Root morphology of greenhouse produced muskmelon under sub-surface drip irrigation with supplemental soil aeration

Li, Yuan; Niu, Wenquan; Xu, Jianming; Wang, Jingwei; Zhang, Mingzhi; lv, Wang

doi:10.1016/j.scienta.2016.02.018

Cited by 43 publications

(40 citation statements)

References 42 publications

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“…Usually, air pumps, super micro bubble generating systems or venturi injectors are used to aerate irrigation water. These methods are also named subsurface oxygation, supplemental soil aeration or aerated irrigation323336. The air injected into the irrigation lines via a manifold connected to an air compressor was previously demonstrated by Li et al 3037…”

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confidence: 99%

“…It was hypothesized that varying the volume of air pumped into the root zone and burial depths of drip irrigation tubes (aeration position) would result in an improved soil air environment in the root zone, increase microbial abundance, soil enzyme activity, total length and surface area of roots, and promote nutrient uptake, thus promoting plant growth and fruit output3638. To date, there are no reports in the literature specifically examining the sensitivity of tomato plants in clay loam to soil aeration volume and burial depths of drip irrigation tubes, and how this may impact plant growth and fruit quality.…”

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confidence: 99%

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Yields and Nutritional of Greenhouse Tomato in Response to Different Soil Aeration Volume at two depths of Subsurface drip irrigation

Niu

Dyck

et al. 2016

Sci Rep

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This study investigated the effects of 4 aeration levels (varied by injection of air to the soil through subsurface irrigation lines) at two subsurface irrigation line depths (15 and 40 cm) on plant growth, yield and nutritional quality of greenhouse tomato. In all experiments, fruit number, width and length, yield, vitamin C, lycopene and sugar/acid ratio of tomato markedly increased in response to the aeration treatments. Vitamin C, lycopene, and sugar/acid ratio increased by 41%, 2%, and 43%, respectively, in the 1.5 times standard aeration volume compared with the no-aeration treatment. An interaction between aeration level and depth of irrigation line was also observed with yield, fruit number, fruit length, vitamin C and sugar/acid ratio of greenhouse tomato increasing at each aeration level when irrigation lines were placed at 40 cm depth. However, when the irrigation lines were 15 cm deep, the trend of total fruit yields, fruit width, fruit length and sugar/acid ratio first increased and then decreased with increasing aeration level. Total soluble solids and titrable acid decreased with increasing aeration level both at 15 and 40 cm irrigation line placement. When all of the quality factors, yields and economic benefit are considered together, the combination of 40 cm line depth and “standard” aeration level was the optimum combination.

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confidence: 99%

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confidence: 99%

Yields and Nutritional of Greenhouse Tomato in Response to Different Soil Aeration Volume at two depths of Subsurface drip irrigation

Niu

Dyck

et al. 2016

Sci Rep

Self Cite

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“…Meanwhile, total root surface area and volume under the aeration was 6.6% and 6.7% higher than that of the control, respectively (p > 0.05). Li et al [18] also showed that root morphology (root length, surface area, and volume) increased with increasing frequency of aeration. Root length of greenhouse muskmelon was 7076, 5839, 5207, and 3864 cm, and root surface area was 1217, 1023, 998, and 746 cm 2 , while root volume was 31.0, 26.1, 25.7, and 20.1 cm 3 for daily, 2-day, 4-day, and no aeration, respectively (p < 0.05) [18].…”

Section: Root Morphologymentioning

confidence: 96%

“…Aeration has been determined to increase root dry biomass and root morphology in cucumber [17,18], soybean [1], and even in the conventional staple grain crop [19]. However, there have been few studies regarding tomato root morphology under AI.…”

Section: Root Morphologymentioning

confidence: 99%

“…Additionally, the properties of root morphology (total length, surface area, and volume) not only determine the ability of water and nutrient absorption but also determine the intensity of autotrophic respiration. Studies of root morphology under AI have been conducted in multiple crops [1,[17][18][19], but the effect of AI on roots of greenhouse vegetables is still scarce. In recent years, researchers began to focus on the effects of soil microorganisms and plant growth on soil respiration [14,20,21].…”

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Irrigation Combined with Aeration Promoted Soil Respiration through Increasing Soil Microbes, Enzymes, and Crop Growth in Tomato Fields

et al. 2019

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Soil respiration (Rs) is one of the major components controlling the carbon budget of terrestrial ecosystems. Aerated irrigation has been proven to increase Rs compared with the control, but the mechanisms of CO2 release remain poorly understood. The objective of this study was (1) to test the effects of irrigation, aeration, and their interaction on Rs, soil physical and biotic properties (soil water-filled pore space, temperature, bacteria, fungi, actinomycetes, microbial biomass carbon, cellulose activity, dehydrogenase activity, root morphology, and dry biomass of tomato), and (2) to assess how soil physical and biotic variables control Rs. Therefore, three irrigation levels were included (60%, 80%, and 100% of full irrigation). Each irrigation level contained aeration and control. A total of six treatments were included. The results showed that aeration significantly increased total root length, dry biomass of leaf, stem, and fruit compared with the control (p < 0.05). The positive effect of irrigation on dry biomass of leaf, fruit, and root was significant (p < 0.05). With respect to the control, greater Rs under aeration (averaging 6.2% increase) was mainly driven by soil water-filled pore space, soil bacteria, and soil fungi. The results of this study are helpful for understanding the mechanisms of soil CO2 release under aerated subsurface drip irrigation.

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Artificial soil aeration increases soil bacterial diversity and tomato root performance under greenhouse conditions

Niu

Zhang

et al. 2020

Land Degrad Dev

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Soil aeration can enhance soil enzyme activity and plant growth. These effects may be caused by variations in soil microbial diversity and plant root development. However, little is known about the responses of soil microbial composition, structure, and diversity and plant root development to artificial soil aeration. The aims of this study were to examine the composition, structure, and diversity of rhizosphere bacterial communities and tomato root morphology under four aeration volumes in combination with drip‐tubing placed at two different soil depths. The aeration volumes (V) were 0, 0.5, 1, and 1.5 times (CK, V1, V2, and V3, respectively) the standard aeration volume. The drip irrigation tube burial depths were 15 (D15) and 40 cm (D40). The results demonstrated that soil aeration had a significant influence on root performance (root morphology and activity) and soil bacterial diversity in the tomato root zone. In comparison with the CK treatment, V3 soil aeration increased root length, surface area, tip number, and activity by 7.9%, 6.3%, 14.5%, and 7.0%, respectively. The abundance‐based coverage estimator, Chao index, and Shannon diversity increased by 5.3%, 4.7%, and 3.5%, respectively. The abundance of Acidobacteria increased and that of Gammaproteobacteria decreased in response to the soil aeration treatments; conversely, Geobacteraceae and Halanaerobiaceae were eliminated. Moreover, different subsurface tubing placement depths changed the rhizosphere bacterial community. The results indicate that soil aeration ameliorates hypoxic conditions and provides benefits to soil bacterial communities and root morphology.

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Root morphology of greenhouse produced muskmelon under sub-surface drip irrigation with supplemental soil aeration

Cited by 43 publications

References 42 publications

Yields and Nutritional of Greenhouse Tomato in Response to Different Soil Aeration Volume at two depths of Subsurface drip irrigation

Yields and Nutritional of Greenhouse Tomato in Response to Different Soil Aeration Volume at two depths of Subsurface drip irrigation

Irrigation Combined with Aeration Promoted Soil Respiration through Increasing Soil Microbes, Enzymes, and Crop Growth in Tomato Fields

Artificial soil aeration increases soil bacterial diversity and tomato root performance under greenhouse conditions

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