Quantifying the interactive effect of water absorbing polymer (WAP)-soil texture on plant available water content and irrigation frequency

Saha, Abhisekh; Rattan, Bharat; Sreedeep, S.; Manna, Uttam

doi:10.1016/j.geoderma.2020.114310

Cited by 41 publications

(23 citation statements)

References 55 publications

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“…The WAC of synthesized FAWA remained constant (= 310 g/g) for the amount of water ranging between 30 and 60 mL. It can be noted that the WAC of the synthesized FAWA is comparable with the WAC of other laboratory grade and commercial grade SAH 42 – 48 (Table 2 ).…”

Section: Resultsmentioning

confidence: 59%

“…The higher improvement of w max value for coarse-textured soil (FS) can be attributed to a relatively larger size of soil pore diameter as compared to fine-textured soil (SL, CL). Due to this reason, the FAWA can easily swell to its maximum swelling capacity in coarse-textured soils 48 . On the other hand, the swelling of the FAWA is restricted by the surrounding soil particle in fine-textured soil.…”

Section: Resultsmentioning

confidence: 99%

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Transformation of non-water sorbing fly ash to a water sorbing material for drought management

Saha

Sreedeep

Manna

et al. 2020

Sci Rep

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Securing water in the soil through suitable amendments is one of the methods for drought management in arid regions. In this study, a poor water sorbing fly ash was transformed into a high water-absorbing material for improving soil water retention during the drought period. The fly ash water absorbent (FAWA) exhibited high water-absorbing capacity (WAC) of 310 g/g at par with commercially available superabsorbent hydrogel (SAH). The FAWA showed excellent re-swelling behavior for more than eight alternate wetting–drying cycles. The WAC of FAWA was sensitive to salt type, pH, and ionic strength of the solution. At maximum salinity level permitted for plant growth, the WAC of FAWA was 80 g/g indicating its suitability for drought management. There was only a marginal WAC variation in the range of pH (5.5–7.5) considered most suitable for plant growth. The drying characteristics of FAWA amended soil exhibited an increase in desaturation time by 3.3, 2.2, and 1.5 times for fine sand, silt loam, and clay loam, respectively. The study demonstrates the success of using a low rate of FAWA for drought management with the advantage of offering a non-toxic and eco-friendly solution to mass utilization of industrial solid waste for agricultural applications.

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Section: Resultsmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 99%

Transformation of non-water sorbing fly ash to a water sorbing material for drought management

Saha

Sreedeep

Manna

et al. 2020

Sci Rep

Self Cite

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“…Additionally, literature provides examples of cases when a lower share of SAP in the mixture led to higher efficiency of its application [ 46 , 47 , 48 ]. Lower doses of SAP (0.30%, 0.50%) will be more adequate for practical applications in environmental engineering and agriculture due to their lower influence on the top layer of soil and higher AUL values [ 35 , 49 ]. Both problems may be solved by using a technology that will allow for free water absorption by SAP in spite of the soil load and that will eliminate the problems resulting from mixing SAPs directly with soil [ 50 , 51 , 52 ].…”

Section: Discussionmentioning

confidence: 99%

The Characteristics of Swelling Pressure for Superabsorbent Polymer and Soil Mixtures

et al. 2020

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Superabsorbent polymers (SAPs) are used in agriculture and environmental engineering to increase soil water retention. Under such conditions, the swelling pressure of the SAP in soil affects water absorption by SAP, and soil structure. The paper presents the results of swelling pressure of three cross-linked copolymers of acrylamide and potassium acrylate mixed at the ratios of 0.3%, 0.5% and 1.0% with coarse sand and loamy sand. The highest values of swelling pressure were obtained for the 1% proportion, for coarse sand (79.53 kPa) and loamy sand (78.23 kPa). The time required to reach 90% of swelling pressure for each type of SAP differs. Samples of coarse sand mixed with SAP K2 in all concentrations reached 90% of total swelling pressure in 100 min, while the loamy sand mixtures needed only about 60 min. The results were the basis for developing a model for swelling pressure of the superabsorbent and soil mixtures, which is a fully stochastic model. The conducted research demonstrated that the course of pressure increase depends on the available pore capacity and the grain size distribution of SAPs. The obtained results and the proposed model may be applied everywhere where mixtures of SAPs and soils are used to improve plant vegetation conditions.

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“…AWANASD is inspired by the clay pot irrigation method that we conferred autonomous water filling and emptying with a constant flow continuously diffused. AWANASD may avoid multiple problems encountered and created by traditional methods of irrigation such as: risk of soil salinization; use of poor‐quality irrigation water (Singh, 2016); improper management of water resources (Saha et al ., 2020); loss of water by evaporation and deep percolation (Maghchiche et al ., 2010); irrigation water consumption (Olad et al ., 2018). Precision irrigation is essential in arid and semi‐arid areas with limited water supplies (Díaz and Grattan, 2009).…”

Section: Introductionmentioning

confidence: 99%

Autonomous water and nutritional anti‐stress device to solve a plant irrigation problem based on harvested rainwater: A Tunisian case study*

Medhioub¹,

Euchi

Makhloufi³

2021

Irrigation and Drainage

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Water consumption has increased significantly around the world in recent years, whereas existing water resources are becoming rarer. Even in tropical areas, where the rains offer an average of 2600 mm of water yearly, the soil water source can reduce gradually throughout the dry season and limit the growth of vegetation. Different irrigation methods have been developed to meet plants’ water needs for productivity. These methods depend closely on mobilization of the water source and its permanent control. In this paper, we have proposed an autonomous water and nutritional anti‐stress device for plants based on the recovery of rainwater. It is a new concept inspired by irrigation in antique clay pots. It is designed to ensure regular cyclical storage and transfer to the plant of an almost constant daily flow of mobilized rainwater. These waters are also enriched with nutrients during their journey to the plant. This delayed water storage and transfer process will compensate for the lack of water necessary for the survival of the plant in dry periods. The device was tested in a reduced environment and has given good results in decreasing water stress and increasing the level of nutrition for plants.

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Quantifying the interactive effect of water absorbing polymer (WAP)-soil texture on plant available water content and irrigation frequency

Cited by 41 publications

References 55 publications

Transformation of non-water sorbing fly ash to a water sorbing material for drought management

Transformation of non-water sorbing fly ash to a water sorbing material for drought management

The Characteristics of Swelling Pressure for Superabsorbent Polymer and Soil Mixtures

Autonomous water and nutritional anti‐stress device to solve a plant irrigation problem based on harvested rainwater: A Tunisian case study*

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