Abstract
Four molybdenum compounds were mixed with lime and applied as coatings to inoculated seed of lucerne (Hunter River) and subterranean clover (Mount Barker). The seed was sown immediately in molybdenum-deficient soil in the field or stored for periods up to 84 days before sowing. As storage time lengthened, the survival of both lucerne and clover rhizobia was adversely affected by sodium molybdate but not by molybdic acid, ammonium molybdate or molybdenum disulphide. This effect was reflected in poorer nodulation in the sodium molybdate treatments. Nitrogen fixation, using foliage nitrogen content as an index, was always higher in the molybdenum treatments than in the no-molybdenum controls. Both species appeared able to extract molybdenum from molybdenum disulphide. Otherwise, there were no treatment differences in plant growth, but there was a significant relationship between the proportion of seedlings nodulated by the inoculant strains and the amount of nitrogen fixation. It is concluded that seed-applied molybdenum would benefit pasture establishment in some circumstances and would not interfere with inoculant survival or seedling nodulation provided that sodium molybdate was not used for the purpose.
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Claims 11
Claim · model-written summary
Sodium molybdate adversely affected lucerne rhizobial survival as storage lengthened.
- Taxon
- lucerne
Medicago sativae0 - Treatment
- sodium molybdatee0
- Interactor
- rhizobiae0symbiont
- Outcome
- survival of both lucerne and clover rhizobiae0
- Direction
- adversely affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As storage time lengthened, the survival of both lucerne and clover rhizobia was adversely affected by sodium molybdate”
Claim · model-written summary
Sodium molybdate adversely affected clover rhizobial survival as storage lengthened.
- Taxon
- subterranean clover
Trifolium subterraneumt0 - Treatment
- sodium molybdatee0
- Interactor
- rhizobiae0symbiont
- Outcome
- survival of both lucerne and clover rhizobiae0
- Direction
- adversely affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As storage time lengthened, the survival of both lucerne and clover rhizobia was adversely affected by sodium molybdate”
t0“subterranean clover”
Claim · model-written summary
Molybdic acid did not adversely affect rhizobial survival.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Treatment
- molybdic acide0
Not reportedComparatorOutcomeDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not by molybdic acid, ammonium molybdate or molybdenum disulphide”
t0“lucerne and subterranean clover”
Claim · model-written summary
Ammonium molybdate did not adversely affect rhizobial survival.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Treatment
- ammonium molybdatee0
Not reportedComparatorOutcomeDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not by molybdic acid, ammonium molybdate or molybdenum disulphide”
t0“lucerne and subterranean clover”
Claim · model-written summary
Molybdenum disulphide did not adversely affect rhizobial survival.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Treatment
- molybdenum disulphidee0
Not reportedComparatorOutcomeDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not by molybdic acid, ammonium molybdate or molybdenum disulphide”
t0“lucerne and subterranean clover”
Claim · model-written summary
Sodium molybdate treatments produced poorer seedling nodulation.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Treatment
- sodium molybdate treatmentse0
- Outcome
- nodulatione0
- Direction
- poorere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This effect was reflected in poorer nodulation in the sodium molybdate treatments”
t0“lucerne and subterranean clover”
Claim · model-written summary
Molybdenum treatments produced higher nitrogen fixation than no-molybdenum controls.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Treatment
- molybdenum treatmentse0
- Outcome
- Nitrogen fixatione0
- Direction
- highere0
- Qualifier
- using foliage nitrogen content as an indexe0
- Comparator
- no-molybdenum controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fixation, using foliage nitrogen content as an index, was always higher in the molybdenum treatments than in the no-molybdenum controls”
t0“lucerne and subterranean clover”
Claim · model-written summary
Both species appeared able to extract molybdenum from molybdenum disulphide.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Outcome
- extract molybdenum from molybdenum disulphidee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both species appeared able to extract molybdenum from molybdenum disulphide”
t0“lucerne and subterranean clover”
Claim · model-written summary
Otherwise, plant growth did not differ among treatments.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Treatment
- treatmente0
- Outcome
- plant growthe0
- Direction
- no treatment differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Otherwise, there were no treatment differences in plant growth”
t0“lucerne and subterranean clover”
Claim · model-written summary
The proportion of seedlings nodulated by inoculant strains was significantly related to nitrogen fixation.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Interactor
- inoculant strainse0symbiont
- Outcome
- amount of nitrogen fixatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significant relationship between the proportion of seedlings nodulated by the inoculant strains and the amount of nitrogen fixation”
t0“lucerne and subterranean clover”
Claim · model-written summary
Seed-applied molybdenum may benefit pasture establishment if sodium molybdate is avoided.
- Taxon
- lucerne and subterranean cloverMedicago sativaTrifolium subterraneumt0
- Treatment
- seed-applied molybdenume0
- Outcome
- pasture establishmente0
- Qualifier
- provided that sodium molybdate was not used for the purposee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed-applied molybdenum would benefit pasture establishment in some circumstances and would not interfere with inoculant survival or seedling nodulation provided that sodium molybdate was not used for the purpose”
t0“lucerne and subterranean clover”
The same questions in other papers
molybdenum atom · symbiosis · Medicago sativa (alfalfa)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
molybdenum atom · symbiosis · Trifolium subterraneumResults agree
1 paper in the same direction as this paper
- positive
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.