Abstract
Inoculation of an industry standard light sphagnum peat potting mix with Trichoderma hamatum 382 (T382) significantly (P = 0.05) reduced the severity of Botrytis blight, caused by Botrytis cinerea, on begonia plants grown in a greenhouse. In data combined from three experiments, the degree of control provided by T382 did not differ significantly (P = 0.05) from that provided by weekly topical sprays with chlorothalonil. In addition, T382 significantly (P = 0.05) increased shoot dry weight and salability of flowering plants. Incorporation of composted cow manure (5%, vol/vol) into the light peat mix also significantly (P = 0.05) decreased blight severity while shoot dry weight and salability were increased. Blight severity on plants in this compost mix did not differ significantly (P = 0.05) from that on those in the light peat mix inoculated with T382. Finally, T382 and chlorothalonil did not significantly (P = 0.05) affect blight severity, shoot dry weight, or salability of plants grown in the compost mix. Spatial separation was maintained in begonias between the biocontrol agent T382 and the pathogen. It was concluded, therefore, that the decrease in disease severity provided by inoculation of the peat mix with T382 most likely was due to systemic resistance induced in begonia against Botrytis blight. The suppressive effect of the compost mix against Botrytis blight was unusual because composts typically do not provide such effects unless inoculated with a biocontrol agent capable of inducing systemic resistance in plants to disease.
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Claims 11
Claim · model-written summary
T382 inoculation of peat potting mix significantly reduced Botrytis blight severity on greenhouse begonias.
- Treatment
- Inoculation of an industry standard light sphagnum peat potting mix with Trichoderma hamatum 382 (T382)e0
- Interactor
- Botrytis cinerea
Botrytis cinereae0pathogen - Second interactor
- Trichoderma hamatum 382
Trichoderma hamatume0biocontrol_agent - Outcome
- severity of Botrytis blighte0
- Direction
- reducede0
- Setting
- greenhousee0
BegoniaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of an industry standard light sphagnum peat potting mix with Trichoderma hamatum 382 (T382) significantly (P = 0.05) reduced the severity of Botrytis blight, caused by Botrytis cinerea, on begonia plants grown in a greenhouse.”
Claim · model-written summary
T382 disease control did not significantly differ from weekly chlorothalonil sprays.
- Treatment
- T382e0
- Outcome
- degree of controle0
- Direction
- did not differe0
- Comparator
- weekly topical sprays with chlorothalonile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the degree of control provided by T382 did not differ significantly (P = 0.05) from that provided by weekly topical sprays with chlorothalonil.”
t0“Begonia”
Claim · model-written summary
T382 significantly increased shoot dry weight and salability.
- Organ / stage
- flowering plantse0
- Treatment
- T382e0
- Outcome
- shoot dry weight and salabilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T382 significantly (P = 0.05) increased shoot dry weight and salability of flowering plants.”
t0“Begonia”
Claim · model-written summary
Adding composted cow manure significantly decreased blight severity.
- Treatment
- Incorporation of composted cow manure (5%, vol/vol) into the light peat mixe0
- Outcome
- blight severitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incorporation of composted cow manure (5%, vol/vol) into the light peat mix also significantly (P = 0.05) decreased blight severity while shoot dry weight and salability were increased.”
t0“Begonia”
Claim · model-written summary
Adding compost increased shoot dry weight and salability.
- Treatment
- Incorporation of composted cow manure (5%, vol/vol) into the light peat mixe0
- Outcome
- shoot dry weight and salabilitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Incorporation of composted cow manure (5%, vol/vol) into the light peat mix also significantly (P = 0.05) decreased blight severity while shoot dry weight and salability were increased.”
t0“Begonia”
Claim · model-written summary
Blight severity in compost and T382-inoculated peat did not significantly differ.
- Treatment
- this compost mixe0
- Outcome
- Blight severitye0
- Direction
- did not differe0
- Comparator
- light peat mix inoculated with T382e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Blight severity on plants in this compost mix did not differ significantly (P = 0.05) from that on those in the light peat mix inoculated with T382.”
t0“Begonia”
Claim · model-written summary
In compost mix, T382 did not significantly affect blight severity, shoot dry weight or salability.
- Treatment
- T382e0
- Outcome
- blight severity, shoot dry weight, or salabilitye0
- Direction
- did not significantlye0
- Qualifier
- compost mixe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T382 and chlorothalonil did not significantly (P = 0.05) affect blight severity, shoot dry weight, or salability of plants grown in the compost mix.”
t0“Begonia”
Claim · model-written summary
In compost mix, chlorothalonil did not significantly affect blight severity, shoot dry weight or salability.
- Treatment
- chlorothalonile0
- Outcome
- blight severity, shoot dry weight, or salabilitye0
- Direction
- did not significantlye0
- Qualifier
- compost mixe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T382 and chlorothalonil did not significantly (P = 0.05) affect blight severity, shoot dry weight, or salability of plants grown in the compost mix.”
t0“Begonia”
Claim · model-written summary
T382 and the pathogen remained spatially separated in begonias.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spatial separation was maintained in begonias between the biocontrol agent T382 and the pathogen.”
Claim · model-written summary
The authors attribute T382 suppression of Botrytis blight most likely to induced systemic resistance.
- Treatment
- inoculation of the peat mix with T382e0
- Outcome
- decrease in disease severitye0
- Qualifier
- systemic resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease in disease severity provided by inoculation of the peat mix with T382 most likely was due to systemic resistance induced in begonia against Botrytis blight.”
Claim · model-written summary
The authors considered suppression by the uninoculated compost mix unusual.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The suppressive effect of the compost mix against Botrytis blight was unusual because composts typically do not provide such effects unless inoculated with a biocontrol agent capable of inducing systemic resistance in plants to disease.”
t0“Begonia”
The same questions in other papers
growing medium · growth · BegoniaPositive and negative results
1 paper in the same direction as this paper · 1 reporting no difference from an alternative
- no effect
- positive
light · growth · BegoniaPositive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- positive
2 papers more in this group
See all 6 papers →fertilization · growth · BegoniaPositive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
3 papers more in this group
See all 7 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.