Paper · 2019 · Agronomy

The Impact of Organic vs. Conventional Agricultural Practices on Selected Quality Features of Eight Potato Cultivars

Renata Kazimierczak; Dominika Średnicka-Tober; Ewelina Hallmann; et al.

6
claims
14
verbatim quotes
58
citations
2
research areas
✓
Open access · cc-by

Abstract

An organic agricultural system based on natural methods and means of production is an alternative to intensive agriculture. The available research suggests that organic crops, in comparison to the conventional ones, are richer in phenolics and other antioxidants while containing less undesirable pesticide residues and nitrates. The aim of this study was to determine concentrations of polyphenols, lutein, vitamin C, and nitrates in eight potato cultivars (Mazur, Justa, Lawenda, Lech, Tacja, Laskana, Otolia, Magnolia) grown organically and conventionally in a controlled field experiment in Poland. Significant differences between potato tubers of the tested cultivars coming from organic and conventional production were identified for the majority of parameters. Higher concentrations of nitrates and lutein were found in conventional compared to the organic tubers, while organic potatoes were, on average, richer in phenolic compounds. Among the tested cultivars, Magnolia, Otolia, and Laskara were richest in vitamin C and phenolics. Otolia and Laskara also accumulated the highest levels of nitrates. If further confirmed, these observations might be of importance for the producers and consumers, who increasingly search for foods from sustainable and well-controlled agricultural systems.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Potato tubers from organic and conventional production differed significantly for the majority of measured parameters

Organ / stage
potato tuberse1
Treatment
organice1
Outcome
majority of parameterse1
Comparator
conventionale1
Setting
controlled field experiment in Polande6

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“Significant differences between potato tubers of the tested cultivars coming from organic and conventional production were identified for the majority of parameters”

✓ located verbatim in the source · abstract, characters 603–767 · show in text ↑
e6

“in a controlled field experiment in Poland”

✓ located verbatim in the source · abstract, characters 559–601 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Conventional production gave higher nitrate concentrations in potato tubers than organic production

Organ / stage
tuberse2
Treatment
conventionale2
Outcome
concentrations of nitratese2
Direction
Highere2
Comparator
organice2
Setting
controlled field experiment in Polande6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“Significant differences between potato tubers of the tested cultivars coming from organic and conventional production were identified for the majority of parameters”

✓ located verbatim in the source · abstract, characters 603–767 · show in text ↑
e2

“Higher concentrations of nitrates and lutein were found in conventional compared to the organic tubers”

✓ located verbatim in the source · abstract, characters 769–871 · show in text ↑
e6

“in a controlled field experiment in Poland”

✓ located verbatim in the source · abstract, characters 559–601 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Conventional production gave higher lutein concentrations in potato tubers than organic production

Organ / stage
tuberse2
Treatment
conventionale2
Outcome
luteine2
Direction
Highere2
Comparator
organice2
Setting
controlled field experiment in Polande6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“Significant differences between potato tubers of the tested cultivars coming from organic and conventional production were identified for the majority of parameters”

✓ located verbatim in the source · abstract, characters 603–767 · show in text ↑
e2

“Higher concentrations of nitrates and lutein were found in conventional compared to the organic tubers”

✓ located verbatim in the source · abstract, characters 769–871 · show in text ↑
e6

“in a controlled field experiment in Poland”

✓ located verbatim in the source · abstract, characters 559–601 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic potato tubers were on average richer in phenolic compounds

Treatment
organice3
Outcome
phenolic compoundse3
Direction
richere3
Qualifier
on averagee3
Setting
controlled field experiment in Polande6

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e3

“organic potatoes were, on average, richer in phenolic compounds”

✓ located verbatim in the source · abstract, characters 879–942 · show in text ↑
e6

“in a controlled field experiment in Poland”

✓ located verbatim in the source · abstract, characters 559–601 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Magnolia, Otolia and Laskara were the richest potato cultivars in vitamin C and phenolics

Material
Magnolia, Otolia, and Laskarae4
Outcome
vitamin C and phenolicse4
Direction
richeste4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“Significant differences between potato tubers of the tested cultivars coming from organic and conventional production were identified for the majority of parameters”

✓ located verbatim in the source · abstract, characters 603–767 · show in text ↑
e4

“Among the tested cultivars, Magnolia, Otolia, and Laskara were richest in vitamin C and phenolics”

✓ located verbatim in the source · abstract, characters 944–1041 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Otolia and Laskara potato tubers accumulated the highest nitrate levels

Material
Otolia and Laskarae5
Outcome
levels of nitratese5
Direction
higheste5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e1

“Significant differences between potato tubers of the tested cultivars coming from organic and conventional production were identified for the majority of parameters”

✓ located verbatim in the source · abstract, characters 603–767 · show in text ↑
e5

“Otolia and Laskara also accumulated the highest levels of nitrates”

✓ located verbatim in the source · abstract, characters 1043–1109 · show in text ↑

cultivation system · quality: phytochemicals · Solanum tuberosum (potato)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive
See all 4 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.