A Systematic Review of the Potential of a Dynamic Hydrogel as a Substrate for Sustainable Agriculture

Sahmat, Siti Sahmsiah; Rafii, Mohd Y.; Oladosu, Yusuff; Jusoh, Mashitah; Hakiman, Mansor; Mohidin, Hasmah

doi:10.3390/horticulturae8111026

Cited by 10 publications

(3 citation statements)

References 97 publications

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“…. Hydrogel Some research indicates that the banding of polymer in the furrow could reduce the total nutrient requirements for a particular crop, as the superabsorbent polymers tend to increase the reserve pool of nutrients in the rhizosphere soil and increase the uptake efficiency of the nutrient elements in the plant [23,24]. Available Sulfur content (mg kg -1…”

Section: Resultsmentioning

confidence: 99%

Effects of Hydrogel on Physical and Chemical Properties of Soil

Patel

Shah²,

Latare

2023

IJPSS

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This experiment was performed at the Rajiv Gandhi South Campus, Barkachha (BHU) Mirzapur, as a pot culture study, from November 2018 to March 2019–20. This experiment is a completely randomised design, taking three replications with six treatments, i.e., T1: Control, T2: 5 g kg-1 Hydrogel, T3: 10 g kg-1 Hydrogel, T4: 15 g kg-1 Hydrogel, T5: 20 g kg-1 Hydrogel, and T6: 25 g kg-1 Hydrogel. The soil was incubated with different doses of hydrogel for 120 days. The samples were collected after incubation, processed in a laboratory, and analysed for physical and chemical properties of soil. The results demonstrated that the use of hydrogel had a significant impact on the various soil properties, particularly the water holding capacity and bulk density of the soil. Other soil properties that were significantly influenced were particle density, porosity, electrical conductivity, soil available nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. However, the application of hydrogel did not influence the pH of soil or the organic carbon content of soil. The application of hydrogel at a rate of 25 g kg1 showed the highest values of available N, P, K, and S content in soil as well as the water holding capacity. In some soil properties, the treatment containing 25 g kg-1 hydrogel was found to be statistically equivalent to that containing 20 g kg-1 hydrogel.

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Section: Resultsmentioning

confidence: 99%

Effects of Hydrogel on Physical and Chemical Properties of Soil

Patel

Shah²,

Latare

2023

IJPSS

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“…The GG‐based hydrogel application in nearly all test crops (vegetables, oilseeds, great millets, wheat, etc.) has led to a significant improvement in the quality of agricultural produce in terms of plant height and enhancement in yield, according to the findings of field trials and feedback obtained through interactions with other farmers (Palanivelu et al., 2022; Sahmat et al., 2022). Additionally, it has led to a reduction in fertilizer dosage, up to 20% decrease in irrigation frequency (which reduces the labor‐intensiveness of frequent irrigations; Ahmed, 2015), an improvement in the hydro physical environment of the soil, and the B/C ratio.…”

Section: Discussionmentioning

confidence: 99%

Impact of guar gum‐based hydrogel on yield and economics for sugarcane crops

Songara

Patel

2023

Agronomy Journal

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According to the current scenario, water crises are booming at a higher rate globally, affecting different demands such as agricultural, domestic, industrial, and so forth. Ultimately, such a water crisis may affect food safety. We have developed guar gum (GG)‐based hydrogel to help solve this issue with a water‐saving objective. This paper presents the application performance of newly developed GG‐based hydrogel on sugarcane crop growth, yield, and its economics. The crop water requirement and irrigation scheduling are also obtained using the CROPWAT model. Comparing different irrigation practices indicates that six irrigations can be saved by applying the CROPWAT optimization model, and up to three irrigations can be saved by applying different dosages of GG‐based hydrogel against the conventional method. Moreover, a set dosage application of 2.5 and 5 kg ha−1 of GG‐based hydrogel has elevated the cane height up to 8.67% and 10.02%, respectively. Furthermore, a considerable increment of 5.5% and 8% was found in the crop yield. In addition, the average soil moisture was found to be 10.50% and 17% higher over the field without hydrogel by using an indigenously developed Internet of Things–based SS316L soil moisture sensor. Applying GG‐based hydrogel (2.5 and 5 kg ha−1) saves the number of irrigations by two and three times, respectively. When it comes to the economy, the benefit–cost ratio for 2.5 and 5 kg ha−1 hydrogel dosages was found to be 2.64 and 2.09, respectively. Thus, GG‐based hydrogel shows substantial promise as a useful agricultural product for water‐saving purposes.

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“…Their proven properties make them promising candidates for combining with nitrogenous fertilizers, thereby reducing irrigation needs, adverse environmental effects, and fertilizer loss while facilitating the gradual release of nitrogen [25,26]. Recently, super-absorbent hydrogels and synthetic hydrogels have shown significant promise in the market, whereas natural hydrogels have drawn more attention because of their availability, environmental safety, and cost-effectiveness [27,28]. Among these natural hydrogels, chitosan- [29], starch- [3], cellulose- [30], gelatin- [31], and algae-based hydrogels including alginate [32], carrageenan [33], agar [34] and agarose [35] have attracted great research interest towards slow-release fertilizer applications.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Potential of 3D-Printable Agar–Urea Hydrogels as an Efficient Method of Delivering Nitrogen in Agricultural Applications

Dissanayake,

Najaf Zadeh,

Nazmi

et al. 2024

Polysaccharides

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Amidst population growth and challenges with existing fertilizers, the development of smart and environmentally friendly agrochemicals is imperative. While 3D printing is widespread, its potential in slow-release agrochemicals remains unexplored. This proof-of-concept study employed solvent casting and 3D printing to develop agar–urea structures. These structures, comprising 2.5% (w/w) agar, incorporated either 7% (w/w) or 13% (w/w) urea as nitrogen nutrients. Rheological, mechanical, and morphological properties and sorption capabilities were explored. Rheological analysis revealed a substantial impact of urea, enhancing material resistance to deformation. In mechanical tests, inclusion of urea showed no significant impact on compressive strength. SEM analysis confirmed the successful entrapment of urea within the agar matrix. The inclusion of urea resulted in a diminished water sorption capacity, attributed to the urea–water interactions disrupting the hydrogen bonding ability of agar. Agar–urea inks were employed in 3D printing utilizing the direct-ink writing technique, and the nitrogen release behavior was investigated. Results revealed nearly complete urea release in the positive control within 48 h. In contrast, agar–urea formulations with 7% (w/w) and 13% (w/w) achieved nitrogen release rates of 88.8% and 94.4%, respectively, suggesting potential for 3D-printed agar formulations to modify the immediate release behavior seen in conventional urea fertilizers.

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A Systematic Review of the Potential of a Dynamic Hydrogel as a Substrate for Sustainable Agriculture

Cited by 10 publications

References 97 publications

Effects of Hydrogel on Physical and Chemical Properties of Soil

Effects of Hydrogel on Physical and Chemical Properties of Soil

Impact of guar gum‐based hydrogel on yield and economics for sugarcane crops

Exploring the Potential of 3D-Printable Agar–Urea Hydrogels as an Efficient Method of Delivering Nitrogen in Agricultural Applications

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