Abstract
ABSTRACT Seed‐applied rhizobia inoculants can be used to promote biological nitrogen fixation in soybean [ Glycine max (L.) Merr.] production, yet their efficacy remains highly variable. The goal of this study was to improve the predictability of a positive soybean seed yield and quality response to inoculation by (i) characterizing inoculant product response in multiple environments, and (ii) quantifying the response of soybean to indigenous soil rhizobia populations. Two inoculants and a control were tested on three soybean varieties at nine locations in Wisconsin during 2009 and 2010. Soil samples were collected from each plot for the quantification of soil rhizobia. Seed yield, protein, and oil did not respond to inoculation across all 18 environments ( P = 0.15, 0.38, and 0.30, respectively). Three environments responded positively to inoculation ( P < 0.05), while the remainder showed no response. Yield of the control treatment was positively correlated with the soil rhizobia population level across all environments ( P = 0.005), while the inoculated treatments showed no response. These data indicate a yield advantage for inoculation at lower rhizobia populations; however, given the large range of response with only three of 18 environments showing a positive response, a rhizobia population threshold to aid in the decision to treat soybean seeds with a rhizobia inoculant cannot be determined.
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Claims 6
Claim · model-written summary
Soybean seed yield, protein and oil did not respond to inoculation across all 18 environments.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- inoculatione0
- Outcome
- Seed yield, protein, and oile0
- Direction
- did not responde0
- Qualifier
- across all 18 environmentse0
- Comparator
- controle1
- Setting
- Wisconsine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Response to Soil Rhizobia”
e0“Seed yield, protein, and oil did not respond to inoculation across all 18 environments”
e1“Two inoculants and a control were tested on three soybean varieties at nine locations in Wisconsin during 2009 and 2010”
Claim · model-written summary
Three environments responded positively to rhizobia inoculation.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- inoculatione2
- Outcome
- responded positively to inoculatione2
- Direction
- responded positivelye2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Response to Soil Rhizobia”
e2“Three environments responded positively to inoculation”
Claim · model-written summary
Yield of the control treatment was positively correlated with the soil rhizobia population level across all environments.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- soil rhizobiae3symbiont
- Outcome
- Yield of the control treatmente3
- Direction
- positively correlatede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Response to Soil Rhizobia”
e3“Yield of the control treatment was positively correlated with the soil rhizobia population level across all environments”
Claim · model-written summary
Yield response of inoculated treatments showed no relation to the soil rhizobia population level.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- inoculatede4
- Outcome
- responsee4
- Direction
- no responsee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Response to Soil Rhizobia”
e4“while the inoculated treatments showed no response”
Claim · model-written summary
A yield advantage for inoculation is indicated at lower rhizobia populations.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- inoculatione5
- Interactor
- rhizobiae5symbiont
- Outcome
- yield advantagee5
- Direction
- higherinferrede5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Response to Soil Rhizobia”
e5“These data indicate a yield advantage for inoculation at lower rhizobia populations”
Claim · model-written summary
A rhizobia population threshold for deciding on soybean seed inoculation could not be determined.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- a rhizobia population thresholde6
- Qualifier
- cannot be determinede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean Response to Soil Rhizobia”
e6“a rhizobia population threshold to aid in the decision to treat soybean seeds with a rhizobia inoculant cannot be determined”
The same questions in other papers
inoculation · quality: protein · Glycine max (soybean)Results differ
5 papers in the same direction as this paper · 47 in the opposite direction
- no effect
- positive
- positive
49 papers more in this group
See all 53 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.