Abstract
The efficiency of calcium in enhancing the tolerance of beans (Phaseolus vulgaris L.) to sodium salinization was studied in pot experiments in both cool and hot seasons. In the cool season increased yields of dry matter, roots, nodules and pods were positively correlated with in creased Ca application and negatively correlated with the Na contents of irrigation water and plant tissue. The Na levels both in roots and tops declined significantly as increased amounts of calcium were added. Ca in the range of 2-0 to 8-0 mmol/1 caused competitive inhibition of Na uptake and Na translocation. At Ca levels between 0 to 2-0 mM only Na translocation to tops was markedly inhibited. In warm seasons Ca had no beneficial effects on bean yields at any level of Na. On the contrary, high rates of Ca application resulted in a higher death rate.
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Claims 8
Claim · model-written summary
Yields of dry matter, roots and nodules of beans were positively correlated with increased Ca application in the cool season
- Taxon
- beans (Phaseolus vulgaris L.)
Phaseolus vulgarise0 - Treatment
- Ca applicatione1
- Outcome
- yields of dry matter, roots, nodulese1
- Direction
- positively correlatede1
- Setting
- cool seasone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the cool season increased yields of dry matter, roots, nodules and pods were positively correlated with in creased Ca application and negatively correlated with the Na contents of irrigation water and plant tissue”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
Claim · model-written summary
Pod yield of beans was positively correlated with increased Ca application in the cool season
- Taxon
- beans (Phaseolus vulgaris L.)Phaseolus vulgarise0
- Treatment
- Ca applicatione1
- Outcome
- podse1
- Direction
- positively correlatede1
- Setting
- cool seasone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the cool season increased yields of dry matter, roots, nodules and pods were positively correlated with in creased Ca application and negatively correlated with the Na contents of irrigation water and plant tissue”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
Claim · model-written summary
Yields of beans were negatively correlated with Na contents of irrigation water and plant tissue in the cool season
- Taxon
- beans (Phaseolus vulgaris L.)Phaseolus vulgarise0
- Compound
- Nae1
- Outcome
- yieldse1
- Direction
- negatively correlatede1
- Setting
- cool seasone1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the cool season increased yields of dry matter, roots, nodules and pods were positively correlated with in creased Ca application and negatively correlated with the Na contents of irrigation water and plant tissue”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
Claim · model-written summary
Increased amounts of calcium significantly declined Na levels in roots and tops of beans
- Taxon
- beans (Phaseolus vulgaris L.)Phaseolus vulgarise0
- Organ / stage
- roots and topse2
- Treatment
- increased amounts of calciume2
- Outcome
- Na levelse2
- Direction
- declinede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The Na levels both in roots and tops declined significantly as increased amounts of calcium were added”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
Claim · model-written summary
Ca at 2-0 to 8-0 mmol/1 competitively inhibited Na uptake and Na translocation in beans
- Taxon
- beans (Phaseolus vulgaris L.)Phaseolus vulgarise0
- Treatment
- Ca in the range of 2-0 to 8-0 mmol/1e3
- Outcome
- Na uptake and Na translocatione3
- Direction
- competitive inhibitione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Ca in the range of 2-0 to 8-0 mmol/1 caused competitive inhibition of Na uptake and Na translocation”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
Claim · model-written summary
At Ca levels between 0 and 2-0 mM only Na translocation to tops of beans was markedly inhibited
- Taxon
- beans (Phaseolus vulgaris L.)Phaseolus vulgarise0
- Organ / stage
- topse4
- Treatment
- Ca levels between 0 to 2-0 mMe4
- Outcome
- Na translocation to topse4
- Direction
- markedly inhibitede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Ca levels between 0 to 2-0 mM only Na translocation to tops was markedly inhibited”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
Claim · model-written summary
In warm seasons Ca had no beneficial effect on bean yields at any level of Na
- Taxon
- beans (Phaseolus vulgaris L.)Phaseolus vulgarise0
- Treatment
- Cae5
- Outcome
- bean yieldse5
- Direction
- no beneficial effectse5
- Setting
- warm seasonse5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“In warm seasons Ca had no beneficial effects on bean yields at any level of Na”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
Claim · model-written summary
High rates of Ca application resulted in a higher death rate of beans
- Taxon
- beans (Phaseolus vulgaris L.)Phaseolus vulgarise0
- Treatment
- high rates of Ca applicatione6
- Outcome
- death ratee6
- Direction
- highere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“high rates of Ca application resulted in a higher death rate”
e0“tolerance of beans (Phaseolus vulgaris L.) to sodium salinization”
The same questions in other papers
calcium atom · yield · Phaseolus vulgaris (common bean)Results differ
4 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
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See all 12 papers →calcium atom · nutrient: content · Phaseolus vulgaris (common bean)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
6 papers more in this group
See all 10 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.