An elemental analysis of conventionally, organically and self-grown carrots

Krejčová, Anna; Návesník, Jakub; Jičínská, Jaroslava; Černohorský, Tomáš

doi:10.1016/j.foodchem.2015.07.008

Cited by 40 publications

(27 citation statements)

References 24 publications

(48 reference statements)

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“…The content of microelements and trace elements presented in this report it similar to the ones reported in the literature [Warman and Havard 1997, Lisiewska et al 2006, Krejčová et al 2016, Wierzbowska et al 2017. Irrespective of a cultivation system, the weather conditions had a significant effect on the content of zinc, iron, lead and chromium in carrot roots (tab.…”

Section: Organic Cultivation Integrated Cultivationsupporting

confidence: 90%

“…The content of minerals in the plant is affected by the climate and soil conditions, fertilisation, irrigation, application of biostimulators, the genotype of a particular cultivar or variety, as well as the conditions created during the storage of harvested plants and their processing [Warman and Havard 1997, Dyśko and Kaniszewski 2007, Platta and Kolenda 2009, Negrea et al 2012, Singh et al 2012, Kwiatkowski et al 2015. While the genetic variation and environmental conditions have a considerable influence on the content of minerals in edible carrot roots, a cutivation system only slightly modifies its yield [Warman and Havard 1997, Masamba and Nguyen 2008, Bender et al 2009, Hoefkens et al 2009, Bender et al 2015, Krejčová et al 2016, Wierzbowska et al 2017.…”

Section: Introductionmentioning

confidence: 99%

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CULTIVATION SYSTEM VERSUS THE CONTENT OF MINERALS IN CARROT (Daucus carota L.) ROOTS

Wierzbowska

Cwalina-Ambroziak

Zalewska

et al. 2017

Acta Sci. Pol. Hortorum Cultus

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The aim of this research has been to analyse the effect of a cultivation system on the content of minerals in carrot roots. Roots of two carrot cultivars (Koral and Bolero) grown in organic plantations and plantations maintained according to integrated agriculture guidelines were chosen for the study. The thermal and moisture conditions differentiated the content of macro-and microelements more than the cultivation system or genotype specific traits of the cultivars did. In general, a significantly higher content of the analysed minerals was observed in the first year of the experiment. Carrot grown in the integrated system contained higher amounts of N and Mg as well as Cu, Zn and Mn, while organic carrot roots had more P, Fe and Pb. The late cv. Koral contained significantly more P as well as Mg and Cu, Zn and Pb, while the cultivar Bolero was richer in N. With respect to the other elements, no differences were determined between the cultivars. After storage, the content of N in roots of both cultivars decreased, while the levels of the other macronutrients was higher. Larger changes in the content of N, Na, Mg and Ca were detected in roots of the carrot from organic plantations, while P and K differed more in carrot roots from the integrated system.

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Section: Organic Cultivation Integrated Cultivationsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

CULTIVATION SYSTEM VERSUS THE CONTENT OF MINERALS IN CARROT (Daucus carota L.) ROOTS

Wierzbowska

Cwalina-Ambroziak

Zalewska

et al. 2017

Acta Sci. Pol. Hortorum Cultus

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“…The nitrogen dose was 76 kg, according to the principles of integrated production. Carrot is a plant that reacts strongly to nitrogen fertilization by increasing the amount of biomass and accumulating nitrates [26]. Therefore, in terms of quality management, it is very important to develop a fertilization technology that would guarantee safe nitrate content in the produced yield [27].…”

Section: Resultsmentioning

confidence: 99%

Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy

et al. 2020

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Optimization of plant nutrition is a very important part of primary production quality systems. Crop fertilization is the most important agrotechnical measure because it determines the amount and quality of the yield. Moreover, excess fertilization intensifies the eutrophication processes and the greenhouse effect. The study aimed to assess the suitability of slow-release fertilizers in cultivation of carrot subspecies Daucus carota L. ssp. sativus in the integrated production system. The objective was realized on the basis of a strict field experiment set up on a clay loam soil with low nutrient content. The dose of fertilizer was the experimental factor. The fertilizers were applied during the formation of the ridges. Traditional fertilizers (ammonium phosphate, potassium salt, ammonium nitrate, and a multi-component fertilizer Polifoska 6), as well as a multi-component fertilizer with slow release of nutrients, NPK Mg (18-12-24-4), were used. In individual variants of the experiment, different fertilization strategies were applied: integrated production fertilization, traditional fertilization, and fertilization based on the use of slow-release fertilizers. The control treatment comprised of unfertilized plants. The efficiency of nitrogen fertilization was evaluated based on agronomic efficiency, partial factor productivity, physiological efficiency, and removal efficiency. Fertilization strategy significantly impacted the quantity of obtained yield. In the control sample, prior to mineral fertilization, the crop yield was 33.53 Mg·ha −1 . The largest yield was 82.30 Mg·ha −1 .The largest yields were obtained from plants fertilized with a combination of slow-release fertilizers, with nitrogen introduced in the form of ammonium phosphate, and through conventional fertilization. The highest productivity and environmental efficiency were obtained in treatments with fertilization according to the principles of integrated production and with slow-release fertilizers. In terms of environmental efficiency, the best results were obtained through nitrogen fertilization using 400 kg of slow-release fertilizers. The use of slow-release fertilizers in carrot cultivation can significantly improve the efficiency of fertilization, both in terms of production and environmental protection.

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“…Several studies have confirmed elevated levels of secondary metabolites in organic carrots [10], sweet peppers [11], and tomatoes [12]. Other studies have reported opposite results with tomatoes [13] and carrots [14]. Plant secondary metabolites are important for their role in enhancing human health [15], and, as a result, much attention has been dedicated to this family of compounds in the recent comparison studies.…”

Section: Quality and Postharvest Performances Of Organic And Conventimentioning

confidence: 99%

Effect of Organic Production Systems on Quality and Postharvest Performance of Horticultural Produce

2016

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Abstract:Organic standards include a well-defined set of practices and a list of technical tools that are permitted by regulation. Organic products are mainly purchased for their safety and absence of synthetic pesticide residues. Furthermore, a diet based on organic products claims to provide health benefits due to the high nutritional value compounds that are more concentrated in organic products compared to conventional ones. As the scientific basis of the differences between organically-and conventionally-grown fruits and vegetables is under debate, some of the published work, together with some recent unpublished results, will be covered in the present review. In addition, the effect of different approaches to organic horticultural production will be described. Many studies have confirmed lower nitrate content, especially in leafy vegetables, and higher antioxidant compounds in organically-grown fruits in comparison to conventional ones. A recent study reported organic kiwifruit as higher in ascorbic acid and total phenol content than conventional kiwifruit. These differences were maintained throughout cold storage. Similarly, in organic grapes, antioxidant-related compounds were significantly higher than in conventionally-grown grapes. Analogous results were obtained with organic strawberries grown in protected conditions. However, conventional products usually result in higher moisture content, and this should be taken into account to confirm the differences on a dry matter basis. Possible explanations for the effects of organic farming practices on nutritional quality and postharvest performance of fresh produce are the following: (i) organic amendments provide a high input of exogenous organic matter and of nutrients for a long period; in contrast, mineral fertilizers, allowed only in conventional farming systems, are highly concentrated in nutrients that are directly available for root uptake in a shorter time period; (ii) the use of synthetic pesticides (only possible in conventional agriculture) slows down defence mechanisms against pathogens, with the consequence of favoring primary metabolism; (iii) cultural practices may result in different plant composition and nutritional quality, which in turn influence cold storage performance of the products as these differences, both in fertility and pest management, affect the allocation of secondary plant metabolites (such as ascorbic acid and phenolic compounds).

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An elemental analysis of conventionally, organically and self-grown carrots

Cited by 40 publications

References 24 publications

CULTIVATION SYSTEM VERSUS THE CONTENT OF MINERALS IN CARROT (Daucus carota L.) ROOTS

CULTIVATION SYSTEM VERSUS THE CONTENT OF MINERALS IN CARROT (Daucus carota L.) ROOTS

Assessment of the Efficiency of Nitrogen Slow-Release Fertilizers in Integrated Production of Carrot Depending on Fertilization Strategy

Effect of Organic Production Systems on Quality and Postharvest Performance of Horticultural Produce

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