Abstract
Land degradation is a serious problem in arid regions, including in Central Asian countries. Soybean symbiosis with rhizobia microbes has an essential role in improving crop productivity and sustaining soil fertility in an arid environment. An experiment was conducted in light straw-colored sierozem soils in the Syrdarya region of Uzbekistan (41.4° N, 64.6° E) under arid conditions over the 2016–2017 and 2017–2018 growing seasons. This study aimed to assess the beneficial N fixation (BNF) ability of soybean in association with the Bradyrhizobium R6 strain and the Bradyrhizobium japonicum USDA110 strains and their combined effect on soil fertility and crop yield. The residues of winter wheat and soybean improved soil structure, i.e., soil humus and N and P contents, significantly differing from those on the soybean followed by summer fallow treatment. Furthermore, soybean in association with dual inoculation had the highest N derived from the atmosphere (Ndfa) (62.9 kg N ha−1), followed by individual soybean treatments with the R6 and USDA110 strains at 51.9 and 40.6 kg N ha−1, respectively. Improved soil quality positively impacted crop output, increasing winter wheat and soybean yields by 36.5% and 34.6%, respectively. Likewise, the yield parameters, i.e., the number of pods, weight of grain per pods, and 1000 seeds were significantly higher in the inoculated treatment with the highest value observed in the dual-inoculated treatment. These results suggest the insertion of soybean with symbiotic bacteria into the cropping system has considerable potential to contribute to sustainable land management practices in arid zones.
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Claims 8
Claim · model-written summary
Residues of winter wheat and soybean improved soil humus, N and P contents significantly relative to soybean followed by summer fallow.
- Taxon
- soybean
Glycine maxe0 - Treatment
- residues of winter wheat and soybeane0
- Outcome
- soil humus and N and P contentse0
- Direction
- improvede0
- Comparator
- soybean followed by summer fallow treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The residues of winter wheat and soybean improved soil structure, i.e., soil humus and N and P contents, significantly differing from those on the soybean followed by summer fallow treatment”
Claim · model-written summary
Soybean with dual inoculation (R6 and USDA110) had the highest N derived from the atmosphere, 62.9 kg N ha-1.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- dual inoculatione0
- Interactor
- Bradyrhizobium
Bradyrhizobiumt0symbiont - Outcome
- N derived from the atmosphere (Ndfa)e0
- Direction
- higheste0
- Value
- 62.9 kg N ha−1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean in association with dual inoculation had the highest N derived from the atmosphere (Ndfa) (62.9 kg N ha−1)”
t0“Soybean with Bradyrhizobium”
Claim · model-written summary
Soybean inoculated with the R6 strain alone had N derived from the atmosphere of 51.9 kg N ha-1, lower than with dual inoculation.
- Taxon
- soybeanGlycine maxe0
- Treatment
- R6e0
- Interactor
- BradyrhizobiumBradyrhizobiumt0symbiont
- Outcome
- N derived from the atmosphere (Ndfa)e0
- Direction
- lowerinferrede0
- Value
- 51.9e0
- Comparator
- dual inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean in association with dual inoculation had the highest N derived from the atmosphere (Ndfa) (62.9 kg N ha−1), followed by individual soybean treatments with the R6 and USDA110 strains at 51.9 and 40.6 kg N ha−1, respectively”
t0“Soybean with Bradyrhizobium”
Claim · model-written summary
Soybean inoculated with the USDA110 strain alone had N derived from the atmosphere of 40.6 kg N ha-1, lower than with dual inoculation.
- Taxon
- soybeanGlycine maxe0
- Treatment
- USDA110e0
- Interactor
- BradyrhizobiumBradyrhizobiumt0symbiont
- Outcome
- N derived from the atmosphere (Ndfa)e0
- Direction
- lowerinferrede0
- Value
- 40.6 kg N ha−1e0
- Comparator
- dual inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybean in association with dual inoculation had the highest N derived from the atmosphere (Ndfa) (62.9 kg N ha−1), followed by individual soybean treatments with the R6 and USDA110 strains at 51.9 and 40.6 kg N ha−1, respectively”
t0“Soybean with Bradyrhizobium”
Claim · model-written summary
Improved soil quality increased winter wheat yield by 36.5%.
- Taxon
- winter wheat
Triticum aestivume0 - Treatment
- Improved soil qualitye0
- Outcome
- yieldse0
- Direction
- increasinge0
- Value
- 36.5%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improved soil quality positively impacted crop output, increasing winter wheat and soybean yields by 36.5% and 34.6%, respectively”
Claim · model-written summary
Improved soil quality increased soybean yield by 34.6%.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Improved soil qualitye0
- Outcome
- yieldse0
- Direction
- increasinge0
- Value
- 34.6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improved soil quality positively impacted crop output, increasing winter wheat and soybean yields by 36.5% and 34.6%, respectively”
Claim · model-written summary
Number of pods, grain weight per pod and 1000-seed weight of soybean were significantly higher in the inoculated treatment, highest in the dual-inoculated treatment.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- inoculated treatmente0
- Interactor
- BradyrhizobiumBradyrhizobiumt0symbiont
- Outcome
- number of pods, weight of grain per pods, and 1000 seedse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield parameters, i.e., the number of pods, weight of grain per pods, and 1000 seeds were significantly higher in the inoculated treatment with the highest value observed in the dual-inoculated treatment”
t0“Soybean with Bradyrhizobium”
Claim · model-written summary
The authors suggest that including soybean with symbiotic bacteria in the cropping system has considerable potential for sustainable land management in arid zones.
- Taxon
- soybeanGlycine maxe0
- Outcome
- sustainable land management practicese0
- Setting
- arid zonese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the insertion of soybean with symbiotic bacteria into the cropping system has considerable potential to contribute to sustainable land management practices in arid zones”
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