Soil water and root distribution of apple tree (Malus pumila Mill) stands in relation to stand age and rainwater collection and infiltration system (RWCI) in a hilly region of the Loess Plateau, China

Song, Xiaolin; Gao, Xiaodong; Dyck, Miles; Zhang, Wei; Wu, Pute; Yao, Jie; Zhao, Xining

doi:10.1016/j.catena.2018.06.026

Cited by 59 publications

(20 citation statements)

References 41 publications

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“…The δ 18 O and Hydrus-1D methods were used to analyze variations in the RWU given the field data, which ranged from 0-60 cm during the growth season, but was concentrated at depths of 0-40 cm depth. Although apples are deep-rooted [3], the zone of RWU was in the shallow profile under surface irrigation in this study. For this reason, a deep irrigation depth of surface irrigation would increase the percolation below the root zone.…”

Section: Evaluation Of Models Of the Rwu Rate For Apples At Differentmentioning

confidence: 59%

“…With agricultural water resources around the world experiencing increasing shortages, research that explores how to effectively improve the efficiency of agricultural water use has become essential [1,2]. The apple tree is the main income-generating fruit crop that is grown on the Loess Plateau in China [3]. Apple trees consume high levels of water and are frequently subjected to drought stress [4], so are therefore more dependent on irrigation water to ensure both crop yield and quality [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

Zheng

Sun

et al. 2018

Water

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The future production of irrigated fruit orchards in the Loess Plateau of China is threatened by a shortage of freshwater. To improve water use efficiency under conditions where irrigation is limited, it is necessary to quantify the root water uptake (RWU) of apple trees. The RWU of apple trees was estimated under surface irrigation using water stable isotope technology and the Hydrus-1D model. Using the Romero-Saltos and IsoSource models, the stable isotopes of water in stems, different soil depths, and different precipitation were analyzed in a 5-year-old dwarfing apple orchard during two seasons 2016 and 2017. Hydrus-1D model was able to simulate the RWU of apple using the maximum coefficient of determination (0.9), providing a root mean square error of 0.019 cm 3 cm −3 and a relative error of 2.25%. The results showed that the main depth of RWU ranged from 0-60 cm during the growth season, with the main contribution occurring in the 0-40 cm depth. These findings indicated that reducing the traditional surface irrigation depth will be important for improving the irrigation water use efficiency.

show abstract

Section: Evaluation Of Models Of the Rwu Rate For Apples At Differentmentioning

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

Zheng

Sun

et al. 2018

Water

View full text Add to dashboard Cite

show abstract

“…Overall, the most important lesson from the previous studies is that root length density profiles are site-specific, and depend on species and water application. Consequently, the rate and the spatial distribution of root water uptake varies significantly, depending on soil water availability 13,26 , the distance from the tree trunk 34,36 , the tree age 37 , the intensity of meteorological factors during the day 32 , but also is different in the growing season 6,38 and depends on soil practices 39 . Finally, root length density distributions may be estimated from dynamic soil moisture measurements 40,41 .…”

Section: Introductionmentioning

confidence: 99%

Assessing the extent of citrus trees root apparatus under deficit irrigation via multi-method geo-electrical imaging

Mary

Vanella

Consoli

et al. 2019

Sci Rep

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Tree rooting strategies are driven by external and internal factors such as climate conditions (rain frequency, wind direction), soil structure and crop type. In order to ensure water efficiency for irrigated crops, it is essential to know how each crop adapts its rooting strategy. We couple Mise-a-la-masse (MALM) with Electrical Resistivity Tomography (ERT) for investigating orange tree roots undergoing different irrigation strategies (Partial Root-zone Drying – or PRD - versus Full Irrigation). This is a totally novel approach giving an overall picture of roots structure and functioning in the subsoil. Our results show clear differences of rooting extent between different irrigation strategies, and identify privileged direction of root development due to distinct RWU patterns. These results are corroborated also by seasonal monitoring of evapotranspiration (ET) and soil water content (SWC), which exhibit very large differences in the soil water distribution in space and time for the trees undergoing different irrigation schedules.

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“…It requires a fixed hardware scanner and software [7]. Which is not only used to research the relationship between roots and soils [8], plant roots and water-saving irrigation [9], plant nutrition and water absorption [10], but also research the effects of different soils on main and lateral roots. This study developed and tested an image processing system to measure the morphological parameters of apple seedling roots (surface area, average diameter, length, and volume) accurately.…”

Section: Discussionmentioning

confidence: 99%

Study on measurement method for apple root morphological parameters based on Labview

et al. 2019

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BackgroundTraditional measurements of apple seedling roots often rely on manual measurements and existing root scanners on the market. Manual measurement requires a lot of labor and time, and subjective reasons may cause the uncertainty of data; root scanners have limited scanning size and expensive. In case of fruit roots, coverage and occlusion issues will occur, resulting in inaccurate results, but our research solved this problem.ResultsThe background plate was selected according to the color of the seedling roots; the image of the roots of the collected apple seedlings was preprocessed with Vision Development Module by combining image and Labview. The root surface area, average root diameter, root length and root volume of apple seedlings were measured by combining root characteristic parameters algorithm. In order to verify the effectiveness of the proposed method, a set of measurement system for root morphology of apple seedlings was designed, and the measurement result was compared with the Canadian root system WinRHIZO 2016 (Canada). With application of SPSS v22.0 analysis, the significance P > 0.01 indicated that the difference was not significant. The relative error of surface area was less than 0.5%. The relative error of the average diameter and length of the root system was less than 0.1%, and the relative error of the root volume was less than 0.2%.ConclusionsIt not only proved that the root surface area, average root diameter, root length and root volume of apple seedlings could be accurately measured by the method described herein, which was handy in operation, but also reduced the cost by 80–90% compared with the conventional scanner.

show abstract

Soil water and root distribution of apple tree (Malus pumila Mill) stands in relation to stand age and rainwater collection and infiltration system (RWCI) in a hilly region of the Loess Plateau, China

Cited by 59 publications

References 41 publications

Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

Estimating the Root Water Uptake of Surface-Irrigated Apples Using Water Stable Isotopes and the Hydrus-1D Model

Assessing the extent of citrus trees root apparatus under deficit irrigation via multi-method geo-electrical imaging

Study on measurement method for apple root morphological parameters based on Labview

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