Effects of different fertilization practices on the carotene content of carrot

Evers, Aino-Maija

doi:10.23986/afsci.72347

Cited by 17 publications

(19 citation statements)

References 4 publications

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“…In addition to chlorophyll, chloroplasts also contain carotenoids and proteins whose contents rise likewise in carrots with increasing use of nitrogen fertiliser. 25,38,39 An investigation by Habben 16 established a 138% increase of carotenoids in carrot leaves and a 10% increase in the roots through application of nitrogen fertiliser. Induction of chloroplast synthesis results from light energy and high nitrate content in the plant cell.…”

Section: 2233±35mentioning

confidence: 99%

Nitrogen nutrition and flavour compounds of carrots (Daucus carota L) cultivated in Mitscherlich pots

Schaller¹,

Schnitzler²

2000

J. Sci. Food Agric.

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Section: 2233±35mentioning

confidence: 99%

Nitrogen nutrition and flavour compounds of carrots (Daucus carota L) cultivated in Mitscherlich pots

Schaller¹,

Schnitzler²

2000

J. Sci. Food Agric.

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“…Carotenoid synthesis is associated with the level of nitrogen in the soil, but the number of sunny days in the vegetation period is also a very important factor (Evers 1989). In the case of carrots, Kaack et al (2002) proved that when more mineral nitrogen was readily available in the soil at the beginning of the cultivation, more b-carotene was synthesized in carrot roots before the harvest time.…”

mentioning

confidence: 99%

Effects of organic and conventional production systems on the content of bioactive substances in four species of medicinal plants

Kazimierczak

Hallmann

Rembiałkowska

2014

Biological Agriculture & Horticulture

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This paper aimed to compare the content of compounds with antioxidant properties in four species of medicinal plants, rosemary, peppermint, lemon balm and sage grown under organic and conventional conditions in 2 consecutive years. The dry matter and vitamin C content was determined according to Polish Standards; carotenoids and polyphenols were analysed by high-performance liquid chromatography. Organic medicinal plants contained significantly more dry matter, vitamin C, phenolic acids and total flavonoids than the plants from conventional production. On the other hand, conventional plants contained significantly more carotenoids than the organic ones. A high content of beneficial bioactive compounds in medicinal plants, especially coming from organic farming, is an important prerequisite for their use in a healthy diet.

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“…On the other hand, Rembiałkowska (2000b) showed that two cultivars, Regulska and Montana, contained significantly more β-carotene when they were grown in the conventional system. Opposing this are reports by Evers (1989) and Rembiałkowska and Hallmann (2007), who found that the opposite was true, i.e. that organic carrots were richer in β-carotene.…”

Section: Resultsmentioning

confidence: 92%

Comparison of the Nutritional Value and Storage Life of Carrot Roots From Organic and Conventional Cultivation

Wrzodak

Szwejda‐Grzybowska

Elkner

et al. 2012

Journal of Fruit and Ornamental Plant Research

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In the years 2008-2011, research was conducted whose objective was to assess the nutritional value and storage life of the roots of the carrot cultivars Perfekcja and Regulska grown in conventional and organic systems. The carrot roots came from a certified experimental field with a stable ecosystem adapted to conducting research on the organic cultivation of vegetables. In parallel, in the same climatic conditions, carrots were grown in the conventional system. The carrot roots were stored at a temperature of 0-1°C and relative humidity of 95-98%. Immediately after harvest and after several months of storage, the carrot roots were analyzed for dry matter content, total sugars, β-carotene, and nitrates. The results of the qualitative chemical assessment of the carrots showed no significant differences in the levels of dry matter and total sugars depending on the cultivar and the cultivation and storage methods (on average for three years). The carrots grown by the conventional method contained significantly more β-carotene than the carrots grown by the organic method, both before and after storage. It was found that the roots of the carrot cultivar Regulska had a higher β-carotene content than the roots of the cultivar Perfekcja grown in both the organic and conventional systems. The nitrate content in carrot roots immediately after harvesting both cultivars grown in the conventional system was significantly higher than in the roots from organic cultivation and ranged from 349.9 to 554.4 mg•kg -1 . There were marked differences in storage life depending on the cultivar, cultivation method and storage period. A higher percentage of marketable roots after storing the cultivars Regulska and Perfekcja was achieved from conventional cultivation compared with organic cultivation. Losses (diseased roots and weight losses) were higher for the organic carrots than for those grown conventionally. There was a markedly higher percentage of marketable roots among the carrots of the cultivar Regulska compared with Perfekcja. For the cultivar Perfekcja, more diseased roots were found among the organically grown carrots. For the cultivar Regulska, the highest 138 VEGETABLE CROPS RESEARCH BULLETIN 76 _____________________________________________________________________________________________________ weight losses were recorded following the storage of the roots from organic cultivation.

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Effects of different fertilization practices on the carotene content of carrot

Cited by 17 publications

References 4 publications

Nitrogen nutrition and flavour compounds of carrots (Daucus carota L) cultivated in Mitscherlich pots

Nitrogen nutrition and flavour compounds of carrots (Daucus carota L) cultivated in Mitscherlich pots

Effects of organic and conventional production systems on the content of bioactive substances in four species of medicinal plants

Comparison of the Nutritional Value and Storage Life of Carrot Roots From Organic and Conventional Cultivation

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