Abstract
Experiments were designed to investigate biological nitrogen fixation in indeterminate (climbing) bean cultivars namely Cargamanto, NG224-4 and G59/1-2. Greenhouse and field studies were carried out to determine the most efficient bean cultivars and rhizobia strains in nitrogen fixation. Each cultivar was inoculated with the rhizobia strains CIAT 899, USDA 2674, USDA 2676, the three strains combined and one was not inoculated. There were no statistical differences in nodulation between the different inoculant treatments but in the field, beans inoculated with rhizobia strain USDA 2676 formed the highest nodule number. The bean cultivars inoculated with a mixture of the three rhizobia strains gave the highest total plant dry weight. Treatments within each of the cultivars showed differences in total plant dry weight yield in response to rhizobia strain used. Field experiments showed that plant dry weight differed significantly between cultivars but there were no significant differences in yields. Keywords: Climbing beans, rhizobium, nitrogen fixation, inoculation, Central Kenya.
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Claims 6
Claim · model-written summary
Nodulation did not differ statistically among inoculant treatments.
- Taxon
- climbing beant0
- Treatment
- different inoculant treatmentse0
- Outcome
- nodulatione0
- Direction
- no statistical differencese0
Not reportedComparator
Verbatim
e0“There were no statistical differences in nodulation between the different inoculant treatments”
t0“climbing bean”
Claim · model-written summary
USDA 2676 inoculated field beans formed the highest nodule number.
- Taxon
- beanse0
- Treatment
- inoculated with rhizobia strain USDA 2676e0
- Interactor
- rhizobia strain USDA 2676e0symbiont
- Outcome
- nodule numbere0
- Direction
- higheste0
- Setting
- fielde0
Not reportedComparator
Verbatim
e0“in the field, beans inoculated with rhizobia strain USDA 2676 formed the highest nodule number”
Claim · model-written summary
Beans receiving the three-strain mixture had the highest dry weight.
- Taxon
- beane0
- Treatment
- inoculated with a mixture of the three rhizobia strainse0
- Interactor
- rhizobia strainse0symbiont
- Outcome
- total plant dry weighte0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“The bean cultivars inoculated with a mixture of the three rhizobia strains gave the highest total plant dry weight”
Claim · model-written summary
Plant dry weight yield differed among rhizobial treatments within cultivars.
- Taxon
- climbing beant0
- Treatment
- rhizobia straine0
- Interactor
- rhizobia straine0symbiont
- Outcome
- total plant dry weight yielde0
- Direction
- differencese0
Not reportedComparator
Verbatim
e0“Treatments within each of the cultivars showed differences in total plant dry weight yield in response to rhizobia strain used”
t0“climbing bean”
Claim · model-written summary
Field plant dry weight differed significantly between cultivars.
Verbatim
e0“Field experiments showed that plant dry weight differed significantly between cultivars”
t0“climbing bean”
Claim · model-written summary
Field yields did not differ significantly between cultivars.
Not reportedMaterial
Verbatim
e0“there were no significant differences in yields”
t0“climbing bean”
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