Abstract
Ten temperate pasture legumes inoculated with appropriate rhizobia were grown for 31 days in flowing solution culture. Solution ionic strength was approximately 2700 8M and contained inorganic nitrogen (150 , 8M NO3-) only at the commencement of the experiment. Solution pH was maintained at 4.5, 5.0, 5.5 and 6.0. Also, five aluminium (Al) treatments were imposed, with nominal Al concentrations of 0, 3, 6, 12 and 24 8M (2.5, 7.1, 8.3, 11.2 and 24.7 8M Al measured) at pH 4.5. Solution pH <6 . 0 markedly reduced total dry mass (TDM) in all cultivars of white clover (Trifolium repens) cvv. 'Grasslands Pitau, Huia, G18 and Tahora' and red clover (Trifolium pratense) cvv. 'Grassland Turoa and Pawera', and to a lesser extent in the two subterranean clover (Trifolium subterraneum) cvv. 'Tallarook and Woogenellup'. In contrast, solution pH had no effect on the growth of Lotus corniculatus cv. Maitland, while Lotus pedunculatus cv. Maku grew best at pH 4.5. Lotus pedunculatus cv. Maku grew best in solution where the sum of the activities of the monomeric Al species {Alm} was maintained at 5.9 8M. The growth of all other species was decreased with Al in solution, a 50% reduction in TDM being associated with c. 6 8M {Alm] for white clover and subterranean clover, and c. 3 8M in red clover and Lotus corniculatus cv. Maitland.
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Claims 9
Claim · model-written summary
Solution pH below 6 reduced total dry mass in white clover cultivars.
- Taxon
- Trifolium repens
Trifolium repense0 - Material
- Grasslands Pitau, Huia, G18 and Tahorae0
- Treatment
- Solution pH <6 . 0e0
- Outcome
- total dry mass (TDM)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Solution pH <6 . 0 markedly reduced total dry mass (TDM) in all cultivars of white clover (Trifolium repens) cvv. 'Grasslands Pitau, Huia, G18 and Tahora'”
Claim · model-written summary
Solution pH below 6 reduced total dry mass in red clover cultivars.
- Taxon
- Trifolium pratense
Trifolium pratensee0 - Material
- Grassland Turoa and Pawerae0
- Treatment
- Solution pH <6 . 0e0
- Outcome
- total dry mass (TDM)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Solution pH <6 . 0 markedly reduced total dry mass (TDM) in all cultivars of white clover (Trifolium repens) cvv. 'Grasslands Pitau, Huia, G18 and Tahora' and red clover (Trifolium pratense) cvv. 'Grassland Turoa and Pawera'”
Claim · model-written summary
Solution pH below 6 reduced total dry mass to a lesser extent in subterranean clover cultivars.
- Taxon
- Trifolium subterraneum
Trifolium subterraneume0 - Material
- Tallarook and Woogenellupe0
- Direction
- lesser extente0
Not reportedTreatmentComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“and to a lesser extent in the two subterranean clover (Trifolium subterraneum) cvv. 'Tallarook and Woogenellup'”
Claim · model-written summary
Solution pH had no effect on growth of Lotus corniculatus cultivar Maitland.
- Taxon
- Lotus corniculatus
_Lotus_corniculatus_-_Plant_habit.jpg?width=60)
Lotus corniculatuse0 - Material
- Maitlande0
- Treatment
- solution pHe0
- Outcome
- growthe0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Lotus_corniculatus_-_Plant_habit.jpg?width=500)
Verbatim
e0“solution pH had no effect on the growth of Lotus corniculatus cv. Maitland”
Claim · model-written summary
Lotus pedunculatus cultivar Maku grew best at pH 4.5.
- Taxon
- Lotus pedunculatus
Lotus pedunculatuse0 - Material
- Makue0
- Treatment
- pH 4.5e0
- Outcome
- grew beste0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lotus pedunculatus cv. Maku grew best at pH 4.5.”
Claim · model-written summary
Lotus pedunculatus cultivar Maku grew best at 5.9 8M monomeric aluminium species.
- Taxon
- Lotus pedunculatusLotus pedunculatuse0
- Material
- Makue0
- Treatment
- 5.9 8Me0
- Outcome
- grew beste0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lotus pedunculatus cv. Maku grew best in solution where the sum of the activities of the monomeric Al species {Alm} was maintained at 5.9 8M.”
Claim · model-written summary
Aluminium in solution decreased growth of the other species.
Not reportedComparator
Verbatim
e0“The growth of all other species was decreased with Al in solution”
Claim · model-written summary
White and subterranean clover reached 50% TDM reduction around 6 8M monomeric aluminium activity.
- Taxon
- white clover and subterranean cloverTrifolium repensTrifolium subterraneume0
- Treatment
- c. 6 8M {Alm]e0
- Outcome
- TDMe0
- Direction
- reductione0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 50% reduction in TDM being associated with c. 6 8M {Alm] for white clover and subterranean clover”
Claim · model-written summary
Red clover and Lotus corniculatus cultivar Maitland reached 50% TDM reduction around 3 8M monomeric aluminium activity.
- Taxon
- red clover and Lotus corniculatusLotus corniculatusTrifolium pratensee0
- Material
- Maitlande0
- Treatment
- c. 3 8Me0
- Outcome
- TDMe0
- Direction
- reductione0
- Value
- 50%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a 50% reduction in TDM being associated with c. 6 8M {Alm] for white clover and subterranean clover, and c. 3 8M in red clover and Lotus corniculatus cv. Maitland”
The same questions in other papers
ph · growth · Trifolium repens (white clover)Results agree
4 papers in the same direction as this paper
- negative
- negative
- no effect
1 paper more in this group
See all 5 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.