Abstract
Identification of effective indigenous rhizobia isolates would lead to development of efficient and affordable rhizobia inoculants. These can promote nitrogen fixation in smallholder farming systems of Kenya. To realize this purpose, two experiments were conducted under greenhouse conditions using two common bean cultivars; Mwezi moja (bush type) and Mwitemania (climbing type) along with soybean cultivar SB 8. In the first experiment, the common bean cultivars were treated with rhizobia inoculants including a consortium of native isolates, commercial isolate (CIAT 899), a mixture of native isolates and CIAT 899, and a control with no inoculation. After 30 days, the crop was assessed for nodulation, shoot and root dry weights, and morphological features. In the second experiment, soybean was inoculated with a consortium of native isolates, commercial inoculant (USDA 110), and a mixture of commercial and native isolates. Remarkably, the native isolates significantly (p<0.001) increased nodulation and shoot dry weight across the two common bean varieties compared to the commercial inoculant, CIAT 899. Mixing of the native rhizobia species and commercial inoculant did not show any further increase in nodulation and shoot performance in both crops. Further field studies will ascertain the effectiveness and efficiency of the tested indigenous isolates.
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Claims 4
Claim · model-written summary
Native isolates increased nodulation in both common bean varieties relative to CIAT 899.
- Taxon
- common bean
Phaseolus vulgarise0 - Treatment
- native isolatese0
- Interactor
- native isolatese0symbiont
- Outcome
- nodulatione0
- Direction
- increasede0
- Comparator
- commercial inoculant, CIAT 899e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the native isolates significantly (p<0.001) increased nodulation and shoot dry weight across the two common bean varieties compared to the commercial inoculant, CIAT 899”
t0“Common Bean and Soybean”
Claim · model-written summary
Native isolates increased shoot dry weight in both common bean varieties relative to CIAT 899.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- native isolatese0
- Interactor
- native isolatese0symbiont
- Outcome
- shoot dry weighte0
- Direction
- increasede0
- Comparator
- commercial inoculant, CIAT 899e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the native isolates significantly (p<0.001) increased nodulation and shoot dry weight across the two common bean varieties compared to the commercial inoculant, CIAT 899”
t0“Common Bean and Soybean”
Claim · model-written summary
Mixing native and commercial inoculants did not further increase nodulation in both crops.
- Taxon
- cropse0
- Treatment
- Mixing of the native rhizobia species and commercial inoculante0
- Interactor
- native rhizobia speciese0symbiont
- Outcome
- nodulatione0
- Direction
- did not show any further increasee0
Not reportedComparator
Verbatim
e0“Mixing of the native rhizobia species and commercial inoculant did not show any further increase in nodulation and shoot performance in both crops.”
t0“Common Bean and Soybean”
Claim · model-written summary
Mixing native and commercial inoculants did not further increase shoot performance in both crops.
- Taxon
- cropse0
- Treatment
- Mixing of the native rhizobia species and commercial inoculante0
- Interactor
- native rhizobia speciese0symbiont
- Outcome
- shoot performancee0
- Direction
- did not show any further increasee0
Not reportedComparator
Verbatim
e0“Mixing of the native rhizobia species and commercial inoculant did not show any further increase in nodulation and shoot performance in both crops.”
t0“Common Bean and Soybean”
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inoculation · symbiosis · Phaseolus vulgaris (common bean)Positive and negative results
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