Abstract
Effect of Potassium Foliar Nutrition on Changes in the Content of Carotenoid Pigments and on Some Parameters of the Nutritional Value of Tomato Fruit The aim of the study was to investigate the effect of potassium foliar nutrition on changes in the content of carotenoid pigments and on some parameters of the nutritional value of tomato fruit. The experiments were conducted on three tomato cultivars: Faustine F 1 , Atut F 1 and Magnus F 1 . All trial plots with plants were additionally fertilized with 0.3% Final K and 0.3% Kalisol whilst in the control plots no foliar nutrition with potassium was applied. The chemical composition of tomato fruit depended on two factors: tomato cultivar and fertilization method and differed from year to year of investigation. In 2005 neither the cultivar nor the foliar fertilization affected the level of β-carotene while the fertilization with Final K resulted in the increase of lycopene content compared with the control. In 2006 and 2007 the fruits from treatments fertilized with Kalisol had significantly higher content of β-carotene and lycopene in compareson with those treated with Final K. The obtained results do not clearly show the effect of potassium foliar fertilization on the increase of dry matter, sugars or acids contant in tomatoes. Foliar fertilization with Kalisol increased the content of L-ascorbic acid in tomatoes in 2005 and 2007. In 2006 the content of this acid in fruit treated with Kalisol was at the same level as untreated plants but higher in plants treated with Final K. The effect of foliar nutrition with potassium had a variable influence on the level of the investigated macroelements (K, P, Ca, Mg). The content of β-carotene was positively correlated with the content of phosphorus and negatively correlated with the acidity of fruit.
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Claims 10
Claim · model-written summary
Tomato fruit composition varied with cultivar, fertilizer method and year.
- Taxon
- tomato
Solanum lycopersicume0 - Material
- tomato cultivare0
- Outcome
- chemical composition of tomato fruite0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The chemical composition of tomato fruit depended on two factors: tomato cultivar and fertilization method and differed from year to year of investigation”
Claim · model-written summary
Neither cultivar nor foliar fertilizer changed beta carotene in 2005.
Not reportedTaxonComparator
Verbatim
e0“In 2005 neither the cultivar nor the foliar fertilization affected the level of β-carotene”
Claim · model-written summary
Final K increased lycopene content over the control in 2005.
- Treatment
- fertilization with Final Ke0
- Outcome
- lycopene contente0
- Direction
- increasee0
- Comparator
- the controle0
Not reportedTaxon
Verbatim
e0“fertilization with Final K resulted in the increase of lycopene content compared with the control”
Claim · model-written summary
Kalisol fruit had significantly higher beta carotene than Final K fruit in 2006 and 2007.
Not reportedTaxon
Verbatim
e0“In 2006 and 2007 the fruits from treatments fertilized with Kalisol had significantly higher content of β-carotene and lycopene in compareson with those treated with Final K”
Claim · model-written summary
Effects of potassium foliar fertilizer on dry matter, sugars and acids were unclear.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- potassium foliar fertilizatione0
- Outcome
- dry matter, sugars or acids contante0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The obtained results do not clearly show the effect of potassium foliar fertilization on the increase of dry matter, sugars or acids contant in tomatoes”
Claim · model-written summary
Kalisol increased L-ascorbic acid in tomatoes in 2005 and 2007.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- Kalisole0
- Outcome
- content of L-ascorbic acide0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar fertilization with Kalisol increased the content of L-ascorbic acid in tomatoes in 2005 and 2007”
Claim · model-written summary
In 2006 Kalisol fruit had the same acid content as untreated fruit but exceeded Final K fruit.
- Treatment
- Kalisole0
- Outcome
- content of this acide0
- Direction
- at the same levele0
- Comparator
- untreated plantse0
Not reportedTaxon
Verbatim
e0“In 2006 the content of this acid in fruit treated with Kalisol was at the same level as untreated plants but higher in plants treated with Final K”
Claim · model-written summary
Potassium foliar nutrition variably influenced K, P, Ca and Mg levels.
- Treatment
- foliar nutrition with potassiume0
- Outcome
- level of the investigated macroelements (K, P, Ca, Mg)e0
Not reportedTaxonComparatorDirection
Verbatim
e0“The effect of foliar nutrition with potassium had a variable influence on the level of the investigated macroelements (K, P, Ca, Mg)”
Claim · model-written summary
Beta carotene content correlated positively with phosphorus content.
Not reportedTaxon
Verbatim
e0“The content of β-carotene was positively correlated with the content of phosphorus”
Claim · model-written summary
Beta carotene content correlated negatively with fruit acidity.
Not reportedTaxonSettingQualifier
Verbatim
e0“negatively correlated with the acidity of fruit”
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