Effects of microbubble generation methods and dissolved oxygen concentrations on growth of Japanese mustard spinach in hydroponic culture

Ikeura, Hiromi; Takahashi, Hideaki; Kobayashi, Fumiyuki; Sato, Masayuki; Tamaki, Masahiko

doi:10.1080/14620316.2017.1391718

Cited by 18 publications

(12 citation statements)

References 20 publications

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“…24 NBs were shown to enhance the growth of plants by improving the oxygen supply as nutrient elements. 25 Moreover, according to a previous study, 26 rice growth did not differ between plants irrigated with NB water (water saturated by oxygen NBs) and those irrigated with control water (without NBs), but NB water significantly reduced cumulative CH 4 emission during the rice-growing season by 21%. The amounts of iron, manganese, and arsenic that leached into the drainage water before full rice heading were also reduced by the NB water.…”

Section: Introductionmentioning

confidence: 55%

“…Water containing air MBs led to a 2.1 times greater fresh lettuce leaf weight and 1.7 greater dry leaf weight than macrobubble-treated plants . NBs were shown to enhance the growth of plants by improving the oxygen supply as nutrient elements . Moreover, according to a previous study, rice growth did not differ between plants irrigated with NB water (water saturated by oxygen NBs) and those irrigated with control water (without NBs), but NB water significantly reduced cumulative CH 4 emission during the rice-growing season by 21%.…”

Section: Introductionmentioning

confidence: 77%

See 1 more Smart Citation

Influences of Air, Oxygen, Nitrogen, and Carbon Dioxide Nanobubbles on Seed Germination and Plant Growth

Ahmed

Shi

Hua

et al. 2018

J. Agric. Food Chem.

130

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Nanobubbles (NBs) hold promise in green and sustainable engineering applications in diverse fields (e.g., water/wastewater treatment, food processing, medical applications, and agriculture). This study investigated the effects of four types of NBs on seed germination and plant growth. Air, oxygen, nitrogen, and carbon dioxide NBs were generated and dispersed in tap water. Different plants, including lettuce, carrot, fava bean, and tomato, were used in germination and growth tests. The seeds in water-containing NBs exhibited 6-25% higher germination rates. Especially, nitrogen NBs exhibited considerable effects in the seed germination, whereas air and carbon dioxide NBs did not significantly promote germination. The growth of stem length and diameter, leave number, and leave width were promoted by NBs (except air). Furthermore, the promotion effect was primarily ascribed to the generation of exogenous reactive oxygen species by NBs and higher efficiency of nutrient fixation or utilization.

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Section: Introductionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 77%

Influences of Air, Oxygen, Nitrogen, and Carbon Dioxide Nanobubbles on Seed Germination and Plant Growth

Ahmed

Shi

Hua

et al. 2018

J. Agric. Food Chem.

130

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show abstract

“…Fig. S1 showed the difference of the DO levels in all groups, which was positively affected by the timing of nanobubble generation 21 . However, under current operations in this study, the DO levels in all groups fell into a relatively small range of 7.08-7.65 and 7.01-7.26 mg/L in Iris and Echinodorus cultures, respectively (Table 2).…”

Section: Nanobubble Generation and Do Level In Watermentioning

confidence: 99%

Aquatic Macrophytes in Morphological and Physiological Responses to the Nanobubble Technology Application for Water Restoration

et al. 2020

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Nanobubble technology, as an emerging and sustainable approach, has been used for remediation of eutrophication. However, the influence of nanobubbles on the restoration of aquatic vegetation and the mechanisms are unclear. In this study, the effect of nanobubbles at different concentrations on the growth of Iris pseudacorus (Iris) and Echinodorus amazonicus (Echinodorus) was investigated. The results demonstrated that nanobubbles can enhance the delivery of oxygen to plants, while appropriate nanobubble levels will promote plant growth, excess nanobubbles could inhibit plant growth and photosynthesis. The nanobubble concentration thresholds for this switch from growth promotion to growth inhibition were 3.45×10 7 and 1.23×10 7 particles/mL for Iris and Echinodorus, respectively. Below the threshold, an increase in nanobubble concentration enhanced plant aerobic respiration and ROS generations in plants, resulting in superior plant growth. However, above the threshold, high nanobubble concentrations induced hyperoxia stress, particularly in submergent plants, which result in collapse of the antioxidant system and the inhibition of plant physiological activity. The 2 expression of genes involved in modulating redox potential and the oxidative stress response, as well as the generation of relevant hormones, were also altered. Overall, this study provides an evidence-based strategy to guide the future application of nanobubble technology for sustainable management of natural waters.

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“…However, it should be noted that the climatic conditions, cultivars, environment and water quality were different, and that the effect of these factors on water consumption is understandable. In addition, hydroponic systems are different; in the present study the nutrient solution was not exposed in cultivation channels, minimizing losses through direct evaporation resulting from the wind speed or heating of the nutrient solution, as it normally occurs in the nutrient film/deep flow techniques (Ikeura et al 2018). The water-use efficiency values were not satisfactorily described by any mathematical model (Figure 2B), ranging from 0.027 to 0.038 kg L -1 , with average value of 0.031 kg L -1 .…”

Section: Resultsmentioning

confidence: 99%

Production, water-use efficiency and post-harvest quality of hydroponic mini watermelon under salinity stress1

Cova

Neto

et al. 2021

Pesqui. Agropecu. Trop.

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Irregularity or shortage of rainfall in semi-arid regions forces farmers to use low-quality water to irrigate crops. The present study aimed to assess the water-use efficiency and post-harvest quality of ‘Sugar Baby’ mini watermelon in response to different electrical conductivities of the nutrient solution [2.5 (control), 3.5, 4.5, 5.5 and 6.5 dS m-1], in a floating hydroponic system. The experimental design was completely randomized, with four replicates. The water consumption, production and water-use efficiency were evaluated, as well as qualitative and physico-chemical variables of the fruits. The total water consumption of the plants during the crop cycle varied between 43 (6.5 dS m-1) and 54 (2.5 dS m-1) L plant-1 among the treatments, with water-use efficiency of 0.031 kg L-1. The greatest reductions due to the nutrient solution salinity were observed for the rind thickness and fruit mass (8.80 and 5.69 %, respectively, per unit increase in dS m-1). The salinity of the nutrient solution did not influence the soluble solids content and fruit maturity index, but it had a negative effect on the pH and titratable acidity.

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Effects of microbubble generation methods and dissolved oxygen concentrations on growth of Japanese mustard spinach in hydroponic culture

Cited by 18 publications

References 20 publications

Influences of Air, Oxygen, Nitrogen, and Carbon Dioxide Nanobubbles on Seed Germination and Plant Growth

Influences of Air, Oxygen, Nitrogen, and Carbon Dioxide Nanobubbles on Seed Germination and Plant Growth

Aquatic Macrophytes in Morphological and Physiological Responses to the Nanobubble Technology Application for Water Restoration

Production, water-use efficiency and post-harvest quality of hydroponic mini watermelon under salinity stress1

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