Controlled Release of Spirotetramat Using Starch–Chitosan–Alginate-Encapsulation

Xie, Yanli; Jiang, Wayne; Li, Fen; Liang, Xiaoyu; Wang, Meng; zhou, xueqing; Wu, Shaoying; Cheng-hui, Zhang

doi:10.1007/s00128-019-02752-5

Cited by 20 publications

(11 citation statements)

References 25 publications

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“…Bommayasamy et al (2018) reported that weeds can be effectively controlled by slow release herbicide formulations with reduced doses selectively non-toxic to crops, which remain in the soil for a long period to take care of frequently germinating weeds without leaving any residue at the end of crop season. Leaching of tebuthiuron herbicide encapsulated with calcium alginate microparticle was only to a shallow depth which resulted in minimal contamination of soil (Macedo et al, 2019;Xie et al, 2019). oxadiargyl loaded with biochar.…”

Section: Introductionmentioning

confidence: 99%

Effect of encapsulated herbicides on weed control, productivity and nutrient uptake of rice (Oryza sativa)

Bommayasamy¹,

Chinnamuthu²

2021

JEB

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Aim: To study the effect of season-long weed management using encapsulated herbicides on weed control, productivity and nutrient uptake of rice. Methodology: Field experiment was carried out with oxadiargyl encapsulated / loaded in zeolite, biochar, starch, water soluble polymer. It was compared with commercial formulation of oxadiargyl, butachlor, weed free check and weedy check. The experiments were laid out in randomized complete block design and replicated thrice. The physico-chemical properties of the experimental sites was sandy clay loam to clay loam in texture with pH ranging from 6.9 to 7.3, low organic carbon content, low available nitrogen, medium available phosphorus and potassium. Results: The lowest weed density and weed dry matter production of 47.3, 28.0 m-2 and 96.2, 32.8 kg ha-1 was observed in 2016 and 2017 respectively with the application of oxadiargyl loaded with zeolite at 20 DAT. Application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DAT and application of oxadiargyl loaded with zeolite recorded 86.7, 76.9 and 81.3, 72.8 percent higher grain yield in 2016 and 2017, respectively, as compared to weedy check. Higher N, P, K uptake was observed with application of butachlor at 1.25 kg ha-1 fb hand weeding on 40 DAT, which was comparable with oxadiargyl loaded with zeolite and oxadiargyl loaded with biochar during both the year. Interpretation: It can be concluded that oxadiargyl loaded with zeolite was more efficient in controlling weeds coupled with maximum growth and productivity under the constrained situation of manual weeding. Key words: Biochar, Encapsulation, Herbicides, Rice, Water soluble polymer, Zeolite

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Section: Introductionmentioning

confidence: 99%

Effect of encapsulated herbicides on weed control, productivity and nutrient uptake of rice (Oryza sativa)

Bommayasamy¹,

Chinnamuthu²

2021

JEB

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“…Among the four formulations, SCCA showed the highest entrapment efficiency, drug loading, and the slowest release rate. This work provided a possible approach to prolong the shelf-life of spirotetramat and reduce environmental contamination [ 30 ]. In another study, the successful fabrication of carboxymethyl chitosan (CMCS) based nanopesticides with controlled-release properties was demonstrated.…”

Section: Improving Crop Production Via Nanotechnology-enabled Innovationsmentioning

confidence: 99%

Nano-Enable Materials Promoting Sustainability and Resilience in Modern Agriculture

et al. 2021

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Intensive conventional agriculture and climate change have induced severe ecological damages and threatened global food security, claiming a reorientation of agricultural management and public policies towards a more sustainable development model. In this context, nanomaterials promise to support this transition by promoting mitigation, enhancing productivity, and reducing contamination. This review gathers recent research innovations on smart nanoformulations and delivery systems improving crop protection and plant nutrition, nanoremediation strategies for contaminated soils, nanosensors for plant health and food quality and safety monitoring, and nanomaterials as smart food-packaging. It also highlights the impact of engineered nanomaterials on soil microbial communities, and potential environmental risks, along with future research directions. Although large-scale production and in-field testing of nano-agrochemicals are still ongoing, the collected information indicates improvements in uptake, use efficiency, targeted delivery of the active ingredients, and reduction of leaching and pollution. Nanoremediation seems to have a low negative impact on microbial communities while promoting biodiversity. Nanosensors enable high-resolution crop monitoring and sustainable management of the resources, while nano-packaging confers catalytic, antimicrobial, and barrier properties, preserving food safety and preventing food waste. Though, the application of nanomaterials to the agri-food sector requires a specific risk assessment supporting proper regulations and public acceptance.

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“…A starch-chitosan-calcium alginate system showed the highest entrapment efficiency, drug/pesticide loading, and the slowest release rate, as well as an obvious slower degradation rate in soils than the commercially available formulation. [177,178]. The leaching of pesticides during the preparation of alginate beads has been improved by synthesizing bi-polymeric beads of alginate with other natural polysaccharides.…”

Section: Chitosan/starch/alginate Containing Plant Extracts As Ediblementioning

confidence: 99%

Vegetable Additives in Food Packaging Polymeric Materials

Munteanu

Vasile

2019

Polymers

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Plants are the most abundant bioresources, providing valuable materials that can be used as additives in polymeric materials, such as lignocellulosic fibers, nano-cellulose, or lignin, as well as plant extracts containing bioactive phenolic and flavonoid compounds used in the healthcare, pharmaceutical, cosmetic, and nutraceutical industries. The incorporation of additives into polymeric materials improves their properties to make them suitable for multiple applications. Efforts are made to incorporate into the raw polymers various natural biobased and biodegradable additives with a low environmental fingerprint, such as by-products, biomass, plant extracts, etc. In this review we will illustrate in the first part recent examples of lignocellulosic materials, lignin, and nano-cellulose as reinforcements or fillers in various polymer matrices and in the second part various applications of plant extracts as active ingredients in food packaging materials based on polysaccharide matrices (chitosan/starch/alginate).In this review various recent applications of plant-based additives (lignocellulosic fibers/nano-cellulose as well as bioactive plant extracts) as reinforcements and active ingredients in food packaging materials are illustrated. Natural polysaccharide biopolymers (such as chitosan/starch/alginate) are nontoxic, biodegradable, biocompatible, and largely used in food packaging: Chitosan is known for its broad antimicrobial activity and its excellent film-forming properties; alginates have good film-forming properties, retain moisture, reduce microbial counts, and retard oxidative off-flavors; and starch is also particularly important for its cheap price and its frequency in nature. For these reasons, this review will present applications of plant extracts as active ingredients in natural polysaccharide biopolymers: chitosan/starch/alginate. Classification of Natural Biodegradable Polymers and AdditivesNatural biodegradable polymers and additives are polymers formed naturally by the living organisms by enzyme-catalyzed reactions and reactions of chain growth from monomers which are formed inside the cells by complex metabolic processes [5].Natural additives can be high molecular weight (natural polymers), such as proteins (collagen, silk, and keratin), carbohydrates (starch and glycogen), lignin, cellulose, high molecular weight phenolics (tannins and derivatives), and low molecular weight active substances, such as cold-pressed oils, essential oils (organic volatile compounds, generally of low molecular weight,

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Controlled Release of Spirotetramat Using Starch–Chitosan–Alginate-Encapsulation

Cited by 20 publications

References 25 publications

Effect of encapsulated herbicides on weed control, productivity and nutrient uptake of rice (Oryza sativa)

Effect of encapsulated herbicides on weed control, productivity and nutrient uptake of rice (Oryza sativa)

Nano-Enable Materials Promoting Sustainability and Resilience in Modern Agriculture

Vegetable Additives in Food Packaging Polymeric Materials

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