Synthesis and characterization of a novel slow-release nanourea/chitosan nanocomposite and its effect on <i>Vigna radiata</i> L.

Sharma, Avimanu; Kumar, Sanjeev; Singh, Ritu

doi:10.1039/d2en00297c

Cited by 7 publications

(4 citation statements)

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“…Another study reported that nitrogen from urea coupled with humic acid aided in the root growth and construction in sweet potato which resulted in improved biomass and plant yield [44]. Similar to the ndings here, using nanourea coupled with chitosan, another study reported the enhanced effects in root length in Vigna radiata [11].…”

Section: Early Effects Of Tnu On Seedling Germination and Growthsupporting

confidence: 83%

“…Recently, using nanomaterials, several studies have reported the development of different types of combinations for delivering urea/nitrogen to plants by incorporating the cargo carrier approaches. In a study by Sharma et al (2022), nanocomposite of urea and chitosan was synthesised to work as a slowrelease fertiliser and showed enhanced plant growth effects in Vigna radiata [11]. Using chitosan as a carrier, in another study by Saad et al (2022), nitrogen was delivered to wheat plants to observe bene cial effects on plants [12].…”

Section: Introductionmentioning

confidence: 99%

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Microbially synthesised agriculturally useful urea nanoparticles have no phytotoxicity and show enhanced fertilising effects in Kharif (monsoon) paddy

Priyam¹,

Seth²,

Shukla³

et al. 2023

Preprint

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Urea has been used as a conventional nitrogenous fertiliser since long, however, the nutrient use efficiency of the conventional urea is low due to issues related to ammonia volatilisation. Nanotechnology-based fertilisers are now proposed to reduce the dose of conventional fertilisers and enhance nutrient use efficiency. In the present study, we proposed a novel microbial-assisted synthesis approach for urea nanoparticles (TERI NanoUrea: TNU) using a microbial co-culture approach that included two species from the Bacillaceae family. This approach is an eco-friendly method as opposed to the synthesis of conventional urea. In brief, the synthesis reaction was modelled using Monod’s kinetics for bacterial growth in presence of substrate. Two species of Bacilluswere co-cultured and during the algorithmic growth phase were exposed to the bulk substrate (conventional urea: 46% N). Difference in release patterns of organic acids, carbohydrates, lipids, and proteins during microbial culture exposure to bulk substrate was observed, which resulted in the synthesis of urea nanoparticles (TNU) after 24 hr of incubation. Also, biomolecules released during synthesis of nanoparticles contributed to a biomolecular corona over the nanoparticles. The prepared TNU was thoroughly characterised by using various physicochemical and analytical techniques and it was observed that via microbial synthesis approach, 5-15 nm sized spherical particles possessing inherent characteristics of urea were synthesised. Along with the synthesis and characterisation we also investigated the effects of TNU on the early development of seedlings of a monocot (maize) and two dicot (tomato and okra) species. It was found that the novel biogenic TNU did not show any phytotoxicity to the selected monocot and dicot species and resulted in enhanced seed vigour and plant growth. Further, the TNU was used in Kharif (monsoon) field trials on paddy for nitrogen supplementation to the conventional urea fertilisers. The field trial observations showed the agronomic efficiency of replacing 25% of the conventional urea with TNU (TNU + 75% urea along with 100% treatment with recommended doses of phosphorus and potassium fertilisers). These results suggest that biogenic TNU, can be explored further for its application to various crop systems and can aid in supplementation of conventional urea fertilisers.

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Section: Early Effects Of Tnu On Seedling Germination and Growthsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Microbially synthesised agriculturally useful urea nanoparticles have no phytotoxicity and show enhanced fertilising effects in Kharif (monsoon) paddy

Priyam¹,

Seth²,

Shukla³

et al. 2023

Preprint

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“…Such a sustained nutrient supply is instrumental in fostering the development of a robust root system, which is pivotal for the overall health and resilience of plants in later stages ( Wang et al., 2020 ). The inception of nanofertilizers, particularly formulations, such as coated nanourea, accentuates the fusion of technology with traditional farming practices ( Sharma et al., 2022 ). The observed enhancement in parameters, such as root and shoot length, photosynthetic pigments, and antioxidative capabilities in plants treated with nanourea/chitosan nanocomposites, as opposed to bare nanourea or commercial urea, indicates the potential of these novel fertilizers.…”

Section: Nutrition and Water Management In Agriculture Farming System...mentioning

confidence: 99%

Advancing horizons in vegetable cultivation: a journey from ageold practices to high-tech greenhouse cultivation—a review

Ahmed,

Zhang,

Deng

et al. 2024

Front. Plant Sci.

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Vegetable cultivation stands as a pivotal element in the agricultural transformation illustrating a complex interplay between technological advancements, evolving environmental perspectives, and the growing global demand for food. This comprehensive review delves into the broad spectrum of developments in modern vegetable cultivation practices. Rooted in historical traditions, our exploration commences with conventional cultivation methods and traces the progression toward contemporary practices emphasizing the critical shifts that have refined techniques and outcomes. A significant focus is placed on the evolution of seed selection and quality assessment methods underlining the growing importance of seed treatments in enhancing both germination and plant growth. Transitioning from seeds to the soil, we investigate the transformative journey from traditional soil-based cultivation to the adoption of soilless cultures and the utilization of sustainable substrates like biochar and coir. The review also examines modern environmental controls highlighting the use of advanced greenhouse technologies and artificial intelligence in optimizing plant growth conditions. We underscore the increasing sophistication in water management strategies from advanced irrigation systems to intelligent moisture sensing. Additionally, this paper discusses the intricate aspects of precision fertilization, integrated pest management, and the expanding influence of plant growth regulators in vegetable cultivation. A special segment is dedicated to technological innovations, such as the integration of drones, robots, and state-of-the-art digital monitoring systems, in the cultivation process. While acknowledging these advancements, the review also realistically addresses the challenges and economic considerations involved in adopting cutting-edge technologies. In summary, this review not only provides a comprehensive guide to the current state of vegetable cultivation but also serves as a forward-looking reference emphasizing the critical role of continuous research and the anticipation of future developments in this field.

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“…Reports have been published on a wide range of potential applications in the agroenvironmental sector, such as agrochemical delivery [11], nanofertilisers [12], improved stress tolerance [13], nanopesticides [14], soil protection [15], food packaging [16] and contaminant removal [17], amongst others. In general, the benefits of the use of nanotechnology would include a reduction in the use of scarce resources such as, for example, a 50% saving in the use of water for growing Egyptian clover (Trifolium alexandrinum) under desert conditions with the use of a nanoclay soil amendment [18], a reduction in environmental damage such as a study that demonstrated a reduction in nitrogen leaching of up to 55% using nanocomposite nanourea in the cultivation of mung beans (Vigna radiata L.) [19], and a reduction in the amount of agrochemical required for crop protection such as a study in which nanoemulsions containing the pesticide abamectin demonstrated a 50% lethal concentration (LC 5 0) nearly five times less than the emulsifiable concentrate of the same chemical against diamondback moth (Plutella xylostella) larvae [20]. Of particular interest for this review would be the utilisation of nanotechnology for the detection and analysis of a wide range of analytes.…”

Section: Introductionmentioning

confidence: 99%

Machine Learning Techniques for Improving Nanosensors in Agroenvironmental Applications

Arellano Vidal,

Govan

2024

Agronomy

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Nanotechnology, nanosensors in particular, has increasingly drawn researchers’ attention in recent years since it has been shown to be a powerful tool for several fields like mining, robotics, medicine and agriculture amongst others. Challenges ahead, such as food availability, climate change and sustainability, have promoted such attention and pushed forward the use of nanosensors in agroindustry and environmental applications. However, issues with noise and confounding signals make the use of these tools a non-trivial technical challenge. Great advances in artificial intelligence, and more particularly machine learning, have provided new tools that have allowed researchers to improve the quality and functionality of nanosensor systems. This short review presents the latest work in the analysis of data from nanosensors using machine learning for agroenvironmental applications. It consists of an introduction to the topics of nanosensors and machine learning and the application of machine learning to the field of nanosensors. The rest of the paper consists of examples of the application of machine learning techniques to the utilisation of electrochemical, luminescent, SERS and colourimetric nanosensor classes. The final section consists of a short discussion and conclusion concerning the relevance of the material discussed in the review to the future of the agroenvironmental sector.

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Synthesis and characterization of a novel slow-release nanourea/chitosan nanocomposite and its effect on Vigna radiata L.

Abstract: Nano-fertilizers play a significant role in sustainable agriculture. In the present work, a new formulation of coated nanourea has been proposed for the slow and sustainable release of nitrogen. Bare...

Cited by 7 publications

References 71 publications

Microbially synthesised agriculturally useful urea nanoparticles have no phytotoxicity and show enhanced fertilising effects in Kharif (monsoon) paddy

Microbially synthesised agriculturally useful urea nanoparticles have no phytotoxicity and show enhanced fertilising effects in Kharif (monsoon) paddy

Advancing horizons in vegetable cultivation: a journey from ageold practices to high-tech greenhouse cultivation—a review

Machine Learning Techniques for Improving Nanosensors in Agroenvironmental Applications

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