The Effect of Watering on Yield and Quality of Carrots

Zeipiņa, Solvita; Alsiņa, I.; Lepse, L.

doi:10.17660/actahortic.2014.1038.26

Cited by 9 publications

(7 citation statements)

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“…However, in season one, the plant height was positively affected by irrigation water levels more than in season two. The difference between seasons may be related to temperature and evapotranspiration, as also pointed out by [20].…”

Section: Soil and Irrigation Water Analysismentioning

confidence: 85%

“…These results could be attributed to better water application during the vegetative stage, which helped the crop to utilize the nutrients and make the plant more efficient in attaining its potential photosynthetic activity that enhanced the length of leaves. In connection with this, [20] reported that the length of leaves increases if optimal irrigation water and nutrition are applied during the vegetative stage.…”

Section: Leaf Lengthmentioning

confidence: 91%

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Carrot Productivity under Various Levels of Irrigation and Fertilization

Ciza

Silungwe

Kihupi

2022

ARJA

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Carrot (Daucus carota L.) is normally grown under irrigation system. In Tanzania, carrot productivity is still low, mainly due to poor agronomic practices as a result of limited information on optimal levels of irrigation water that enhance crop production. Thus, a study was conducted to evaluate the interactions between various irrigation levels under drip irrigation and soil-based NPK fertilizer for optimal growth, yield, and sugar content of carrots in Morogoro, Tanzania. The crop water requirement was calculated in terms of crop evapotranspiration (ETc) as the product of ETo, Kc, and the ground cover reduction factor (Kr). Soil-based fertilizer was applied at a level of 150 kg NPK ha-1, while irrigation levels applied were 100, 80, and 60% of ETc. It was found that the growth, yield, and sugar content of carrots were affected differently at various irrigation water (IW) application levels. The growth parameters of carrots improved consistently to optimum IW levels. Further, the highest yield of 33.0 tons ha-1 of carrots was obtained under 100% of IW, and the lowest yield of 18.47 tons ha-1 was obtained at 60% of IW. The 60 and 80% IW level yields did not differ significantly (p>0.05). Carrots grown at a deficit irrigation water level of 80% were found to have the highest content of sugar. Therefore, for optimal growth and yield, an irrigation level of 100% is recommended for carrots. However, for high sugar content, an irrigation level of 80% is recommended.

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Section: Soil and Irrigation Water Analysismentioning

confidence: 85%

Section: Leaf Lengthmentioning

confidence: 91%

Carrot Productivity under Various Levels of Irrigation and Fertilization

Ciza

Silungwe

Kihupi

2022

ARJA

View full text Add to dashboard Cite

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“…Šeregelj et al [44], by optimizing extraction time (20-60 min), temperature (40-120 • C), and extraction cycles number (one to three) using pure ethanol as a solvent, found that the longest extraction (60 min) at medium temperature (80 • C) and in three cycles ensures the maximum yield of carotenoids (30.57 mg/100 g). It has been shown that carotenoid contents in carrot roots are modulated depending on growing locations [45] and water supply [46,47]. Contrary to carotenoids, the extraction of polyphenols was more efficient when water was included as a solvent (116.903-141.740 mg/100 g) compared to pure organic solvents mixtures (55.856-114.565 mg/100 g).…”

Section: Rsm Analysis Of the Extraction Experimentsmentioning

confidence: 99%

Improvement of Carrot Accelerated Solvent Extraction Efficacy Using Experimental Design and Chemometric Techniques

et al. 2021

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Human studies have demonstrated the multiple health benefits of fruits and vegetables. Due to its high fiber, mineral and antioxidant content, carrot is an ideal source for the development of nutraceuticals or functional ingredients. Current research assesses accelerated solvent extraction (ASE) traits which affect the antioxidant qualities of carrot extract using response surface methodology (RSM), hierarchical cluster analysis (HCA), and the sum of ranking differences (SRD). A mixture of organic solvents, acetone, and ethanol with or without the addition of 20% water was applied. The total carotenoid and polyphenol contents in extracts, as well as their scavenging activity and reducing power, were used as responses for the optimization of ASE extraction. RSM optimization, in the case of 20% water involvement, included 49% of acetone and 31% of ethanol (Opt1), while in the case of pure organic solvents, pure ethanol was the best choice (Opt2). The results of HCA clearly pointed out significant differences between the properties of extracts with or without water. SRD analysis confirmed ethanol to be optimal as well. RSM, HCA, and SRD analysis confirmed the same conclusion—water in the solvent mixture can significantly affect the extraction efficacy, and the optimal solvent for extracting antioxidants from carrot by ASE is pure ethanol.

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“…Sandhu et al 18 have shown that a higher nitrogen fertilization increased carotenoid accumulation in carrot root. In addition, Singh et al 19 20 have shown that drip and sprinkler irrigation systems did not affect carotenoid accumulation in carrot roots. Ombodi et al 21 have shown that carotenoid accumulation is modulated depending on water quantity supply (sprinkler irrigation system compared to rain supply) but results depended on the year.…”

Section: ■ Introductionmentioning

confidence: 98%

“…Recently, other works concerning water supply (drip irrigation, sprinkler, and rain-fed irrigation) have been investigated. Zeipiņa et al . have shown that drip and sprinkler irrigation systems did not affect carotenoid accumulation in carrot roots.…”

Section: Introductionmentioning

confidence: 99%

Differential Pigment Accumulation in Carrot Leaves and Roots during Two Growing Periods

Perrin

Brahem

Dubois-Laurent

et al. 2016

J. Agric. Food Chem.

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Carotenoids are important secondary metabolites involved in plant growth and nutritional quality of vegetable crops. These pigments are highly accumulated in carrot root, but knowledge about the impact of environmental factors on their accumulation is limited. The purpose of this work was to investigate the impact of environmental variations on carotenoid accumulation in carrot leaves and roots. In this work, carrots were grown during two contrasting periods to maximize bioclimatic differences. In leaves, carotenoid and chlorophyll contents were lower in the less favorable growing conditions, whereas relative contents were well conserved for all genotypes, suggesting a common regulatory mechanism. The down-regulation of all genes under environmental constraints demonstrates that carotenoid accumulation is regulated at the transcriptional level. In roots, the decrease in α-carotene and lutein contents was accompanied by an increase of β-carotene relative content. At the transcriptional level, LCYB and ZEP expression increased, whereas LCYE expression decreased, in the less favorable conditions, suggesting that carotenoid biosynthesis is switched toward the β-branch.

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The Effect of Watering on Yield and Quality of Carrots

Cited by 9 publications

References 0 publications

Carrot Productivity under Various Levels of Irrigation and Fertilization

Carrot Productivity under Various Levels of Irrigation and Fertilization

Improvement of Carrot Accelerated Solvent Extraction Efficacy Using Experimental Design and Chemometric Techniques

Differential Pigment Accumulation in Carrot Leaves and Roots during Two Growing Periods

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