Saline Agriculture in the 21st Century: Using Salt Contaminated Resources to Cope Food Requirements

Ladeiro, Bruno

doi:10.1155/2012/310705

Cited by 116 publications

(62 citation statements)

References 48 publications

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“…But with increase in soil salinity and scarcity of good quality of water, there is a need to find salt‐tolerant crop that can be irrigated with saline and brackish water. This issue gave rise to concept of “Biosaline Agriculture” which, was defined as “Profitable and improved agricultural practices using saline land and saline irrigation water with the purpose to achieve better production through a sustainable and integrated use of genetic resources (plants, animals, fish, insects, and microorganisms) avoiding expensive soil recovery measures.” Ladeiro () has refined it as “An innovative strategy for enhancing land and water availability is the use of salted soils and salted water, in a strategy designated as saline agriculture.” In biosaline agriculture, three goals can be achieved simultaneously: first, utilization of saline and degraded soil; second, use of waste water in agriculture, which will save fresh water for drinking purpose; third, isolation of value added products (Figure ). For successful biosaline application, screening of highly salt‐tolerant and productive halophyte are of prime importance.…”

Section: Halophyte Cultivation and Its Potential Applicationsmentioning

confidence: 99%

Halophytes in biosaline agriculture: Mechanism, utilization, and value addition

Srivastava²,

et al. 2017

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Land is considered as the life‐sustaining platform for food and water. However, there are contaminants such as salt, heavy metal, and industrial waste that decrease land fertility, posing serious threat to sustainable agriculture. In recent years, novel crop varieties with improved tolerance against environmental contaminants have been developed, but most of them face severe yield penalty. Alternatively, naturally tolerant plants such as extremophiles can be screened for their potential as crops. These crops should be tolerant to various abiotic stresses, perform better under extreme conditions and produce higher biomass and yield. In view of this, the present review focuses on the effects of saline soil on plants and how a class of plants termed as “halophytes” can tolerate high levels of salt. The potential applications of halophytes in phytoremediation, desalination, secondary metabolite production, medicine, food, and saline agriculture have been discussed. A concept of saline agriculture has been proposed for rehabilitation of saline and degraded lands. In this context, a potential halophyte is cultivated in salt‐contaminated soil for desalination. The harvested halophyte can have industrial value, and later on, rehabilitated soil can be utilized for agriculture purpose. Some success with halophyte cultivation has been demonstrated in environmentally degraded soils, and it is imperative that large‐scale adoption of halophytes, as potential candidates, can be accorded top priority for rehabilitating contaminated soils, which can pave way for sustainable agriculture.

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Section: Halophyte Cultivation and Its Potential Applicationsmentioning

confidence: 99%

Halophytes in biosaline agriculture: Mechanism, utilization, and value addition

Srivastava²,

et al. 2017

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“…It is estimated that the global human population will grow to 8 billion in 2025 (Ladeiro, ), whereas arable land continues to decrease due to urbanization. Increasing soil salinity and sodicity problems, as well as global climate change, are also contributing to the degradation of arable land.…”

Section: Introductionmentioning

confidence: 99%

Grass and maize vegetation systems restore saline‐sodic soils in the Songnen Plain of northeast China

et al. 2018

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Establishment of an appropriate vegetation system for reclamation of saline‐sodic soils requires studies for specific salt‐affected region(s). The phytoremediation of saline‐sodic soils has not been well documented in the Songnen Plain of northeast China. Thus, in this study, we aimed to investigate the effects of grass (G) and maize (Zea mays L.; M) vegetation systems, which were established for 5 years, on soil properties of 10 typical saline‐sodic sampling sites across the Songnen Plain, in comparison with respective nonvegetated areas that were used as controls (CK) for the evaluation of variability among the sampling sites. Physicochemical properties, such as soil moisture, bulk density, porosity, saturated hydraulic conductivity, aggregate stability, pH, electric conductivity, total salt, organic C, total N, and C/N ratio, were analyzed. G and M vegetation significantly produced a 108% and 153% improvement in soil quality, respectively. Additionally, metagenomic analysis of the soil bacterial community revealed that vegetation enhanced the ability of the bacteria to survive in saline‐sodic soils, relative to the control. The composition of the bacterial community was highly correlated with all of the soil physicochemical properties. G vegetation had better effects than M vegetation in enhancing soil organic C, total N and aggregate stability, whereas M vegetation more favorably adjusted soil pH, physical structure, and bacterial community than G vegetation did. Collectively, these findings demonstrate that M vegetation has a greater impact than G vegetation on repairing saline‐sodic soils in the Songnen Plain of northeast China.

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“…In order to counteract the detrimental effects of salinity on conventional crops, intensive research has been conducted, worldwide, to increase salt tolerance using genetic manipulation (Flowers, 2004), but the outcomes remain not significant so far (Läuchli and Grattan, 2007). An alternative approach is studied to utilize the natural salt-tolerance halophytes for sustainable crop production, particularly for economic interests (food, fodder and fuel) or ecological reasons (soil desalinization, phytoremidation, dune fixation, CO 2-sequestration) (Ashour et al, 1997;Leith and Mochtschenko, 2002;Reddy et al, 2008;Eid and Eisa, 2010;Koyro et al, 2011;Ladeiro, 2012;Hussin et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Chenopodium quinoa Willd. A new cash crop halophyte for saline regions of Egypt

Eisa¹,

Eid²,

El-Samad³

et al. 2017

Aust J Crop Sci

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A prerequisite for sustainable saline agriculture of cash crop halophytes in salt affected areas implies exact knowledge of their limits of salinity resistance. Hence, the first part of this study was carried out in pot experiment under greenhouse conditions to evaluate growth and seed yield of C. quinoa Willd. cv. Hualhuas to varying water salinity levels (0, 100, 200, 300, 400 and 500 mM NaCl). The limit of salinity resistance was estimated at 200 mM NaCl (~20 dSm -1 ) based on seed yield production. Depending on the results obtained from pot experiment, field trials were conducted in saline soil location (ECe 17.9 dSm -1 ) and in non-saline soil location (ECe 1.9 dSm -1 ). Seed yield significantly decreased under saline soil by about 61.7% . Beside quantity, soil salinity led to reduce the percentage of moisture, total carbohydrate and total fat contents in seeds. Salinity did not significantly alter the protein content in quinoa seeds. Significant increases in the content of ash and fiber were detected in response to high soil salinity. The high er ash content in seeds under saline conditions was due to the increase of Na + as well as K + , P 3-and Fe ++ concentrations. By contrast, soil salinity led to significant decrease of Ca ++ and Zn ++ contents in seed. Energy dispersive X-ray microanalysis showed that most of Na + in the seeds produced at saline soil was mainly accumulated in the pericarp followed by embryo tissues, while, the interior reserving tissue (perisperm) exhibiting comparatively low concentration. Increasing most of essential minerals, especially Fe, in quino a seeds produced under high saline conditions given quinoa a distinctive value for human consumption. Quinoa can be grown and yielded successfully in salt-affected soils (ECe 17.9 dSm -1 ), where, most if not all of traditional crops cannot grow, although the yield was reduced however, the seed quality was not highly affected.

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Saline Agriculture in the 21st Century: Using Salt Contaminated Resources to Cope Food Requirements

Cited by 116 publications

References 48 publications

Halophytes in biosaline agriculture: Mechanism, utilization, and value addition

Halophytes in biosaline agriculture: Mechanism, utilization, and value addition

Grass and maize vegetation systems restore saline‐sodic soils in the Songnen Plain of northeast China

Chenopodium quinoa Willd. A new cash crop halophyte for saline regions of Egypt

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