Abstract
Strains and numbers of Rhizobium japonicum in the soil can influence soybean (Glycine max (L.) Merrill) yields but R. japonicum serogroups and numbers in Ontario soils have not been studied. In 1976 and 1977, the influences of inoculation and fertilizer nitrogen (N) levels on populations, measured by most probable number (MPN) techniques, and serogroups of R. japonicum were studied at three Ontario sites. The locations, near Ridgetown, Elora, and Woodstock, represented areas where soybeans had been grown many times previously, only a few times or not at all, respectively. Treatments were (a) un inoculated + O N; (b–e) inoculated +0, 50, 100 or 200 kg N/ha.At Ridgetown, MPN's, expressed on log 10 bases, ranged from 5.17/g soil in 1977 to 7.02 in 1976. At Elora, comparable values were from 3.66 to 6.43. Inoculation did not increase MPN's at either site. At Woodstock, inoculation increased MPN's from 0 to about 2.47 in both years. Nitrogen application did not change the MPN values at any site in either year.Serogroup 110 predominated in the nodules at Ridgetown in both years. At Elora, serogroup 123 was found most frequently in nodules. Serogroups 311b 138 in 1976 and 122 and 125 in 1977 were found most frequently after inoculation at Woodstock. Additions of fertilizer N had only slight effects on the distribution of serogroups in the nodules.
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Claims 8
Claim · model-written summary
Inoculation did not increase soil Rhizobium populations at Ridgetown.
- Taxon
- soybean
Glycine maxe2 - Treatment
- Inoculatione0
- Interactor
- Rhizobium japonicume3symbiont
- Outcome
- Rhizobium japonicume3
- Direction
- did not increasee0
- Setting
- Ridgetowne1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation did not increase MPN's at either site.”
e1“At Ridgetown, MPN's, expressed on log 10 bases, ranged from 5.17/g soil in 1977 to 7.02 in 1976.”
e2“soybean (Glycine max (L.) Merrill)”
e3“Rhizobium japonicum”
Claim · model-written summary
Inoculation did not increase soil Rhizobium populations at Elora.
- Taxon
- soybeanGlycine maxe2
- Treatment
- Inoculatione0
- Interactor
- Rhizobium japonicume3symbiont
- Outcome
- MPN'se0
- Direction
- did not increasee0
- Setting
- Elorae1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation did not increase MPN's at either site.”
e1“At Elora, comparable values were from 3.66 to 6.43.”
e2“soybean (Glycine max (L.) Merrill)”
e3“Rhizobium japonicum”
Claim · model-written summary
At Woodstock, inoculation increased soil Rhizobium populations from zero to about 2.47 in both years.
- Taxon
- soybeanGlycine maxe1
- Treatment
- inoculatione0
- Interactor
- Rhizobium japonicume2symbiont
- Outcome
- MPN'se0
- Direction
- increasede0
- Value
- about 2.47e0
- Setting
- Woodstocke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Woodstock, inoculation increased MPN's from 0 to about 2.47 in both years.”
e1“soybean (Glycine max (L.) Merrill)”
e2“Rhizobium japonicum”
Claim · model-written summary
Nitrogen application did not change soil Rhizobium population estimates at any site in either year.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Nitrogen applicatione0
- Interactor
- Rhizobium japonicume2symbiont
- Outcome
- MPN valuese0
- Direction
- did not changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen application did not change the MPN values at any site in either year.”
e1“soybean (Glycine max (L.) Merrill)”
e2“Rhizobium japonicum”
Claim · model-written summary
Rhizobium serogroup 110 predominated in soybean nodules at Ridgetown in both years.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- nodulese0
- Interactor
- Rhizobium japonicume2symbiont
- Outcome
- Serogroup 110 predominatede0
- Setting
- Ridgetowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Serogroup 110 predominated in the nodules at Ridgetown in both years.”
e1“soybean (Glycine max (L.) Merrill)”
e2“Rhizobium japonicum”
Claim · model-written summary
Rhizobium serogroup 123 was most frequent in nodules at Elora.
- Taxon
- soybeanGlycine maxe1
- Organ / stage
- nodulese0
- Interactor
- Rhizobium japonicume2symbiont
- Outcome
- serogroup 123 was found most frequentlye0
- Setting
- Elorae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At Elora, serogroup 123 was found most frequently in nodules.”
e1“soybean (Glycine max (L.) Merrill)”
e2“Rhizobium japonicum”
Claim · model-written summary
After inoculation at Woodstock, serogroups 311b and 138 were most frequent in 1976 and 122 and 125 in 1977.
- Taxon
- soybeanGlycine maxe1
- Treatment
- inoculatione0
- Interactor
- Rhizobium japonicume2symbiont
- Outcome
- Serogroups 311b 138 in 1976 and 122 and 125 in 1977 were found most frequentlye0
- Setting
- Woodstocke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Serogroups 311b 138 in 1976 and 122 and 125 in 1977 were found most frequently after inoculation at Woodstock.”
e1“soybean (Glycine max (L.) Merrill)”
e2“Rhizobium japonicum”
Claim · model-written summary
Fertilizer nitrogen additions had only slight effects on Rhizobium serogroup distribution in soybean nodules.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Additions of fertilizer Ne0
- Interactor
- Rhizobium japonicume2symbiont
- Outcome
- distribution of serogroups in the nodulese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Additions of fertilizer N had only slight effects on the distribution of serogroups in the nodules.”
e1“soybean (Glycine max (L.) Merrill)”
e2“Rhizobium japonicum”
The same questions in other papers
inoculation · organism · Glycine max (soybean)Positive and negative results
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See all 33 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.