Abstract
The effect of primary inoculum sources of Xanthomonas campestris pv. phaseoli from infected seed, infested debris and soil on common bean (Phaseolus vulgaris) was studied in Ethiopia during the 1997 and 1998 cropping seasons. The inoculum sources initiated common bacterial blight (CBB) and influenced incidence and severity during early epidemics. The incidence, assessed at flowering in 1997 from beans grown on infested debris-inoculated plots, was higher by 59% than on beans from the treated seed plots. CBB on beans from untreated seed-planted and infested debris-inoculated plots was more severe than on beans from infested soil-inoculated plots. Bean seed yield and quality aspects were also influenced by the inoculum sources. Lower seedling emergence, stand count and seed yield were obtained from infested debris- and soil-inoculated plots. Seeds harvested from plots planted with treated seeds had the lowest proportion of discoloured seeds. Discoloured seeds were on average 5.3?26.4% lighter than normal seeds. Management options that highly reduce CBB primary inoculum should be promoted. Keywords: Primary Inoculum SourcesXanthomnas Campestris Pv PhaseoliPhaseolus VulgarisCommon Bacterial Blight Epidemics
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Claims 8
Claim · model-written summary
The primary inoculum sources initiated common bacterial blight and influenced incidence and severity during early epidemics in bean.
Not reportedComparatorDirection
Verbatim
t0“bean common bacterial blight”
e0“The inoculum sources initiated common bacterial blight (CBB) and influenced incidence and severity during early epidemics”
Claim · model-written summary
CBB incidence at flowering in 1997 was 59% higher on beans from infested debris-inoculated plots than on beans from treated seed plots.
Verbatim
e0“The incidence, assessed at flowering in 1997 from beans grown on infested debris-inoculated plots, was higher by 59% than on beans from the treated seed plots”
Claim · model-written summary
CBB was more severe on beans from untreated-seed and infested-debris plots than on beans from infested-soil plots.
Verbatim
e0“CBB on beans from untreated seed-planted and infested debris-inoculated plots was more severe than on beans from infested soil-inoculated plots”
Claim · model-written summary
Bean seed yield and quality aspects were influenced by the inoculum sources.
Not reportedComparatorDirection
Verbatim
e0“Bean seed yield and quality aspects were also influenced by the inoculum sources”
Claim · model-written summary
Seedling emergence, stand count and seed yield were lower on infested debris- and soil-inoculated plots.
- Taxon
- beant0
- Treatment
- infested debris- and soil-inoculated plotse0
- Outcome
- seedling emergence, stand count and seed yielde0
- Direction
- Lowere0
Not reportedComparator
Verbatim
t0“bean common bacterial blight”
e0“Lower seedling emergence, stand count and seed yield were obtained from infested debris- and soil-inoculated plots”
Claim · model-written summary
Plots planted with treated seeds produced the lowest proportion of discoloured seeds.
- Taxon
- beant0
- Treatment
- plots planted with treated seedse0
- Outcome
- proportion of discoloured seedse0
- Direction
- loweste0
Not reportedComparator
Verbatim
t0“bean common bacterial blight”
e0“Seeds harvested from plots planted with treated seeds had the lowest proportion of discoloured seeds”
Claim · model-written summary
Discoloured seeds were on average 5.3 to 26.4% lighter than normal seeds.
Verbatim
t0“bean common bacterial blight”
e0“Discoloured seeds were on average 5.3?26.4% lighter than normal seeds”
Claim · model-written summary
Management options that strongly reduce primary CBB inoculum should be promoted.
Verbatim
t0“bean common bacterial blight”
e0“Management options that highly reduce CBB primary inoculum should be promoted”
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See all 12 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.