Abstract
The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested. Bactericides were applied preventively one day before, or curatively one or three days after artificial inoculation with pathogen concentrations of 104, 105 and 107 cfu ml-1. The results indicated that a) preventive sprays were more effective than curative sprays; b) the effectiveness of curative sprays decreased progressively from the first to the third day; c) the infection was proportional to inoculum concentration, both in the water–sprayed (control) and in the bactericide–sprayed flowers. There was also significant interaction between bactericide and inoculum concentration. Best results were achieved with streptomycine (Agrept) at 0.5 g and 1 g l-1 H2O; oxolinic acid (S–0208) 1.5 g l-1 H2O; and flumequine (Firestop) 2 ml l-1 H2O. Kasugamycin (Kasumin), phosetyl–Al (Aliette) and copper hydroxide (Kocide) were less effective.
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Claims 8
Claim · model-written summary
Preventive sprays controlled fire blight more effectively than curative sprays.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise1 - Treatment
- preventive sprayse0
- Interactor
- Erwinia amylovora
Erwinia amylovorat0pathogen - Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- curative sprayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“preventive sprays were more effective than curative sprays”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
Claim · model-written summary
Curative spray effectiveness declined between the first and third day after inoculation.
- Taxon
- pearPyrus communise1
- Treatment
- curative sprayse0
- Interactor
- Erwinia amylovoraErwinia amylovorat0pathogen
- Outcome
- effectiveness of curative sprayse0
- Direction
- decreasede0
- Qualifier
- from the first to the third daye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effectiveness of curative sprays decreased progressively from the first to the third day”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
Claim · model-written summary
Pear flower infection rose with inoculum concentration under water and bactericide sprays.
- Taxon
- pearPyrus communise1
- Treatment
- inoculum concentratione0
- Interactor
- Erwinia amylovoraErwinia amylovorat0pathogen
- Outcome
- infectione0
- Direction
- increaseinferrede0
- Qualifier
- both in the water–sprayed (control) and in the bactericide–sprayed flowerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the infection was proportional to inoculum concentration, both in the water–sprayed (control) and in the bactericide–sprayed flowers”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
Claim · model-written summary
Bactericide and inoculum concentration had a significant interaction.
- Taxon
- pearPyrus communise1
- Treatment
- bactericide and inoculum concentratione0
- Interactor
- Erwinia amylovoraErwinia amylovorat0pathogen
- Outcome
- interactione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was also significant interaction between bactericide and inoculum concentration”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
Claim · model-written summary
Streptomycine at 0.5 and 1 g l-1 H2O gave among the best fire blight control results.
- Taxon
- pearPyrus communise1
- Treatment
- streptomycine (Agrept) at 0.5 g and 1 g l-1 H2Oe0
- Interactor
- Erwinia amylovoraErwinia amylovorat0pathogen
- Outcome
- Best resultse0
- Direction
- Beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Best results were achieved with streptomycine (Agrept) at 0.5 g and 1 g l-1 H2O”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
Claim · model-written summary
Oxolinic acid at 1.5 g l-1 H2O gave among the best fire blight control results.
- Taxon
- pearPyrus communise1
- Treatment
- oxolinic acid (S–0208) 1.5 g l-1 H2Oe0
- Interactor
- Erwinia amylovoraErwinia amylovorat0pathogen
- Outcome
- oxolinic acide0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oxolinic acid (S–0208) 1.5 g l-1 H2O”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
Claim · model-written summary
Flumequine at 2 ml l-1 H2O gave among the best fire blight control results.
- Taxon
- pearPyrus communise1
- Treatment
- flumequine (Firestop) 2 ml l-1 H2Oe0
- Interactor
- Erwinia amylovoraErwinia amylovorat0pathogen
- Outcome
- flumequinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flumequine (Firestop) 2 ml l-1 H2O”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
Claim · model-written summary
Kasugamycin, phosetyl–Al and copper hydroxide were less effective against fire blight.
- Taxon
- pearPyrus communise1
- Treatment
- Kasugamycin (Kasumin), phosetyl–Al (Aliette) and copper hydroxide (Kocide)e0
- Interactor
- Erwinia amylovoraErwinia amylovorat0pathogen
- Outcome
- less effectivee0
- Direction
- less effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kasugamycin (Kasumin), phosetyl–Al (Aliette) and copper hydroxide (Kocide) were less effective”
e1“The efficacy of various bactericides for the control of fire blight (Erwinia amylovora) in pear flowers was tested”
t0“Erwinia amylovora”
The same questions in other papers
application · Erwinia amylovora · Pyrus communis (pear)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.