Effects of water quality, irrigation amount and nitrogen applied on soil salinity and cotton production under mulched drip irrigation in arid Northwest China

Che, Zheng; Wang, Jun; Li, Jiusheng

doi:10.1016/j.agwat.2021.106738

Cited by 48 publications

(23 citation statements)

References 30 publications

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“…The growth of halophytes also needs salt. Soil containing a certain amount of salt can not only provide nutrition for the growth of halophytes, but also significantly improve the growth ability of Suaeda salsa, this is consistent with Guo et al [46] The appropriate amount of soil salt can also improve soil water retention [47] . However, if excessive salinity exceeds the adjustable growth threshold of plants, plant death will also occur.…”

Section: Change Of Chlorophyll Content Under Different Salinity Gradientssupporting

confidence: 86%

Growth characteristics of Suaeda salsa under different soil salinity gradients in controlled experiments

Fei

Chen

Yuan

et al. 2021

International Journal of Agricultural and Biological Engineering

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Xinjiang is the province with the largest saline-alkali land in China. The growth of halophytes will be stressed when their salt content reaches the threshold. In this study, the pot experiments were conducted and Suaeda salsa, a typical halophyte, was selected as the object to explore the relationship between growth characteristics and salt content under different soil salinity gradients. Salinity gradients were set according to the maximum soil salinity in the current years of Ebinur Lake Wetland National Nature Reserve (ELWNNR). They were classified using the following threshold values: ≤2 g/kg (Control Group), 10 g/kg, 20 g/kg, 30 g/kg, and 40 g/kg. The original spectrum, trilateral position and growth characteristics were used as indexes for analysis. With the increase of soil salt content, the red edge shift occurs first, followed by the blue edge shift. The position of yellow edge, green peak and blue edge were not sensitive to the change of soil salinity. This indicates that the red edge is the best indicator for evaluating plant growth. Compared with the Control Group, when the salt content is less than 10 g/kg, the growth status of plant seems not significantly affected. However, plant growth begins to be stressed when the salt content increases to 20 g/kg, which is a turning point for plant health. The increase of soil salt content can inhibit chlorophyll synthesis and plant growth. Plants begin to die when the salt content reaches 40 g/kg. Therefore, 40 g/kg could be regarded as the critical point of salt content which inhibits plant growth. The study also shows that the relationship between plant-height change rate and soil salt content is the most significant, indicating that the plant-height change rate is significantly impacted by soil salt content.

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Section: Change Of Chlorophyll Content Under Different Salinity Gradientssupporting

confidence: 86%

Growth characteristics of Suaeda salsa under different soil salinity gradients in controlled experiments

Fei

Chen

Yuan

et al. 2021

International Journal of Agricultural and Biological Engineering

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“…The high sodium content for irrigated soils may be attributed to the study site's poor drainage and irrigation practices, as salts tend to accumulate in the topsoil over time. Several previous studies have also reported an increased salt accumulation with irrigation (Che et al, 2021;Makoi, 2016). High sodium levels have a dispersing impact in the soil leading to poor soil structure by dispersing soil colloids such as organic matter and clay (Awedat et al, 2021).…”

Section: Basic Cationsmentioning

confidence: 96%

“…It is therefore ideal for assessing the impact of irrigation on soil quality. However, despite the varying nature of the impact of irrigation, most studies only assess impacts of water quality on soil properties (Abd-Elwahed, 2018, 2019Alrajhi et al, 2017;Ayoub et al, 2016;Bastida et al, 2017;Che et al, 2021;Ganjegunte et al, 2017;Eid et al, 2021). Other studies assessed the variation of soil properties between irrigated and rain-fed (Makoi, 2016), ORIGINAL RESEARCH ARTICLE while others compare impacts across time intervals (Shang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Impact of irrigated and non-irrigated cropping systems on soil physicochemical properties in a small-scale irrigation farming system in Eastern Uganda

Kaduyu

Mazellier

2021

Arch. Agric. Environ. Sci.

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This study evaluated the impact of irrigation and cropping on soil physicochemical properties at Kyekide small scale irrigation farm in Jinja district, eastern Uganda. Treatments included Land-use systems under perennial and annual cropping with and without irrigation for over 20 years. The hypothesis was that there were insignificant differences in physicochemical properties of the soil under irrigated and non-irrigated cropping systems. Soil physical properties except hydraulic conductivity was not significantly different with irrigation and cropping. The pH of the soils ranged from moderately acidic to neutral pH (5.17-7.40), with irrigated soils tending to be more neutral than non-irrigated soils. SOM content was higher in the irrigated soils and perennial soils than in the non-irrigated and annual soils. The soils were moderately deficient in N and severely deficient in P (mean values =0.175% N and 1.183mg kg-1 P) compared with the critical of 0.2% and 15 mg kg-1, respectively. Irrigated soils had a significantly higher Na+ content than non-irrigated soils, with a mean value of 2.985cmol/kg. The K+, Ca2+, and Mg2+ contents were higher in irrigated and perennial soils than non-irrigated and annual soils. The study suggested monitoring the soils under an irrigation scheme to prevent degradation due to increased salt accumulation or chemical fertility decline. Overall, monitoring of soil quality is vital in irrigation schemes to monitor the impacts of water on the environment.

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“…Soils contain the nutrients, or elements, that are essential for human and plant life functions. Thus, soil has a very strong link to human health [e.g., (3,4)], agriculture-based economies (5,6), food security (7,8), and air and water quality (9). Furthermore, the health of soil is a pivotal global FIGURE 1 | There are direct and indirect as well as positive and negative relationships between soil and human health.…”

Section: Introductionmentioning

confidence: 99%

Soils, Biofortification, and Human Health Under COVID-19: Challenges and Opportunities

et al. 2021

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Soil is an important source of resources required for human health and well-being. Soil is also a major environmental reservoir of pathogenic organisms. This may include viruses like the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), which through 2020 and 2021 created dramatic catastrophes worldwide as the causative agent of the coronavirus disease of 2019 (COVID-19). So, soil has both positive and negative impacts on human health. One of the major positive impacts is the transfer of nutrients from soil to plants, and from there to humans through their diet. Biofortification is able to enhance the levels of nutrients essential to human health in the crops we consume and represents a sustainable solution to address malnutrition, which in turn may strengthen the human immune system against COVID-19. This nutrient transfer works better when we have healthy soils. Therefore, soils and biofortification have important roles to play in combatting the COVID-19 pandemic. However, several questions still remain, such as what are the expected environmental impacts of COVID-19 on soil? Can SARS-CoV-2 be transmitted through soil, and under what conditions? Which soil processes and properties influence SARS-CoV-2 survival rates and times, as well as transmission? What are the specific links between soil health and COVID-19? What are the projected soil management scenarios in response to COVID-19? Questions such as these deserve more attention as the world seeks to recover from its most recent pandemic.

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Effects of water quality, irrigation amount and nitrogen applied on soil salinity and cotton production under mulched drip irrigation in arid Northwest China

Cited by 48 publications

References 30 publications

Growth characteristics of Suaeda salsa under different soil salinity gradients in controlled experiments

Growth characteristics of Suaeda salsa under different soil salinity gradients in controlled experiments

Impact of irrigated and non-irrigated cropping systems on soil physicochemical properties in a small-scale irrigation farming system in Eastern Uganda

Soils, Biofortification, and Human Health Under COVID-19: Challenges and Opportunities

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