Dynamic changes in bubble profile due to surfactant and tape orientation of emitters in drip tape during aerated water irrigation

Bhattarai, Surya P.; Balsys, R.J.; Eichler, Paulo; Midmore, David J.; Wassink, David

doi:10.1016/j.ijmultiphaseflow.2015.05.008

Cited by 12 publications

(9 citation statements)

References 11 publications

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“…For one-line transmission, the gas void fraction peaks at 180 m and then starts dropping to the end of the drip tap. This may indicates that "plugs" of air, as observed by Das et al (2005); Wren et al (2005); Bhattarai et al (2013Bhattarai et al ( , 2015, form at 180 m.…”

Section: Treatmentmentioning

confidence: 84%

“…Lei et al (2016) showed retention characteristics of DO with different surfactant concentrations in aerated irrigation where a Venturi aeration system improved DO concentration in irrigation water and maintained DO above 3.5 ppm over 24 hours. Bhattarai et al (2015) classified bubbles generated using a Venturi aeration system as microbubbles (20 -500 μm), macrobubbles (1-10 mm), and as unseparated air lumps. The measurement of air/water ratio is used to quantify the fraction of air in the irrigation water.…”

Section: Introductionmentioning

confidence: 99%

“…In practice, two-phase flow of air-water is effectively delivered to crops' root zone in 250-m-long rows (Pendergast, Bhattarai, & Midmore, 2013). As most of the aerated water exits the drip tape within 250 m, there is a physical limit to the effectiveness of bubble transmission in long-row drip tape (Bhattarai et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Bhattarai et al . (2015) classified bubbles generated using a Venturi aeration system as microbubbles (20 ‐ 500 μm), macrobubbles (1–10 mm), and as unseparated air lumps. The measurement of air/water ratio is used to quantify the fraction of air in the irrigation water.…”

Section: Introductionmentioning

confidence: 99%

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Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water^*

Liu

Huan

Balsys

et al. 2020

Irrigation and Drainage

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Aerating water using microbubbles in irrigation for drip and subsurface drip irrigation systems has been reported to produce positive effects on plant growth and yield. However, maintaining the uniformity of bubble distribution in irrigation lines across long-row configuration is a challenge. Air injection of microbubbles in irrigation water using a gas diffuser (Seair Diffusion System, Model SA75) has a significant gain in dissolved oxygen (DO) distribution over 850 m length of drip tape. Furthermore, with oxygen injection with a Venturi, DO in irrigation water reached as high as 44 ppm and was maintained well above 35 ppm up to a distance of 700 m and did not drop below 20 ppm, even at a distance of 850 m. Pressure compensated emitters recorded significantly higher DO concentrations compared to nonpressure compensated emitters along the entire length of the irrigation line. Additionally, use of surfactant in irrigation water, up to 4 ppm, resulted in increased gas void fraction and DO concentration compared to the control for both air and oxygen injection irrigation. Highest oxygen saturation was recorded with 4 ppm surfactant, both for air injections (165%) and oxygen injection (438%) treatment along 200 m of non-pressure compensated drip tape.

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Section: Treatmentmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water^*

Liu

Huan

Balsys

et al. 2020

Irrigation and Drainage

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show abstract

“…Carbon isotopic tracing showed that aeration irrigation can be more conducive to carbon allocation and transport to the new branches and fine roots than CK treatment, suggesting that aeration irrigation may have the potential advantage of promoting plant carbon fixation, but further studies are needed in a long period of growth. Bhattarai et al (2015) found that aeration irrigation could effectively promote uptake of phosphorus and potassium in plant leaves. The results showed that aeration irrigation promoted the accumulation of nitrogen, phosphorus, and potassium in new leaves and fine roots, and the total content of phosphorus and potassium was significantly higher than that of CK treatment.…”

Section: Discussionmentioning

confidence: 99%

Aeration Irrigation Can Improve Growth of Table Grape cv. Red Globe (Vitis vinifera L.) in Greenhouse

Zhao¹,

Sun²,

Sheng³

et al. 2019

horts

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Aeration through subsurface drip irrigation (SDI) can promote plant growth and increase crop yield; however, more research is focused on annual crops, and there are few studies on perennial crops. We have studied a new type of SDI (SDI with tanks) suitable for cultivation and production of perennial fruit trees and photovoltaic aeration device in greenhouse. The results showed that aeration irrigation promoted the growth of new leaves, fine roots, and new branches of grape, regulated O 2 /CO 2 content in rhizosphere soil, and accelerated air exchange in rhizosphere soil. This study showed that aeration irrigation did not change the structure of bacteria and fungi but significantly increased the abundance of aerobic bacteria, such as Nitrospira and Cytophagia. Moreover, it promoted the increase of Pseudomonas and Aspergillus related to phosphate solubilization, that of Bacillus related to potassium solubilization, and that of Fusarium related to organic matter (OM) decomposition. This study shows that aeration irrigation through SDI with tanks can promote grape growth, which may be related to the ability of aeration irrigation to change the gas composition of rhizosphere soil, optimize the structure of rhizosphere soil microorganism.

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Aerated drip irrigation increased the emitter clogging risk of the Yellow River water drip irrigation

Lv¹,

Zhang²,

Gan³

et al. 2022

Irrigation and Drainage

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The influence of aeration on the emitter clogging of Yellow River water drip irrigation was evaluated, and reasonable measures to slow down the emitter clogging were investigated. A short-cycle intermittent irrigation test and sediment settlement test were performed under the conditions of aeration and no aeration. The results showed that aeration accelerated the settlement of sediment at the inlet of the flow channel, increased the clogging rate of the flow channel inlet and exacerbated the clogging of the emitter. With the decrease of sediment particle size, aeration increased sediment deposition and emitter clogging. With the increase fencing inlet area, the effect of aeration on sediment settlement and emitter clogging decreased. Under aeration conditions, the upward position of the emitter outlet significantly reduced the mass of emitter blockage and increased the emitter flow compared with the downward positioning of the outlet. Thus, the recommendation is to select an emitter with a large area of fencing inlet, and the outlet of the emitter should be positioned upwards in order to improve the anticlogging performance of the emitter for Yellow River water aerated drip irrigation.

show abstract

Dynamic changes in bubble profile due to surfactant and tape orientation of emitters in drip tape during aerated water irrigation

Cited by 12 publications

References 11 publications

Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water^*

Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water^*

Aeration Irrigation Can Improve Growth of Table Grape cv. Red Globe (Vitis vinifera L.) in Greenhouse

Aerated drip irrigation increased the emitter clogging risk of the Yellow River water drip irrigation

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Dynamic changes in bubble profile due to surfactant and tape orientation of emitters in drip tape during aerated water irrigation

Cited by 12 publications

References 11 publications

Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water*

Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water*

Aeration Irrigation Can Improve Growth of Table Grape cv. Red Globe (Vitis vinifera L.) in Greenhouse

Aerated drip irrigation increased the emitter clogging risk of the Yellow River water drip irrigation

Contact Info

Product

Resources

About

Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water^*

Factors of relevance for improving the uniformity of oxygen distribution in drip irrigation water^*