Abstract
Two cultivars of spinach and one cultivar of komatsuna were sand cultured using a nutrient solution with Na and K in various combinations. The growth (fresh weight of shoot) of spinach cv. Atlas was significantly increased when 1.4 mM KC1 of the 7 m M KO was replaced with 1.4 mM NaCl, although the growth was reduced when more KC1 was replaced with NaCl. In another spinach cv. All Right, however, NaCl substituting for 20% of KC1 showed no significant effects. In komatsuna, Na used in place of K at any ratio reduced the growth. The growth of spinach cv. Atlas was increased by applying 20 mM NaCl, irrespective of K dose (480 - 2400 mg K2O per 1/2000 a Wagner pot). The growth of spinach cv. All Right was also increased by 20 mM NaCl when K was at a deficient level (480 - 960 mg K20 per pot), but was not when K was at: an excessive level (1920 - 2400 mg K2O per pot). In komatsuna, 20 mM NaCl reduced the growth. In spinach, Na prevented the decrease of the photosynthetic rate and stomatal conductance caused by K deficiency.
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Claims 9
Claim · model-written summary
Partial sodium substitution significantly increased Atlas spinach shoot fresh weight.
- Taxon
- spinach
Spinacia oleraceae0 - Material
- Atlase0
- Treatment
- 1.4 mM KC1 of the 7 m M KO was replaced with 1.4 mM NaCle0
- Outcome
- growth (fresh weight of shoot)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth (fresh weight of shoot) of spinach cv. Atlas was significantly increased when 1.4 mM KC1 of the 7 m M KO was replaced with 1.4 mM NaCl”
Claim · model-written summary
Greater potassium replacement with sodium reduced Atlas spinach growth.
- Taxon
- spinachSpinacia oleraceae1
- Material
- Atlase1
- Treatment
- more KC1 was replaced with NaCle0
- Outcome
- growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth was reduced when more KC1 was replaced with NaCl”
e1“The growth (fresh weight of shoot) of spinach cv. Atlas”
Claim · model-written summary
Sodium replacing 20% of potassium chloride did not significantly affect All Right spinach.
- Taxon
- spinachSpinacia oleraceae0
- Material
- All Righte0
- Treatment
- NaCl substituting for 20% of KC1e0
- Outcome
- effectse0
- Direction
- no significant effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In another spinach cv. All Right, however, NaCl substituting for 20% of KC1 showed no significant effects”
Claim · model-written summary
Sodium replacing potassium at any ratio reduced komatsuna growth.
Not reportedComparator
Verbatim
e0“In komatsuna, Na used in place of K at any ratio reduced the growth”
Claim · model-written summary
Applying 20 mM sodium chloride increased Atlas spinach growth across potassium doses.
- Taxon
- spinachSpinacia oleraceae0
- Material
- Atlase0
- Treatment
- applying 20 mM NaCle0
- Outcome
- growthe0
- Direction
- increasede0
- Qualifier
- irrespective of K dose (480 - 2400 mg K2O per 1/2000 a Wagner pot)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of spinach cv. Atlas was increased by applying 20 mM NaCl, irrespective of K dose (480 - 2400 mg K2O per 1/2000 a Wagner pot)”
Claim · model-written summary
Applying 20 mM sodium chloride increased All Right spinach growth under potassium deficiency.
- Taxon
- spinachSpinacia oleraceae0
- Material
- All Righte0
- Treatment
- 20 mM NaCle0
- Outcome
- growthe0
- Direction
- increasede0
- Qualifier
- K was at a deficient level (480 - 960 mg K20 per pot)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of spinach cv. All Right was also increased by 20 mM NaCl when K was at a deficient level (480 - 960 mg K20 per pot)”
Claim · model-written summary
Applying 20 mM sodium chloride did not increase All Right spinach growth under excess potassium.
- Taxon
- spinachSpinacia oleraceae1
- Material
- All Righte1
- Treatment
- 20 mM NaCle1
- Outcome
- growthe1
- Direction
- was note0
- Qualifier
- K was at: an excessive level (1920 - 2400 mg K2O per pot)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but was not when K was at: an excessive level (1920 - 2400 mg K2O per pot)”
e1“The growth of spinach cv. All Right was also increased by 20 mM NaCl”
Claim · model-written summary
Applying 20 mM sodium chloride reduced komatsuna growth.
Not reportedComparator
Verbatim
e0“In komatsuna, 20 mM NaCl reduced the growth”
Claim · model-written summary
Sodium prevented potassium-deficiency declines in spinach photosynthesis and stomatal conductance.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- Nae0
- Outcome
- photosynthetic rate and stomatal conductancee0
- Direction
- prevented the decreasee0
- Qualifier
- K deficiencye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In spinach, Na prevented the decrease of the photosynthetic rate and stomatal conductance caused by K deficiency”
The same questions in other papers
sodium chloride · growth · Spinacia oleracea (spinach)Results differ
4 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
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.