Abstract
Abstract: Soybean [Glycine max (L.) Merrill] is an important crop in Ethiopia. However, its productivity is constrained by a number of factors among which soil salinity is one the major problems. Therefore, field and greenhouse experiments were conducted to examine the effectiveness of exotic and locally isolated Bradyrhizobium spp. nodulating soybean in a saline soil containing high soil N in Shinille area, Somali region, Ethiopia. The treatments of the glasshouse experiment consisted of effective isolates of bradyrhizobia nodulating soybean (TAL-379, UK isolate, and isolate) and an improved genotype of soybean. The treatments of the field experiment consisted of three bradyrhizobia isolates and control check. All treatments were replicated three times. The results of the experiments showed that inoculation significantly improved nodulation, growth, and productivity of soybean over the control treatment. Among the inoculation treatments, isolate and UK isolate inoculation significantly (P < 0.05) improved the nodulation and grain yield of soybean over the TAL-379 treatment. All investigated traits, except grain yield, did not display significant differences in response to the inoculation treatments. This indicates soil properties measured and evaluated at the late stages of growth of the crop especially native soil nitrogen content was high. The regression analysis indicated significant association of nodule number and nodule dry weight with highest R2 scored in isolate inoculation. The multiple regression analysis revealed that nodulation and plant tissue nitrogen concentration had strong relationships with grain yield, indicating the importance of symbiotic nitrogen fixation. Hence, inoculation of elite isolate of Bradyrhizobium sp. improved the yield of the soybean in saline soils. Although Bradyrhizobium inoculation improved remakablely the productivity of soybean, the yield gap is still very wide as compared to the potential yield reported elsewhere. Therefore, further research is required to improve the yield of the crop by diagnosing othr soil constraints in the region. Keywords: Glycine max (L.) Merrill; Grain Yield; Inoculation; Isolate; Nodule Number; Nodule Dry Weight; Saline Soils
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Claims 7
Claim · model-written summary
Inoculation improved soybean nodulation, growth, and productivity over the control.
- Taxon
- soybean
Glycine maxe0 - Treatment
- inoculatione0
- Interactor
- Bradyrhizobium spp.
Bradyrhizobiumt0symbiont - Outcome
- nodulation, growth, and productivitye0
- Direction
- improvede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“inoculation significantly improved nodulation, growth, and productivity of soybean over the control treatment”
t0“Response of Soybean to Inoculation with Bradyrhizobium spp. in Saline Soils of Shinille Plains, Eastern Ethiopia”
Claim · model-written summary
The isolate inoculation improved soybean nodulation and grain yield over TAL-379.
- Taxon
- soybeanGlycine maxe0
- Treatment
- isolatee0
- Interactor
- isolatee0symbiont
- Outcome
- nodulation and grain yielde0
- Direction
- improvede0
- Comparator
- TAL-379 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolate and UK isolate inoculation significantly (P < 0.05) improved the nodulation and grain yield of soybean over the TAL-379 treatment”
Claim · model-written summary
UK isolate inoculation improved soybean nodulation and grain yield over TAL-379.
- Taxon
- soybeanGlycine maxe0
- Treatment
- UK isolate inoculatione0
- Interactor
- UK isolatee0symbiont
- Outcome
- nodulation and grain yielde0
- Direction
- improvede0
- Comparator
- TAL-379 treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isolate and UK isolate inoculation significantly (P < 0.05) improved the nodulation and grain yield of soybean over the TAL-379 treatment”
Claim · model-written summary
Traits other than grain yield did not differ significantly among inoculation treatments.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- All investigated traits, except grain yielde0
- Direction
- did not display significant differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All investigated traits, except grain yield, did not display significant differences in response to the inoculation treatments”
t0“Response of Soybean to Inoculation with Bradyrhizobium spp. in Saline Soils of Shinille Plains, Eastern Ethiopia”
Claim · model-written summary
Nodule number and nodule dry weight were significantly associated, with the highest R2 under isolate inoculation.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- isolate inoculatione0
- Outcome
- nodule number and nodule dry weighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The regression analysis indicated significant association of nodule number and nodule dry weight with highest R2 scored in isolate inoculation”
t0“Response of Soybean to Inoculation with Bradyrhizobium spp. in Saline Soils of Shinille Plains, Eastern Ethiopia”
Claim · model-written summary
Nodulation and plant tissue nitrogen concentration had strong relationships with grain yield.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- plant tissuee0
- Outcome
- grain yielde0
- Qualifier
- strong relationshipse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nodulation and plant tissue nitrogen concentration had strong relationships with grain yield”
t0“Response of Soybean to Inoculation with Bradyrhizobium spp. in Saline Soils of Shinille Plains, Eastern Ethiopia”
Claim · model-written summary
The authors call for diagnosing other soil constraints to improve crop yield in the region.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- improve the yield of the crop by diagnosing othr soil constraintse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“further research is required to improve the yield of the crop by diagnosing othr soil constraints in the region”
t0“Response of Soybean to Inoculation with Bradyrhizobium spp. in Saline Soils of Shinille Plains, Eastern Ethiopia”
The same questions in other papers
inoculation · Bradyrhizobium · Glycine max (soybean)Positive and negative results
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- no effect
- negative
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See all 34 papers →inoculation · symbiosis · Glycine max (soybean)Positive and negative results
264 papers in the same direction as this paper · 43 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- positive
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See all 310 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.