Journal ArticleDOI
Entomotoxic effect of silica nanoparticles against Sitophilus oryzae (L.)
Nitai Debnath,Nitai Debnath,Sumistha Das,Dipankar Seth,Ramesh Chandra,Somesh Ch. Bhattacharya,Arunava Goswami +6 more
TLDR
In this paper, a surface-functionalized silica nanoparticle (SNP) was tested against rice weevil Sitophilus oryzae and its efficacy was compared with bulk-sized silica (individual particles larger than 1 μm).Abstract:
Fumigants and residual insecticides are commonly used to combat stored grain pests. In recent years, consumer awareness of the health hazard from residual toxicity and the growing problem of insect resistance to these conventional insecticides have led the researchers to look for alternative strategies for stored grains protection. For example, diatomaceous earth (DE) can be effective against stored grain insects. In this study, DE was used to design amorphous nano sized hydrophilic, hydrophobic, and lipophilic silica in 15–30 nm size range. Nanocides are expected to reduce the volume of application and kinetics of development of resistance in pests. We hypothesized that surface-functionalized silica nanoparticle (SNP) might be a viable alternative to conventional pesticides. Entomotoxicity of SNP was tested against rice weevil Sitophilus oryzae and its efficacy was compared with bulk-sized silica (individual particles larger than 1 μm). Amorphous SNP was found to be highly effective against this insect pest causing more than 90% mortality, indicating the effectiveness of SNP to control insect pests.read more
Citations
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Perspectives for nano-biotechnology enabled protection and nutrition of plants
TL;DR: Nanosized gold delivered DNA to plant cells while iron oxide based nanosensors detected pesticides at minute levels, assisting the development of precision farming by minimizing pollution and maximizing the value of farming practice.
Journal ArticleDOI
Nanotechnology: The new perspective in precision agriculture.
TL;DR: Precision farming is measuring and responding to inter and intra-field variability in crops to form a decision support system for crop commodities.
Journal ArticleDOI
Nanomaterials in Plant Protection and Fertilization: Current State, Foreseen Applications, and Research Priorities
TL;DR: Scientific publications and patents on nanomaterials used in plant protection or fertilizer products have exponentially increased since the millennium shift, and the United States and Germany have published the highest number of patents.
Journal ArticleDOI
Nanopesticide research: current trends and future priorities.
Melanie Kah,Thilo Hofmann +1 more
TL;DR: A great deal of research will be required over the coming years into the development of experimental protocols to generate reliable fate properties, investigations into the bioavailability and durability of nanopesticides, and evaluation of current environmental risk assessment approaches, and their refinement where appropriate.
Journal ArticleDOI
Nanopesticides: guiding principles for regulatory evaluation of environmental risks.
Rai S. Kookana,Alistair B.A. Boxall,Philip T. Reeves,Roman Ashauer,Sabine Beulke,Qasim Chaudhry,Geert Cornelis,Teresa F. Fernandes,Jay Gan,Melanie Kah,Iseult Lynch,James F. Ranville,Chris J. Sinclair,David J. Spurgeon,Karen Tiede,Paul J. Van den Brink +15 more
TL;DR: The main focus is on assessing whether the presence of the nanoformulation introduces potential differences relative to the conventional active ingredients, and the proposed changes in the test methodology, research priorities, and recommendations would facilitate the development of regulatory approaches and a regulatory framework for nanopesticides.
References
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Journal ArticleDOI
Controlled growth of monodisperse silica spheres in the micron size range
TL;DR: In this article, a system of chemical reactions has been developed which permits the controlled growth of spherical silica particles of uniform size by means of hydrolysis of alkyl silicates and subsequent condensation of silicic acid in alcoholic solutions.
Journal ArticleDOI
Saturated Solutions For the Control of Humidity in Biological Research
Paul W. Winston,Donald H. Bates +1 more
Journal ArticleDOI
The anomaly of silicon in plant biology.
TL;DR: Ample evidence is presented that silicon, when readily available to plants, plays a large role in their growth, mineral nutrition, mechanical strength, and resistance to fungal diseases, herbivory, and adverse chemical conditions of the medium.
Journal ArticleDOI
Particle surface characteristics may play an important role in phytotoxicity of alumina nanoparticles
Ling Yang,Daniel J. Watts +1 more
TL;DR: The surface characteristics of the particles play an important role in the phytotoxicity of alumina nanoparticles and when mixed with a known free hydroxyl radical scavenger, DMSO, the non-loaded particles showed decreased inhibition of root elongations.
Journal ArticleDOI
Vapor-phase synthesis of nanoparticles
TL;DR: An overview of methods for preparing nanoparticles in the vapor phase is given in this paper, and recent advances in instrumentation for monitoring vapor-phase synthesis of nanoparticles and in modeling these processes are also included.
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