Abstract
Three glasshouse experiments, using light textured soils, were conducted to investigate the effects of nitrogen (N) source and calcitic lime on i) soil pHw(soil pH in water), ii) tuber yield, iii) leaf chemical composition, and iv) cadmium (Cd) accumulation in tubers of the potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic. The N sources applied were calcium nitrate, ammonium nitrate, urea, and ammonium sulfate. Rates of calcitic lime ranged from 0 to 20 t ha−1. Liming increased soil pHwvalues up to 2.8 units, and depending on sampling time, differences in soil pHwof up to 1.8 units occurred between the N sources. In 2 of the 3 experiments there was a significant interaction between lime and N source in their effects on tuber yield. When calcium nitrate was the N source, liming decreased tuber yields. In contrast, with ammonium sulfate yield increased. The effects of liming and N source on the chemical composition of the 5th leaf were not consistent between experiments. Liming significantly decreased potassium (K), sulfur (S), boron (B), and manganese (Mn) concentrations and increased calcium (Ca) and magnesium (Mg) concentrations. The application of ammonium sulfate consistently decreased Ca and Mg concentrations in the 5th leaf compared with calcium nitrate. Liming significantly decreased tuber Cd concentrations in all experiments. The use of calcium nitrate as the N source resulted in significantly higher Cd concentrations in tubers compared with ammonium sulfate when no calcitic lime was applied. It is possible that Ca added in this fertilizer enhanced Cd uptake through displacement of Cd from soil surfaces.
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Claims 13
Claim · model-written summary
Liming increased soil pHw by up to 2.8 units in potato glasshouse experiments.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- Liminge1
- Outcome
- soil pHwe1
- Direction
- increasede1
- Value
- 2.8 unitse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e1“Liming increased soil pHwvalues up to 2.8 units”
Claim · model-written summary
Soil pHw differed by up to 1.8 units between the nitrogen sources, depending on sampling time.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- N sourcese2
- Outcome
- soil pHwofe2
- Value
- 1.8 unitse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e2“depending on sampling time, differences in soil pHwof up to 1.8 units occurred between the N sources”
Claim · model-written summary
Interaction between lime and nitrogen source was significant for tuber yield in 2 of 3 experiments.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- lime and N sourcee3
- Outcome
- tuber yielde3
- Setting
- glasshouse experimentse4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e3“In 2 of the 3 experiments there was a significant interaction between lime and N source in their effects on tuber yield”
e4“Three glasshouse experiments, using light textured soils, were conducted”
Claim · model-written summary
Liming decreased tuber yields when calcium nitrate was the nitrogen source.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- liminge5
- Outcome
- tuber yieldse5
- Direction
- decreasede5
- Qualifier
- When calcium nitrate was the N sourcee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e5“When calcium nitrate was the N source, liming decreased tuber yields”
Claim · model-written summary
Ammonium sulfate increased potato yield.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- ammonium sulfatee6
- Outcome
- yielde6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e6“In contrast, with ammonium sulfate yield increased”
Claim · model-written summary
The chemical composition of the 5th leaf was not consistent between experiments for liming and nitrogen source.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- 5th leafe1
- Treatment
- liming and N sourcee1
- Outcome
- chemical composition of the 5th leafe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e1“The effects of liming and N source on the chemical composition of the 5th leaf were not consistent between experiments”
Claim · model-written summary
Ammonium sulfate consistently decreased Ca and Mg concentrations in the 5th leaf compared with calcium nitrate.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- 5th leafe7
- Treatment
- application of ammonium sulfatee7
- Outcome
- Ca and Mg concentrationse7
- Direction
- decreasede7
- Qualifier
- consistentlye7
- Comparator
- calcium nitratee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e7“The application of ammonium sulfate consistently decreased Ca and Mg concentrations in the 5th leaf compared with calcium nitrate”
Claim · model-written summary
Liming significantly decreased leaf potassium, sulfur and boron concentrations.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- 5th leafe1
- Treatment
- Liminge2
- Outcome
- potassium (K), sulfur (S), boron (B)e2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e2“Liming significantly decreased potassium (K), sulfur (S), boron (B), and manganese (Mn) concentrations”
e1“The effects of liming and N source on the chemical composition of the 5th leaf were not consistent between experiments”
Claim · model-written summary
Liming significantly decreased leaf manganese concentration.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- 5th leafe1
- Treatment
- Liminge2
- Outcome
- manganese (Mn) concentrationse2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e2“Liming significantly decreased potassium (K), sulfur (S), boron (B), and manganese (Mn) concentrations”
e1“The effects of liming and N source on the chemical composition of the 5th leaf were not consistent between experiments”
Claim · model-written summary
Liming increased leaf calcium and magnesium concentrations.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- 5th leafe1
- Treatment
- Liminge2
- Outcome
- calcium (Ca) and magnesium (Mg) concentrationse3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e3“and increased calcium (Ca) and magnesium (Mg) concentrations”
e2“Liming significantly decreased potassium (K), sulfur (S), boron (B), and manganese (Mn) concentrations”
e1“The effects of liming and N source on the chemical composition of the 5th leaf were not consistent between experiments”
Claim · model-written summary
Liming significantly decreased tuber cadmium concentrations in all experiments.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- tubere3
- Treatment
- Liminge3
- Outcome
- tuber Cd concentrationse3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e3“Liming significantly decreased tuber Cd concentrations in all experiments”
Claim · model-written summary
Calcium nitrate as the nitrogen source gave significantly higher tuber cadmium concentrations than ammonium sulfate when no calcitic lime was applied.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- calcium nitrate as the N sourcee2
- Outcome
- Cd concentrations in tuberse2
- Direction
- highere2
- Qualifier
- when no calcitic lime was appliede2
- Comparator
- ammonium sulfatee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e2“The use of calcium nitrate as the N source resulted in significantly higher Cd concentrations in tubers compared with ammonium sulfate when no calcitic lime was applied”
Claim · model-written summary
Ca added in the fertilizer may have enhanced Cd uptake by displacing Cd from soil surfaces.
- Taxon
- potatoSolanum tuberosume0
- Compound
- Ca added in this fertilizere1
- Outcome
- enhanced Cd uptakee1
- Qualifier
- displacement of Cd from soil surfacese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potato (Solanum tuberosum L.) cultivars Russet Burbank and Atlantic”
e1“It is possible that Ca added in this fertilizer enhanced Cd uptake through displacement of Cd from soil surfaces”
The same questions in other papers
ammonium sulfate · yield · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
lime · yield · Solanum tuberosum (potato)Results differ
3 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.