Abstract
Soybean varieties may respond differently to rhizobium inoculation, for im- proved yield and nitrogen fixation. Therefore, responses of ten soybean varieties to rhizobium were evaluated in 2018 at the Ladoke Akintola University of Tech- nology, Ogbomoso, Nigeria, to determine if rhizobium will improve the perfor- mance of the varieties. The soybean varieties (main plot) and rhizobium (+ or -, subplot) were arranged as split-plot in Completely Randomized Design with five replications. Data were collected on plant height, root, shoot, pod and seed dry weights and nitrogen fixation. Data were subjected to Analysis of Variance, and the treatment means were compared using the Least Significance Difference at 5% probability level. Generally, the non-inoculated plants were taller than inocu- lated ones. The soybean varieties exhibited pronounced variation in plant height without rhizobium inoculation. Variety TGX 2004-10F was the tallest while vari- ety TGX 1485-1D was the shortest. However, with rhizobium inoculation variety TGX 2010-12F was the tallest throughout the sampling period while variety TGX 1485-1D was still the shortest. Rhizobium inoculation had no significant effect on the shoot and root weights. On the average, variety TGX 2004-10F had the highest shoot (28.8 g/pot), and root (6.2 g/pot) weights and variety TGX 1485-1D produced the lowest shoot weight (9.5 g/pot). Varieties TGX 2008-2F and TGX 2008-4F had the lowest root weight (2.5 g/pot). Variety TGX 2010-12F was the most responsive to rhizobium in terms of the shoot (33.7% increase) and root (44.1% increase) weights. In comparison, variety TGX 2008-4F had the most negative response (-57.2% decrease) and (-100% decrease) in shoot and root weights, respectively. Rhizobium inoculation increased seed weight of almost all the varieties (9.4% - 35.4%). Rhizobium inoculation significantly enhanced nitro- gen fixed. However, the varieties exhibited differences in N fixed in response to rhizobium inoculation (range -28.3% to 48.7%). In conclusion, Bradyrhizobium japonicum inoculation has the potential to improve shoot, root, seed yield and N-fixed of selected soybean varieties while other varieties may show negative response
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Claims 17
Claim · model-written summary
Non-inoculated soybean plants were generally taller than inoculated plants.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- rhizobium inoculatione1
- Outcome
- plantse0
- Direction
- tallere0
- Comparator
- non-inoculated plantse0
RhizobiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, the non-inoculated plants were taller than inocu- lated ones”
t0“Soybean”
e1“with rhizobium inoculation variety TGX 2010-12F was the tallest throughout the sampling period”
Claim · model-written summary
Without inoculation, TGX 2004-10F was tallest and TGX 1485-1D shortest.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 2004-10Fe0
- Treatment
- rhizobium inoculatione1
- Outcome
- talleste0
- Direction
- talleste0
- Comparator
- TGX 1485-1De0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Variety TGX 2004-10F was the tallest while vari- ety TGX 1485-1D was the shortest”
t0“Soybean”
e1“with rhizobium inoculation variety TGX 2010-12F was the tallest throughout the sampling period”
Claim · model-written summary
With inoculation, TGX 2010-12F was tallest.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 2010-12Fe0
- Treatment
- rhizobium inoculatione0
- Outcome
- talleste0
- Direction
- talleste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with rhizobium inoculation variety TGX 2010-12F was the tallest throughout the sampling period”
t0“Soybean”
Claim · model-written summary
With inoculation, TGX 1485-1D remained shortest.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 1485-1De0
- Treatment
- rhizobium inoculatione1
- Outcome
- shorteste0
- Direction
- shorteste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety TGX 1485-1D was still the shortest”
t0“Soybean”
e1“with rhizobium inoculation variety TGX 2010-12F was the tallest throughout the sampling period”
Claim · model-written summary
Rhizobium inoculation had no significant effect on shoot and root weights.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Rhizobium inoculatione0
- Outcome
- shoot and root weightse0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobium inoculation had no significant effect on the shoot and root weights”
t0“Soybean”
Claim · model-written summary
TGX 2004-10F had the highest shoot weight, 28.8 g/pot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety TGX 2004-10F had the highest shoot (28.8 g/pot), and root (6.2 g/pot) weights”
t0“Soybean”
Claim · model-written summary
TGX 2004-10F had the highest root weight, 6.2 g/pot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety TGX 2004-10F had the highest shoot (28.8 g/pot), and root (6.2 g/pot) weights”
t0“Soybean”
Claim · model-written summary
TGX 1485-1D produced the lowest shoot weight, 9.5 g/pot.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 1485-1De0
- Outcome
- shoot weighte0
- Direction
- loweste0
- Value
- 9.5 g/pote0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety TGX 1485-1D produced the lowest shoot weight (9.5 g/pot)”
t0“Soybean”
Claim · model-written summary
TGX 2008-2F had the lowest root weight, 2.5 g/pot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varieties TGX 2008-2F and TGX 2008-4F had the lowest root weight (2.5 g/pot)”
t0“Soybean”
Claim · model-written summary
TGX 2008-4F had the lowest root weight, 2.5 g/pot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varieties TGX 2008-2F and TGX 2008-4F had the lowest root weight (2.5 g/pot)”
t0“Soybean”
Claim · model-written summary
TGX 2010-12F shoot weight increased 33.7% with rhizobium.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 2010-12Fe0
- Treatment
- rhizobiume0
- Outcome
- shoote0
- Direction
- increasee0
- Value
- 33.7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Variety TGX 2010-12F was the most responsive to rhizobium in terms of the shoot (33.7% increase) and root (44.1% increase) weights”
t0“Soybean”
Claim · model-written summary
TGX 2010-12F root weight increased 44.1% with rhizobium.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 2010-12Fe0
- Treatment
- rhizobiume0
- Outcome
- roote0
- Direction
- increasee0
- Value
- 44.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Variety TGX 2010-12F was the most responsive to rhizobium in terms of the shoot (33.7% increase) and root (44.1% increase) weights”
t0“Soybean”
Claim · model-written summary
TGX 2008-4F shoot weight fell 57.2% with rhizobium.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 2008-4Fe0
- Treatment
- rhizobium inoculatione1
- Outcome
- shoote0
- Direction
- decreasee0
- Value
- -57.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety TGX 2008-4F had the most negative response (-57.2% decrease) and (-100% decrease) in shoot and root weights”
t0“Soybean”
e1“with rhizobium inoculation variety TGX 2010-12F was the tallest throughout the sampling period”
Claim · model-written summary
TGX 2008-4F root weight fell 100% with rhizobium.
- Taxon
- SoybeanGlycine maxt0
- Material
- TGX 2008-4Fe0
- Treatment
- rhizobium inoculatione1
- Outcome
- root weightse0
- Direction
- decreasee0
- Value
- -100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variety TGX 2008-4F had the most negative response (-57.2% decrease) and (-100% decrease) in shoot and root weights”
t0“Soybean”
e1“with rhizobium inoculation variety TGX 2010-12F was the tallest throughout the sampling period”
Claim · model-written summary
Rhizobium increased seed weight in almost all varieties by 9.4% - 35.4%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Rhizobium inoculatione0
- Outcome
- seed weighte0
- Direction
- increasede0
- Value
- 9.4% - 35.4%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobium inoculation increased seed weight of almost all the varieties (9.4% - 35.4%)”
t0“Soybean”
Claim · model-written summary
Rhizobium inoculation significantly enhanced nitrogen fixed.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Rhizobium inoculatione0
- Outcome
- nitro- gen fixede0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobium inoculation significantly enhanced nitro- gen fixed”
t0“Soybean”
Claim · model-written summary
Varieties differed in nitrogen fixed response, from -28.3% to 48.7%.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- rhizobium inoculatione0
- Outcome
- N fixede0
- Direction
- differencese0
- Value
- -28.3% to 48.7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“varieties exhibited differences in N fixed in response to rhizobium inoculation (range -28.3% to 48.7%)”
t0“Soybean”
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