Potential risk assessment of soil salinity to agroecosystem sustainability: Current status and management strategies

Sahab, Sinha; Suhani, Ibha; Srivastava, Vaibhav; Chauhan, Puneet Singh; Singh, Rajeev Pratap; Prasad, Vishal

doi:10.1016/j.scitotenv.2020.144164

Cited by 182 publications

(95 citation statements)

References 96 publications

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“…up to 1.6 dS m −1 . Any further increase in soil salinity significantly reduces the yield, recording a 50% yield reduction when the soil salinity level reaches 5 dS m −1 [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Foliar-Applied Potassium Silicate Coupled with Plant Growth-Promoting Rhizobacteria Improves Growth, Physiology, Nutrient Uptake and Productivity of Faba Bean (Vicia faba L.) Irrigated with Saline Water in Salt-Affected Soil

Hafez

Osman

El-Razek

et al. 2021

Plants

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The continuity of traditional planting systems in the last few decades has encountered its most significant challenge in the harsh changes in the global climate, leading to frustration in the plant growth and productivity, especially in the arid and semi-arid regions cultivated with moderate or sensitive crops to abiotic stresses. Faba bean, like most legume crops, is considered a moderately sensitive crop to saline soil and/or saline water. In this connection, a field experiment was conducted during the successive winter seasons 2018/2019 and 2019/2020 in a salt-affected soil to explore the combined effects of plant growth-promoting rhizobacteria (PGPR) and potassium (K) silicate on maintaining the soil quality, performance, and productivity of faba bean plants irrigated with either fresh water or saline water. Our findings indicated that the coupled use of PGPR and K silicate under the saline water irrigation treatment had the capability to reduce the levels of exchangeable sodium percentage (ESP) in the soil and to promote the activity of some soil enzymes (urease and dehydrogenase), which recorded nearly non-significant differences compared with fresh water (control) treatment, leading to reinstating the soil quality. Consequently, under salinity stress, the combined application motivated the faba bean vegetative growth, e.g., root length and nodulation, which reinstated the K+/Na+ ions homeostasis, leading to the lessening or equalizing of the activity level of enzymatic antioxidants (CAT, POD, and SOD) compared with the controls of both saline water and fresh water treatments, respectively. Although the irrigation with saline water significantly increased the osmolytes concentration (free amino acids and proline) in faba bean plants compared with fresh water treatment, application of PGPR or K-silicate notably reduced the osmolyte levels below the control treatment, either under stress or non-stress conditions. On the contrary, the concentrations of soluble assimilates (total soluble proteins and total soluble sugars) recorded pronounced increases under tested treatments, which enriched the plant growth, the nutrients (N, P, and K) uptake and translocation to the sink organs, which lastly improved the yield attributes (number of pods plant−1, number of seeds pod−1, 100-seed weight). It was concluded that the combined application of PGPR and K-silicate is considered a profitable strategy that is able to alleviate the harmful impact of salt stress alongside increasing plant growth and productivity.

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“…up to 1.6 dS m −1 . Any further increase in soil salinity significantly reduces the yield, recording a 50% yield reduction when the soil salinity level reaches 5 dS m −1 [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Foliar-Applied Potassium Silicate Coupled with Plant Growth-Promoting Rhizobacteria Improves Growth, Physiology, Nutrient Uptake and Productivity of Faba Bean (Vicia faba L.) Irrigated with Saline Water in Salt-Affected Soil

Hafez

Osman

El-Razek

et al. 2021

Plants

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“…A future hybridization of this method with numerical models could allow for consideration of a wider number of scenarios and performance of sensitivity analyses on important forcing conditions [54], such as (i) climate change, (ii) increasing groundwater overexploitation, (iii) sea-level rise and (iv) severe drought conditions. Finally, a holistic assessment could also be generated accounting for soil salinization risk, which represents an important issue for agricultural areas [55]. Thus, the methodology applied represents an easy and reliable tool for screening vulnerability to SI, especially for studies at the watershed rather than plot scale, for which necessary data for a numerical model application are often missing.…”

Section: Actual and Future Seawater Intrusion Comparisonmentioning

confidence: 99%

Actual and Forecasted Vulnerability Assessment to Seawater Intrusion via GALDIT-SUSI in the Volturno River Mouth (Italy)

et al. 2021

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Coastal areas have become increasingly vulnerable to groundwater salinization, especially in the last century, due to the combined effects of climate change and growing anthropization. In this study, a novel methodology named GALDIT-SUSI was applied in the floodplain of the Volturno River mouth for the current (2018) and future (2050) evaluation of seawater intrusion accounting for the expected subsidence and groundwater salinization rates. Several input variables such as digital surface model, land use classification, subsidence rate and drainage system have been mapped via remote sensing resources. The current assessment highlights how areas affected by salinization coincide with the semiperennial lagoons and inland depressed areas where paleosaline groundwaters are present. The future assessment (2050) shows a marked increase of salinization vulnerability in the coastal strip and in the most depressed areas. The results highlight that the main vulnerability driver is the Revelle index, while predicted subsidence and recharge rates will only slightly affect groundwater salinization. This case study indicates that GALDIT-SUSI is a reliable and easy-to-use tool for the assessment of groundwater salinization in many coastal regions of the world.

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“…Soil salinization is an agriculturally critical subject and has endangered targets of sustainable development linked to nutrition, food security, and resource conservation. Physio-chemical characteristics of soil, in addition to plant metabolism, are subjected to the deleterious effect of the increasing levels of salinity-stress [10]. Salinity problem significantly affects broad bean productivity, lipids content, proteins, nucleic acids and inhibits enzyme activities of carbon and nitrogen metabolism [11].…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, salinity has a negative influence on the abundance and distribution of soil-dwelling microorganisms. Nowadays, conventional approaches do not fit well with the research trials to control the salinity issue [10]. Traditional management techniques of agroecosystems mainly rely on adding nutrients and water to fill the gap of nutrient deficiencies, but not to remove the accumulated salts.…”

Section: Introductionmentioning

confidence: 99%

“…This exacerbates soil problems caused by fertilizer-induced salinization [12]. Therefore, modern salinity management techniques such as vermicomposting are mostly promoted [10]. It is pertinent that organic amendments are able to ameliorate salt affected soils by improving their physical, chemical, and biological conditions for beneficent soil health, boosting crop production [13].…”

Section: Introductionmentioning

confidence: 99%

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Positive Salt Tolerance Modulation via Vermicompost Regulation of SOS1 Gene Expression and Antioxidant Homeostasis in Viciafaba Plant

El-Dakak

El-Aggan

Badr

et al. 2021

Plants

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Strategic implementation of vermicompost as safe biofertilizer besides defensing saline soils offer dual function solving problems in developing countries. The current study aims to utilize vermicompost (VC) for amelioration of 200mM NaCl in Vicia faba Aspani cultivar and investigate the molecular role of salt overly sensitive pathway (SOS1). The experiment was conducted following a completely randomized design with three replicates. Treatments include 0; 2.5; 5; 10; 15% dried VC intermingled with soil mixture (clay: sand; 1:2) and/or 200 mM NaCl. The results show that salinity stress decreased broad bean fresh and dry weight; and K+/Na+. However, malonedialdehyde and H2O2 contents; increased. Application of 10% VC and salinity stress increases Ca2+ (41% and 50%), K+/Na+ (125% and 89%), Mg2+ (25% and 36%), N (8% and 11%), indole acetic acid (70% and 152%) and proteins (9% and 13%) for root and shoot, respectively, in comparison to salt treated pots. Moreover, all examined enzymatic antioxidants and their substrates increased, except glutathione reductase. A parallel decrease in abscisic acid (75% and 29%) and proline (59% and 58%) was also recorded for roots and leaves, respectively. Interestingly, the highly significant increase in gene expression of SOS1 (45-fold) could drive defense machinery of broad bean to counteract 200 mM NaCl.

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Potential risk assessment of soil salinity to agroecosystem sustainability: Current status and management strategies

Cited by 182 publications

References 96 publications

Foliar-Applied Potassium Silicate Coupled with Plant Growth-Promoting Rhizobacteria Improves Growth, Physiology, Nutrient Uptake and Productivity of Faba Bean (Vicia faba L.) Irrigated with Saline Water in Salt-Affected Soil

Foliar-Applied Potassium Silicate Coupled with Plant Growth-Promoting Rhizobacteria Improves Growth, Physiology, Nutrient Uptake and Productivity of Faba Bean (Vicia faba L.) Irrigated with Saline Water in Salt-Affected Soil

Actual and Forecasted Vulnerability Assessment to Seawater Intrusion via GALDIT-SUSI in the Volturno River Mouth (Italy)

Positive Salt Tolerance Modulation via Vermicompost Regulation of SOS1 Gene Expression and Antioxidant Homeostasis in Viciafaba Plant

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