Abstract
Abstract BACKGROUND Chloride sensitivity of the potato ( Solanum tuberosum L.) cultivars Marabel and Désirée was investigated in two pot experiments (soil/sand mixture and hydroponics). It was tested whether there are differential effects of KCl and K 2 SO 4 application on tuber yield and tuber quality, and whether both potato cultivars differ in their chloride sensitivity. RESULTS Tuber yield, dry matter percentage of the tubers, starch concentration and starch yield were not significantly affected by potassium source (K 2 SO 4 or KCl). After exposure to salt stress in hydroponics (100 mmol L −1 NaCl, 50 mmol L −1 Na 2 SO 4 , 50 mmol L −1 CaCl 2 ) for 5 days, 3‐week‐old potato plants had significantly reduced shoot dry mass after NaCl and Na 2 SO 4 application. However, CaCl 2 treatment did not significantly affect shoot growth, although the chloride concentration reached 65 to 74 mg Cl − mg −1 dry matter, similar to the NaCl treatment. In contrast, growth reductions were closely related to sodium concentrations, thus plants suffered sodium toxicity and not chloride toxicity. CONCLUSION Both potato cultivars are chloride‐resistant and can be fertilised with KCl instead of K 2 SO 4 without the risk of depression in tuber yield or tuber quality. The statement that potatoes are chloride‐sensitive and that chloride has negative effects on yield performance needs reconsideration. © 2017 Society of Chemical Industry
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Claims 11
Claim · model-written summary
Potassium source did not significantly affect potato tuber yield.
- Taxon
- potato
Solanum tuberosume1 - Treatment
- potassium source (K 2 SO 4 or KCl)e0
- Outcome
- Tuber yielde0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber yield, dry matter percentage of the tubers, starch concentration and starch yield were not significantly affected by potassium source (K 2 SO 4 or KCl).”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Potassium source did not significantly affect potato tuber dry matter percentage.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- potassium source (K 2 SO 4 or KCl)e0
- Outcome
- dry matter percentage of the tuberse0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber yield, dry matter percentage of the tubers, starch concentration and starch yield were not significantly affected by potassium source (K 2 SO 4 or KCl).”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Potassium source did not significantly affect potato tuber starch concentration.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- potassium source (K 2 SO 4 or KCl)e0
- Outcome
- starch concentratione0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber yield, dry matter percentage of the tubers, starch concentration and starch yield were not significantly affected by potassium source (K 2 SO 4 or KCl).”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Potassium source did not significantly affect potato starch yield.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- potassium source (K 2 SO 4 or KCl)e0
- Outcome
- starch yielde0
- Direction
- not significantly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber yield, dry matter percentage of the tubers, starch concentration and starch yield were not significantly affected by potassium source (K 2 SO 4 or KCl).”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
NaCl stress significantly reduced potato shoot dry mass after five days.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- shoote0
- Treatment
- 100 mmol L −1 NaCle0
- Outcome
- shoot dry masse0
- Direction
- reducede0
- Setting
- hydroponicse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After exposure to salt stress in hydroponics (100 mmol L −1 NaCl, 50 mmol L −1 Na 2 SO 4 , 50 mmol L −1 CaCl 2 ) for 5 days, 3‐week‐old potato plants had significantly reduced shoot dry mass after NaCl and Na 2 SO 4 application.”
Claim · model-written summary
Na2SO4 stress significantly reduced potato shoot dry mass after five days.
- Taxon
- potatoSolanum tuberosume0
- Organ / stage
- shoote0
- Treatment
- 50 mmol L −1 Na 2 SO 4e0
- Outcome
- shoot dry masse0
- Direction
- reducede0
- Setting
- hydroponicse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After exposure to salt stress in hydroponics (100 mmol L −1 NaCl, 50 mmol L −1 Na 2 SO 4 , 50 mmol L −1 CaCl 2 ) for 5 days, 3‐week‐old potato plants had significantly reduced shoot dry mass after NaCl and Na 2 SO 4 application.”
Claim · model-written summary
CaCl2 treatment did not significantly affect potato shoot growth despite high chloride concentration.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- CaCl 2 treatmente0
- Outcome
- shoot growthe0
- Direction
- did not significantly affecte0
- Value
- 65 to 74 mg Cl − mg −1 dry mattere0
- Comparator
- NaCl treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CaCl 2 treatment did not significantly affect shoot growth, although the chloride concentration reached 65 to 74 mg Cl − mg −1 dry matter, similar to the NaCl treatment.”
e1“3‐week‐old potato plants”
Claim · model-written summary
Potato growth reductions were closely related to sodium concentrations.
- Taxon
- potatoSolanum tuberosume1
- Compound
- sodium concentrationse0
- Outcome
- growth reductionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth reductions were closely related to sodium concentrations”
e1“potato plants”
Claim · model-written summary
Authors interpret the potato plants as suffering sodium rather than chloride toxicity.
- Taxon
- potatoSolanum tuberosume1
- Compound
- sodiume0
- Outcome
- sodium toxicity and not chloride toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants suffered sodium toxicity and not chloride toxicity”
e1“potato plants”
Claim · model-written summary
Authors conclude both potato cultivars are chloride-resistant.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- chloride‐resistante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both potato cultivars are chloride‐resistant”
e1“potato ( Solanum tuberosum L.)”
Claim · model-written summary
Authors conclude potato can be fertilized with KCl instead of K2SO4 without depressing tuber yield or quality.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- fertilised with KCl instead of K 2 SO 4 without the risk of depression in tuber yield or tuber qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“can be fertilised with KCl instead of K 2 SO 4 without the risk of depression in tuber yield or tuber quality”
e1“Both potato cultivars”
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See all 69 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.