Abstract
Abstract Two series of trials examined methods of improving the poor establishment of ‘Grasslands Maku’ lotus in acid tussock grassland. At four sites (pH 4.4–5.1), increasing rates of fertiliser nitrogen (0–30 kg N/ha) at sowing, and increasing inoculation rate were investigated. At a further two sites (pH 4.6, 5.1), the effects of 5× and 10× the recommended inoculation rate, broadcast lime (at 500 kg/ha), and pelleting seed with rock phosphate/dolomite were evaluated. Nitrogen reduced plant weight and nodule number at three sites in the first year, and reduced second year plant production where vegetation cover was dense. The reduction in establishment was probably caused by nitrogen inhibiting nodulation, together with competition from resident vegetation. Addition of nitrogen at sowing to Maku lotus in the field should be avoided. Increasing the recommended inoculation rate increased establishment, by improving nodulation, winter survival, individual plant growth, and overall production. Broadcast lime improved nodulation at pH 4.6, but not at pH 5.1. However, total production was increased at both sites. The nodulation response to pelleting was similar to that for broadcast lime at low pH (4.6), but the lime effect was less than that obtained with increased inoculation and was lost by the second year.
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Claims 11
Claim · model-written summary
Nitrogen reduced plant weight and nodule number at three sites in the first year.
- Taxon
- Lotus pedunculatus
Lotus pedunculatust0 - Treatment
- Nitrogene0
- Outcome
- plant weight and nodule numbere0
- Direction
- reducede0
- Qualifier
- at three sites in the first yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen reduced plant weight and nodule number at three sites in the first year”
t0“Lotus pedunculatus”
Claim · model-written summary
Nitrogen reduced second year production where vegetation cover was dense.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- Nitrogene1
- Outcome
- second year plant productione0
- Direction
- reducede0
- Qualifier
- where vegetation cover was densee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced second year plant production where vegetation cover was dense.”
t0“Lotus pedunculatus”
e1“Nitrogen reduced plant weight and nodule number at three sites in the first year”
Claim · model-written summary
Nitrogen probably reduced establishment by inhibiting nodulation and increasing competition.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- nitrogene0
- Outcome
- reduction in establishmente0
- Qualifier
- inhibiting nodulation, together with competition from resident vegetatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The reduction in establishment was probably caused by nitrogen inhibiting nodulation, together with competition from resident vegetation.”
t0“Lotus pedunculatus”
Claim · model-written summary
The authors recommend avoiding nitrogen at sowing for field Maku lotus.
Verbatim
e0“Addition of nitrogen at sowing to Maku lotus in the field should be avoided.”
Claim · model-written summary
Increasing inoculation rate increased establishment.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- Increasing the recommended inoculation ratee0
- Outcome
- establishmente0
- Direction
- increasede0
- Comparator
- recommended inoculation ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the recommended inoculation rate increased establishment”
t0“Lotus pedunculatus”
Claim · model-written summary
Higher inoculation improved nodulation, winter survival, plant growth and production.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- Increasing the recommended inoculation ratee1
- Outcome
- nodulation, winter survival, individual plant growth, and overall productione0
- Direction
- improvinge0
- Comparator
- recommended inoculation ratee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“by improving nodulation, winter survival, individual plant growth, and overall production.”
t0“Lotus pedunculatus”
e1“Increasing the recommended inoculation rate increased establishment”
Claim · model-written summary
Broadcast lime improved nodulation at pH 4.6.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- Broadcast limee0
- Outcome
- nodulatione0
- Direction
- improvede0
- Qualifier
- at pH 4.6e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broadcast lime improved nodulation at pH 4.6, but not at pH 5.1.”
t0“Lotus pedunculatus”
Claim · model-written summary
Broadcast lime did not improve nodulation at pH 5.1.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- Broadcast limee0
- Outcome
- nodulatione0
- Direction
- note0
- Qualifier
- at pH 5.1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broadcast lime improved nodulation at pH 4.6, but not at pH 5.1.”
t0“Lotus pedunculatus”
Claim · model-written summary
Broadcast lime increased total production at both sites.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- Broadcast limee1
- Outcome
- total productione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total production was increased at both sites.”
t0“Lotus pedunculatus”
e1“Broadcast lime improved nodulation at pH 4.6, but not at pH 5.1.”
Claim · model-written summary
Pelleting had a nodulation response similar to broadcast lime at pH 4.6.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Treatment
- pelletinge0
- Outcome
- nodulation responsee0
- Direction
- similare0
- Qualifier
- at low pH (4.6)e0
- Comparator
- broadcast limee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nodulation response to pelleting was similar to that for broadcast lime at low pH (4.6)”
t0“Lotus pedunculatus”
Claim · model-written summary
The lime effect was weaker than increased inoculation and disappeared by year two.
- Taxon
- Lotus pedunculatusLotus pedunculatust0
- Outcome
- lime effecte0
- Direction
- less thane0
- Qualifier
- lost by the second yeare0
- Comparator
- increased inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lime effect was less than that obtained with increased inoculation and was lost by the second year.”
t0“Lotus pedunculatus”
The same questions in other papers
nitrogen · yield · Lotus pedunculatusPositive and negative results
1 in the opposite direction
- positive
lime · symbiosis · Lotus pedunculatusResults agree
1 paper in the same direction as this paper
- positive
seed treatment · symbiosis · Lotus pedunculatusResults agree
1 paper in the same direction as this paper
- positive
transplanting · symbiosis · Lotus pedunculatusResults agree
1 paper in the same direction as this paper
- positive
nitrogen · symbiosis · Lotus pedunculatusResults agree
1 paper in the same direction as this paper
- negative
inoculation · symbiosis · Lotus pedunculatusResults agree
2 papers in the same direction as this paper
- positive
- 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.