Effect of Partial Excision of Early Taproots on Growth and Components of Hydroponic Carrots

Sakamoto, Masaru; Wada, Masanori; Suzuki, Takahiro

doi:10.3390/horticulturae6010005

Cited by 4 publications

(4 citation statements)

References 37 publications

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“…To investigate the effect of SR on the polyphenol content of leaves, polyphenols were extracted from leaf segments cut to 1 cm 2 with 50% aqueous methanol and measured for absorbance at 765 nm using the Folin–Ciocalteu method previously reported [ 33 , 34 ]. The effects of SR were analyzed using the “765 nm absorbance × dilution ratio” as the phenol content index per leaf area.…”

Section: Methodsmentioning

confidence: 99%

Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation

Suzuki

Sakamoto

Kubo

et al. 2023

Plants

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The purpose of this study was to develop a novel method to dramatically improve the production efficiency of sweet potatoes (Ipomoea batatas (L.) Lam.) by elucidating the effect of solar radiation stress on the growth of sweet potato in a multilayer cultivation system. Twenty-five pots planted with sweet potato vine seedlings were arranged in three layers and cultivated for 160 days while supplying liquid fertilizer to the root zone. While solar radiation in the middle and lower layers decreased to 69% and 45% of that in the upper layer, respectively, the yield of tuberous roots was 0.89 kg/pot in the upper layer, 0.79 kg/pot in the middle layer, and 0.66 kg/pot in the lower layer. As a result, the productivity of tuberous roots reached 10.5 kg/m2, 4.4 times that of conventional farming. On the other hand, the amounts of leaves and stems increased in the lower layer than in the upper layer, and the biomass energy yield (photosynthetic efficiency) was 2.8% in the upper layer, 3.7% in the middle layer, and 5.1% in the lower layer. Leaves in the lower layer with less solar radiation had a lower polyphenol content and increased the amounts of low-brightness leaves. In contrast, the upper leaves were found to contain more polyphenols and have brighter, smaller leaves. These results suggest that the yield can be further increased by optimizing solar radiation stress by using the multilayer cultivation method.

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Section: Methodsmentioning

confidence: 99%

Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation

Suzuki

Sakamoto

Kubo

et al. 2023

Plants

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“…A healthy and manageable root environment is offered by hydroponics. Sakamoto et al (2020) reported that hydroponic carrots (Daucus carota) could be shaped differently based on partially removed early taproots. They observed how partial removal of early hydroponic carrots' early taproots influences their growth mechanisms.…”

Section: Carrot Productionmentioning

confidence: 99%

Comprehensive Review of Aquaponic, Hydroponic, and Recirculating Aquaculture Systems

Rajalakshmi

Manoj

2022

J Exp Bio & Ag Sci

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Hydroponics and aquaponics are emergent agricultural techniques that offer several environmental solutions. It is anticipated that the hydroponic systems will result in a more significant profit from selling vegetables and other plants. The use of new technologies, such as hydroponics and aquaponics, has been demonstrated to increase the number of plants that can be grown. The recirculatory aquaculture system makes it possible to multiply fish production while consuming fewer resources. Essential factors of this technology include higher yield, safety, and water management. In addition, the scope of potential future research in hydroponics and aquaponics has been discussed. Furthermore, the paper identifies and discusses the various applications of hydroponics and aquaponics in agriculture.

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“…Total phenol content was measured using the Folin-Ciocalteu method as described previously [23]. The central part of the taproot or the fibrous root from one plant was sliced and homogenized with a mortar and pestle.…”

Section: Measurement Of Total Phenol Contentmentioning

confidence: 99%

Nutrient Deficiency Affects the Growth and Nitrate Concentration of Hydroponic Radish

2021

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In hydroponics, a continuous supply of mineral nutrients is essential for plant growth. However, constitutive nutrient-rich conditions also increase the nitrate content in the plants, which can be harmful to human health. Here, we investigated the effect of nutrient deficiency on the growth and component composition of hydroponic radish by changing the timing of nutrient removal from the hydroponic solution. Radish plants that were 14 days old were transferred to four different nutrient conditions for 14 days: nutrient deficiency for 14 days (WW), full nutrient for 14 days (NN), nutrient deficiency for the last 7 days (NW), and nutrient deficiency for the first 7 days (WN). After the treatments, the NW plants had similar taproot growth to NN plants. In contrast, the WN plants significantly reduced taproot growth. The WW plants reduced the shoot and taproot weight and their water contents. The nitrate content in the taproots was reduced in the NW and WW plants. The WW plants contained lower total phenol and higher ascorbic acid and sugar contents. These results suggest that the uptake of nutrient minerals at the young growth stage is important for the growth of radish taproot. Nutrient deficiency management can be one of the most effective tools for regulating radish growth and composition.

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Effect of Partial Excision of Early Taproots on Growth and Components of Hydroponic Carrots

Cited by 4 publications

References 37 publications

Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation

Effects of Solar Radiation on Leaf Development and Yield of Tuberous Roots in Multilayered Sweet Potato Cultivation

Comprehensive Review of Aquaponic, Hydroponic, and Recirculating Aquaculture Systems

Nutrient Deficiency Affects the Growth and Nitrate Concentration of Hydroponic Radish

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