Nutrient Deficiency Affects the Growth and Nitrate Concentration of Hydroponic Radish

Sakamoto, Masaru; Komatsu, Yasuo; Suzuki, Takahiro

doi:10.3390/horticulturae7120525

Cited by 17 publications

(6 citation statements)

References 66 publications

(71 reference statements)

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“…Additionally, the observed solution notably affected the levels of total phenols and flavonoids, along with their activities. Decreasing macronutrient concentrations correlated with increased phenolic acids and flavonoids in crops, indicating that plant secondary metabolism was stimulated by low nutrient availability, consistent with previous studies [59,60]. These findings further substantiate that the Resh Tropical Dry Summer solution serves as a well-balanced macronutrient source, mitigating potential elemental antagonism and stress.…”

Section: Discussionsupporting

confidence: 88%

Growth, Triterpene Glycosides, and Antioxidant Activities of Centella asiatica L. Urban Grown in a Controlled Environment with Different Nutrient Solution Formulations and LED Light Intensities

Harakotr,

Charoensup,

Rithichai

et al. 2024

Horticulturae

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Nutrients and light are critical factors for sustained Centella asiatica L. Urban production under a controlled environment. The growth, triterpene glycosides, and antioxidant activities of C. asiatica grown under a controlled environment with different nutrient solution formulations (NFFs) and LED light intensities were investigated. Four different NSFs were tested on plant growth, bioactive compounds, and their activities in a conventional greenhouse. The results showed that the plants grown with Houghland and Arnon solution exhibited better growth performance, whereas the use of Resh’s Tropical Dry Summer solution led to increased bioactive compounds and their activities. Subsequently, Resh’s Tropical Dry Summer solution was selected to evaluate the effect of light intensity in a controlled environment. Plants were grown under three LED light intensities (110, 220, and 330 µmol/m2/s PPFD) compared with fluorescent and natural lights (45 and 326 µmol/m2/s PPFD, respectively). We found that light intensity had the strongest influence on growth, triterpene glycosides, and antioxidant activities. Significantly higher values of the most studied parameters were observed in plants grown under high light intensity compared to those grown under low light intensity. The optimal light intensity was 330 µmol/m2/s PPFD, representing an efficient approach for commercially producing this medicinal plant with a higher yield and medicinal properties in a controlled environment.

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Section: Discussionsupporting

confidence: 88%

Growth, Triterpene Glycosides, and Antioxidant Activities of Centella asiatica L. Urban Grown in a Controlled Environment with Different Nutrient Solution Formulations and LED Light Intensities

Harakotr,

Charoensup,

Rithichai

et al. 2024

Horticulturae

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“…Restriction of other essential nutrients also has adverse effects on the physiological parameters of the plants [14][15][16][17]. A lack of nutrients can reduce the accumulation of phenolic compounds and decrease antioxidant activity [18,19], which would mean a deterioration in the quality of the vegetables.…”

Section: Introductionmentioning

confidence: 99%

Effect of Light Intensity on the Growth and Antioxidant Activity of Sweet Basil and Lettuce

Sutulienė

Laužikė

Pukas³

et al. 2022

Plants

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Light and nutrients are among the most important factors for sustained plant production in agriculture. As one of the goals of the European Green Deal strategy is to reduce energy consumption, greenhouse growers focus on high-value crop cultivation with less-energy-demanding growing systems. This study aimed to evaluate the effect of fertilization at different light intensities on the growth of lettuce and basil and the activity of the antioxidant system. Sweet basil (Ocimum basilicum, ‘Opal’) and lettuce (Lactuca sativa, ‘Nikolaj’) were grown in a greenhouse supplementing natural light (~80 µmol m−2 s−1) with lighting at two photon flux densities (150 and 250 µmol m−2 s−1), 16 h photoperiod, and 20/16 °C day/night temperature in May (Lithuania, 55°60′ N, 23°48′ E). In each light regime treatment, half of the plants were grown without additional fertilization; the other half were fertilized twice a week with a complex fertilizer (NPK 3-1-3). The results showed that the antioxidant activity of basil was most affected by 150 µmol m−2 s−1 PPFD lighting and the absence of fertilization. Altered antioxidant activity in lettuce in the presence of 250 µmol m−2 s−1 PPFD additional light intensity and fertilization resulted in higher morphological parameters.

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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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Nutrient Deficiency Affects the Growth and Nitrate Concentration of Hydroponic Radish

Cited by 17 publications

References 66 publications

Growth, Triterpene Glycosides, and Antioxidant Activities of Centella asiatica L. Urban Grown in a Controlled Environment with Different Nutrient Solution Formulations and LED Light Intensities

Growth, Triterpene Glycosides, and Antioxidant Activities of Centella asiatica L. Urban Grown in a Controlled Environment with Different Nutrient Solution Formulations and LED Light Intensities

Effect of Light Intensity on the Growth and Antioxidant Activity of Sweet Basil and Lettuce

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

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