Green Synthesis of Nanofertilizers and Their Application as a Foliar for<i>Cucurbita pepo</i>L

Shebl, Ahmed; Hassan, Amr; Salama, Dina M.; El-Aziz, M.E. Abd; El-Wahed, M. S. A. A.

doi:10.1155/2019/3476347

Cited by 93 publications

(29 citation statements)

References 43 publications

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“…21 Manganese is also a micronutrient used in acidic soil, 22 but its use as nano-Mn 3 O 4 has been limited. Recently, nano-Mn 3 O 4 was applied to leaves by spraying a suspension of 20 mg/L, after 20 days from the sowing of the seeds of squash plants until 40 days from sowing, 23 improving the growth plant yield but decreasing the yield of fruit. Another study reported that nano-Mn 2 O 3 applied at 6 mg/kg/plant promoted nutrient fixation in wheat, but it was found that manganese could affect plants in subtle ways when applied in soil rather than via foliar.…”

Section: ■ Introductionmentioning

confidence: 99%

Dissolution and Aggregation of Metal Oxide Nanoparticles in Root Exudates and Soil Leachate: Implications for Nanoagrochemical Application

Cervantes-Avilés

Huang

Keller

2021

Environ. Sci. Technol.

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Knowledge of dissolution, aggregation, and stability of nanoagrochemicals in root exudates (RE) and soil leachate will contribute to improving delivery mechanisms, transport in plants, and bioavailability. We characterized aggregation, stability, and dissolution of four nanoparticles (NPs) in soybean RE and soil leachate: nano-CeO 2 , nano-Mn 3 O 4 , nano-Cu(OH) 2 , and nano-MoO 3 . Aggregation differed considerably in different media. In RE, nano-Cu(OH) 2 , and nano-MoO 3 increased their aggregate size for 5 days; their mean sizes increased from 518 ± 43 nm to 938 ± 32 nm, and from 372 ± 14 nm to 690 ± 65 nm, respectively. Conversely, nano-CeO 2 and nano-Mn 3 O 4 disaggregated in RE with time, decreasing from 289 ± 5 nm to 129 ± 10 nm, and from 761 ± 58 nm to 143 ± 18 nm, respectively. Organic acids in RE and soil leachate can be adsorbed onto particle surfaces, influencing aggregation. Charge of the four NPs was negative in contact with RE and soil leachate, due to organic matter present in RE and soil leachate. Dissolution in RE after 6 days was 38%, 1.2%, 0.5%, and <0.1% of the elemental content of MoO 3 , Cu(OH) 2 , Mn 3 O 4 , and CeO 2 NPs. Thus, the bioavailability and efficiency of delivery of the NPs or their active ingredients will be substantially modified soon after they are in contact with RE or soil leachate.

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Section: ■ Introductionmentioning

confidence: 99%

Dissolution and Aggregation of Metal Oxide Nanoparticles in Root Exudates and Soil Leachate: Implications for Nanoagrochemical Application

Cervantes-Avilés

Huang

Keller

2021

Environ. Sci. Technol.

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“…Hence, bioinspired synthesis of nanofertilizers will be a key not only in decreasing the cost of production and making the production safe, but it also influences the growth at a much higher pace. The reason behind their biocompatibility which has no toxic impacts on plants and slow-release with the passage of time which allows the plants to utilize them properly [ 38 , 39 ]. However, the negative influence at higher concentration might be due to the accumulation of NRs around the shoots or extensive release of iron which negatively impact the growth like iron salt [ 40 , 41 ].…”

Section: Resultsmentioning

confidence: 99%

Physiological and anti-oxidative response of biologically and chemically synthesized iron oxide: Zea mays a case study

Hasan

Rafique

Zafar

et al. 2020

Heliyon

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The synthesis methodology, particle size and shape, dose optimization, and toxicity studies of nano-fertilizers are vital prior to their field application. This study investigates the comparative response of chemically synthesized and biologically synthesized iron oxide nanorods (NRs) using moringa olefera along with bulk FeCl 3 on summer maize (Zea mays). It is found that FeCl 3 salt and chemically synthesized iron oxides NRs caused growth retardation and impaired plant physiological and anti-oxidative activities at a concentration higher than 25 mg/L due to toxicity by over accumulation. While iron released form biologically synthesized NRs have shown significantly positive results even at 50 mg/L due to their low toxicity, an improved leaf area (13%), number of leaves per plant (26%), total chlorophyll content (80%) and nitrate content (6%) with biologically synthesized NRs are obtained. Moreover, the plant anti-oxidative activity also increased on treatment with biologically synthesized NRs because of their ability to form a complex with metal ions. These findings suggest that biologically synthesized iron oxides NRs are an efficient iron source and can last for a long time. Thus, proving that nanofertilizer are required to have specific surface chemistry to release the nutrient in an appropriate concentration for better plant growth.

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“…Shebl et al [43] have synthesized zinc, manganese, and iron nanooxides via a green chemistry technique using a microwave-assisted hydrothermal method weight in maize plantlets indicating that these can be used as micronutrient nanofertilizer [44]. Open Journal of Ecology…”

Section: Nanofertilizersmentioning

confidence: 99%

Nanopesticides and Nanofertilizers and Agricultural Development: Scopes, Advances and Applications

Bratovčić¹,

Hikal²,

Ahl³

et al. 2021

OJE

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Excessive use of pesticides and fertilizers in agriculture in order to increase yields has proved unnecessary because a large part of them remain unused and have negative effects on the environment and human health. Therefore, it is a great challenge for farmers to replace the application of pesticides and fertilizers with nanopesticides and nanofertilizers, with the aim of reducing the use of mineral fertilizers and increasing yields, as well as supporting agricultural development. This review provides a detailed overview of the classification of pesticides, commonly used nanoparticles in agriculture and their function, as well as impact of nanopesticides and nanofertilizers on the environment. The application of nanopesticides and nanofertilizers and new delivery mechanisms to improve crop productivity are reviewed and described. Particularly, the advantage of the nanoencapsulation process is emphasized for both pesticides and fertilizers. For hydrophobic pesticides, it may be a tool to provide greater stability, dispersion in aqueous media, and allowing a controlled release of the active compound, which increases its effectiveness. In nanofertilizers, micro-or macronutrients can be encapsulated by nanomaterials which allow to release of nutrients into the soil gradually and in a controlled way maintaining soil fertility, thus preventing eutrophication and pollution of water resources. Risks assessment of application of nanopesticides and nanofertilizers in agriculture are required for their correct and safe application.

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Green Synthesis of Nanofertilizers and Their Application as a Foliar forCucurbita pepoL

Cited by 93 publications

References 43 publications

Dissolution and Aggregation of Metal Oxide Nanoparticles in Root Exudates and Soil Leachate: Implications for Nanoagrochemical Application

Dissolution and Aggregation of Metal Oxide Nanoparticles in Root Exudates and Soil Leachate: Implications for Nanoagrochemical Application

Physiological and anti-oxidative response of biologically and chemically synthesized iron oxide: Zea mays a case study

Nanopesticides and Nanofertilizers and Agricultural Development: Scopes, Advances and Applications

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