Crosslinked CMC-urea hydrogel made from natural carboxymethyl cellulose (CMC) as slow-release fertilizer coating

Suprabawati, Anggi; Aisyah, Lies; Firzatullah, M. R.

doi:10.1063/5.0002056

Cited by 8 publications

(5 citation statements)

References 7 publications

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“…all of which have been investigated at different levels and could be promising for agricultural applications. [97][98][99][100] A study that utilised a CMC/ALG (1:1) hydrogel was able to achieve a sustained release capacity of 50% for NPK in water after 30 days, under neutral and slightly basic conditions. 101 Davidson et al ( 2013) conducted a study on CMC as a root-targeted delivery vehicle for fertiliser.…”

Section: Fertiliser Encapsulationmentioning

confidence: 99%

Application of superabsorbent natural polymers in agriculture

Dingley,

Cass,

Adhikari

et al. 2024

Polymers from Renewable Resources

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To meet global food demand, reduce waste, and minimise environmental impact, the agricultural sector must improve its current practices on soil amendment, fertiliser encapsulation, and seed and crop protection. Super absorbent polymers (SAPs) are a class of polymeric materials that can absorb and retain large quantities of liquids/aqueous solutions compared to their own mass. Typically, SAPs are cross-linked to form three-dimensional hydrophilic networks, commonly known as hydrogels. Although SAPs can be synthesised from both synthetic and naturally sourced materials, for agricultural applications they are generally composed of synthetic polymers, due to their advantageous properties. These include higher water absorption rate and capacity, low cost, availability, durability, and mechanical performance. However, many of these systems utilise polyacrylic acid (PAA) and polyacrylamide (PAM) monomers which may have toxic effects on the nervous and respiratory systems of humans and animals. To ensure sustainable agricultural practices and maintain healthy long-term crop output, synthetic SAP usage must be greatly reduced. This review article aims to investigate alternative natural SAPs for agriculture and critically rationalise their adoption into the industry. Specific applications investigated include (i) soil amendment, (ii) fertiliser encapsulation, (iii) seed coating, and (iv) crop protection.

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Section: Fertiliser Encapsulationmentioning

confidence: 99%

Application of superabsorbent natural polymers in agriculture

Dingley,

Cass,

Adhikari

et al. 2024

Polymers from Renewable Resources

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“…The utilization of biodegradable hydrogels, incorporating a diverse range of non-toxic cellulose-based materials, such as cellulose derivatives, sawdust cellulose, rice ash, wheat straw, pineapple peel, and oil palm empty fruit bunch, has emerged as a promising avenue in urban farming applications [ 15 , 98 , 99 , 100 ].…”

Section: Effects Of Polymer Hydrogels On Growing Mediamentioning

confidence: 99%

Agriculture 4.0: Polymer Hydrogels as Delivery Agents of Active Ingredients

Mikhailidi,

Ungureanu,

Tofanica

et al. 2024

Gels

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The evolution from conventional to modern agricultural practices, characterized by Agriculture 4.0 principles such as the application of innovative materials, smart water, and nutrition management, addresses the present-day challenges of food supply. In this context, polymer hydrogels have become a promising material for enhancing agricultural productivity due to their ability to retain and then release water, which can help alleviate the need for frequent irrigation in dryland environments. Furthermore, the controlled release of fertilizers by the hydrogels decreases chemical overdosing risks and the environmental impact associated with the use of agrochemicals. The potential of polymer hydrogels in sustainable agriculture and farming and their impact on soil quality is revealed by their ability to deliver nutritional and protective active ingredients. Thus, the impact of hydrogels on plant growth, development, and yield was discussed. The question of which hydrogels are more suitable for agriculture—natural or synthetic—is debatable, as both have their merits and drawbacks. An analysis of polymer hydrogel life cycles in terms of their initial material has shown the advantage of bio-based hydrogels, such as cellulose, lignin, starch, alginate, chitosan, and their derivatives and hybrids, aligning with sustainable practices and reducing dependence on non-renewable resources.

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“…Currently, biodegradable hydrogels have become an exciting field of study in urban farming applications. This is due to the flexibility they offer, through mixing different types of non-toxic cellulose-based materials, such as cellulose derivatives, sawdust cellulose, rice ash, wheat straw, pineapple peel, and oil palm empty fruit bunch, as the precursors in making the hydrogel [45,[64][65][66].…”

Section: Hydrogel As a Potting Mediummentioning

confidence: 99%

Hydrogel Application in Urban Farming: Potentials and Limitations—A Review

et al. 2022

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Urban agriculture plays a vital role in ensuring the self-sufficiency of a great variety of fresh vegetables and nutrients. It promotes a sustainable food system as well as reducing the dependency on imports for the growing population. Urban farming has made it possible for agriculture practices to be implemented anywhere at any time in a sophisticated way. Hydrogel has been introduced in urban agriculture in the past few decades. However, the application of hydrogel in urban agriculture is still being explored in terms of hydrogel types, structure, physical and chemical properties, change due to external factors, and its suitability for different plant species. This review discusses the potentials and limitations of hydrogel in different application conditions. We present the state of knowledge on hydrogel production and crosslinking methods, hydrogel characteristics, water absorption and release mechanisms of hydrogel, hydrogel advantages and limitations, and current and future applications in urban farming.

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Crosslinked CMC-urea hydrogel made from natural carboxymethyl cellulose (CMC) as slow-release fertilizer coating

Cited by 8 publications

References 7 publications

Application of superabsorbent natural polymers in agriculture

Application of superabsorbent natural polymers in agriculture

Agriculture 4.0: Polymer Hydrogels as Delivery Agents of Active Ingredients

Hydrogel Application in Urban Farming: Potentials and Limitations—A Review

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