collected on emergence percentage, growth (number of true leaves and plant height); damping-off incidence and severity and dry weight. There was a significant interaction (P=0.001) between T. harzianum and variety on all parameters. T. harzianum 106cfu/ml and T. harzianum 107cfu/ml had no disease incidence and severity recorded on all tomato varieties. Emergence percentage, number of true leaves and dry weight increased on Money-maker and Star 9064 with an increase in T. harzianum rate. T. harzianum did not induce an increase on Rodade plant height. This study was carried out in the view of the use of T. harzianum as a bio-control strategy for Pythium-induced damping-off on tomato seedlings.
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 6
Claim · model-written summary
Trichoderma and tomato variety interacted significantly for all measured parameters.
- Taxon
- tomato (Solanum lycopersicum)
Solanum lycopersicumt0 - Material
- varietye0
- Treatment
- T. harzianume0
- Interactor
- T. harzianum
Trichoderma harzianume0biocontrol_agent - Outcome
- all parameterse0
- Value
- P=0.001e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant interaction (P=0.001) between T. harzianum and variety on all parameters.”
t0“Evaluation of Trichoderma harzianum in controlling damping-off (Pythiumspp) on tomato (Solanum lycopersicum) seedling varieties”
Claim · model-written summary
At 106cfu/ml Trichoderma, no damping-off incidence or severity was recorded across tomato varieties.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- T. harzianum 106cfu/mle0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- disease incidence and severitye0
- Direction
- noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum 106cfu/ml and T. harzianum 107cfu/ml had no disease incidence and severity recorded on all tomato varieties.”
Claim · model-written summary
At 107cfu/ml Trichoderma, no damping-off incidence or severity was recorded across tomato varieties.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- T. harzianum 107cfu/mle0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- disease incidence and severitye0
- Direction
- noe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum 106cfu/ml and T. harzianum 107cfu/ml had no disease incidence and severity recorded on all tomato varieties.”
Claim · model-written summary
Emergence percentage, true leaves and dry weight rose with Trichoderma rate in Money-maker.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Material
- Money-makere0
- Treatment
- T. harzianum ratee0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- Emergence percentage, number of true leaves and dry weighte0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence percentage, number of true leaves and dry weight increased on Money-maker and Star 9064 with an increase in T. harzianum rate.”
t0“Evaluation of Trichoderma harzianum in controlling damping-off (Pythiumspp) on tomato (Solanum lycopersicum) seedling varieties”
Claim · model-written summary
Emergence percentage, true leaves and dry weight rose with Trichoderma rate in Star 9064.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Material
- Star 9064e0
- Treatment
- T. harzianum ratee0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- Emergence percentage, number of true leaves and dry weighte0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence percentage, number of true leaves and dry weight increased on Money-maker and Star 9064 with an increase in T. harzianum rate.”
t0“Evaluation of Trichoderma harzianum in controlling damping-off (Pythiumspp) on tomato (Solanum lycopersicum) seedling varieties”
Claim · model-written summary
Trichoderma did not increase Rodade plant height.
- Taxon
- tomato (Solanum lycopersicum)Solanum lycopersicumt0
- Material
- Rodadee0
- Treatment
- T. harzianume0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- plant heighte0
- Direction
- did not induce an increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum did not induce an increase on Rodade plant height.”
t0“Evaluation of Trichoderma harzianum in controlling damping-off (Pythiumspp) on tomato (Solanum lycopersicum) seedling varieties”
The same questions in other papers
Trichoderma harzianum · disease · Solanum lycopersicum (tomato)Positive and negative results
41 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- no effect
41 papers more in this group
See all 45 papers →Trichoderma harzianum · growth · Solanum lycopersicum (tomato)Positive and negative results
1 paper in the same direction as this paper · 63 in the opposite direction
- positive
- positive
- positive
61 papers more in this group
See all 65 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.