Abstract
Abstract Responses to lime and molybdenum in white clover obtained in a glasshouse experiment have been related to factors associated with acidity in a weathering and leaching sequence of zonal soils derived mainly from greywacke parent materials. On a percentage increase basis the largest dry‐matter responses to lime were obtained on the strongly leached and podzolised soils. Yields of limed clover in the soil sequence decreased with increasing weathering and leaching On the weakly leached brown‐grey earth Conroy sandy loam, a response to lime was attributed to an increase in molybdenum availability and probably to more effective clover nodulation. Increasing weathering and leaching in moderately and strongly leached yellow‐brown earths was accompanied by a decrease in molybdenum availability and was an important factor limiting clover growth. On Cass fine sandy loam, Korokoro silt loam, and Marua clay loam the response to Jime was attributed mainly to an increase in molybdenum uptake. Renata silt loam, a moderately weathered, weakly podzolised yellow‐brown earth, was an exception and was well supplied with available molybdenum. Poor growth on this soil was probably caused by insufficient calcium for nodulation. On the weakly and moderately podzolised northern yellow‐brown earths Rangiora silty clay loam and Hukerenui silt loam, a severe nitrogen deficiency, resulting from nodulation failure, was a major cause of poor growth. High manganese levels in these clovers were considered to be a consequence of restricted growth rather than the cause. Over all soils, liming increased uptake of nitrogen, increased molybdenum availability, and, with the exception of Renata silt loam, decreased the manganese content of white clover.
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Claims 12
Claim · model-written summary
Liming gave the largest percentage dry matter increases on strongly leached and podzolised soils.
- Taxon
- white clover
Trifolium repenst0 - Treatment
- limee0
- Outcome
- dry‐matter responsese0
- Direction
- largeste0
- Setting
- strongly leached and podzolised soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On a percentage increase basis the largest dry‐matter responses to lime were obtained on the strongly leached and podzolised soils.”
t0“white clover”
Claim · model-written summary
Limed clover yields declined with increasing soil weathering and leaching.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- Yields of limed clovere0
- Direction
- decreasede0
- Qualifier
- increasing weathering and leachinge0
- Setting
- soil sequencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields of limed clover in the soil sequence decreased with increasing weathering and leaching”
t0“white clover”
Claim · model-written summary
The Conroy sandy loam lime response was attributed to increased molybdenum availability and probably improved nodulation.
- Taxon
- white cloverTrifolium repenst0
- Treatment
- limee0
- Outcome
- response to limee0
- Qualifier
- increase in molybdenum availability and probably to more effective clover nodulatione0
- Setting
- Conroy sandy loame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the weakly leached brown‐grey earth Conroy sandy loam, a response to lime was attributed to an increase in molybdenum availability and probably to more effective clover nodulation.”
t0“white clover”
Claim · model-written summary
Greater weathering and leaching accompanied lower molybdenum availability, limiting clover growth.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- molybdenum availabilitye0
- Direction
- decreasee0
- Qualifier
- Increasing weathering and leachinge0
- Setting
- moderately and strongly leached yellow‐brown earthse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing weathering and leaching in moderately and strongly leached yellow‐brown earths was accompanied by a decrease in molybdenum availability and was an important factor limiting clover growth.”
t0“white clover”
Claim · model-written summary
On three named soils, the lime response was mainly attributed to greater molybdenum uptake.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- response to Jimee0
- Qualifier
- increase in molybdenum uptakee0
- Setting
- Cass fine sandy loam, Korokoro silt loam, and Marua clay loame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On Cass fine sandy loam, Korokoro silt loam, and Marua clay loam the response to Jime was attributed mainly to an increase in molybdenum uptake.”
t0“white clover”
Claim · model-written summary
Renata silt loam was well supplied with available molybdenum.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- available molybdenume0
- Direction
- well suppliede0
- Setting
- Renata silt loame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Renata silt loam, a moderately weathered, weakly podzolised yellow‐brown earth, was an exception and was well supplied with available molybdenum.”
t0“white clover”
Claim · model-written summary
Poor clover growth on Renata silt loam was probably caused by insufficient calcium for nodulation.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- Poor growthe0
- Qualifier
- insufficient calcium for nodulatione0
- Setting
- Renata silt loame1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Poor growth on this soil was probably caused by insufficient calcium for nodulation.”
e1“Renata silt loam, a moderately weathered, weakly podzolised yellow‐brown earth”
t0“white clover”
Claim · model-written summary
Nodulation failure and severe nitrogen deficiency were major causes of poor clover growth on two northern soils.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- poor growthe0
- Qualifier
- severe nitrogen deficiency, resulting from nodulation failuree0
- Setting
- Rangiora silty clay loam and Hukerenui silt loame0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On the weakly and moderately podzolised northern yellow‐brown earths Rangiora silty clay loam and Hukerenui silt loam, a severe nitrogen deficiency, resulting from nodulation failure, was a major cause of poor growth.”
t0“white clover”
Claim · model-written summary
High manganese levels were interpreted as a consequence of restricted clover growth.
- Taxon
- white cloverTrifolium repenst0
- Outcome
- High manganese levelse0
- Qualifier
- consequence of restricted growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High manganese levels in these clovers were considered to be a consequence of restricted growth rather than the cause.”
t0“white clover”
Claim · model-written summary
Across all soils, liming increased nitrogen uptake.
- Taxon
- white cloverTrifolium repense0
- Treatment
- liminge0
- Outcome
- uptake of nitrogene0
- Direction
- increasede0
- Setting
- all soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Over all soils, liming increased uptake of nitrogen, increased molybdenum availability, and, with the exception of Renata silt loam, decreased the manganese content of white clover.”
Claim · model-written summary
Across all soils, liming increased molybdenum availability.
- Taxon
- white cloverTrifolium repense0
- Treatment
- liminge0
- Outcome
- molybdenum availabilitye0
- Direction
- increasede0
- Setting
- all soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Over all soils, liming increased uptake of nitrogen, increased molybdenum availability, and, with the exception of Renata silt loam, decreased the manganese content of white clover.”
Claim · model-written summary
Except on Renata silt loam, liming decreased white clover manganese content.
- Taxon
- white cloverTrifolium repense0
- Treatment
- liminge0
- Outcome
- manganese content of white clovere0
- Direction
- decreasede0
- Qualifier
- with the exception of Renata silt loame0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Over all soils, liming increased uptake of nitrogen, increased molybdenum availability, and, with the exception of Renata silt loam, decreased the manganese content of white clover.”
The same questions in other papers
lime · growth · Trifolium repens (white clover)Results differ
9 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- positive
- no effect
10 papers more in this group
See all 14 papers →lime · nutrient: content · Trifolium repens (white clover)Positive and negative results
9 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
7 papers more in this group
See all 11 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.