Open AccessJournal Article
The silica-nano particles treatment of squash foliage and survival and development of Spodoptera littoralis (Bosid.) larvae
TLDR
Results showed that generally hydrophilic nano-silica caused higher toxic action values than with the other treatments, and the newly hatched larvae were more susceptible to treatments than the other tested instars, in comparison with Diazinon which caused 95.95% mortality.Abstract:
The study was conducted throughout the period extended from October, 2014 to January, 2015. The main objective was to study the effect of nano-silica in comparison with Silica & Diazinon as a recommended insecticide, applied as foliar spray on squash plants in the greenhouse and fed to newly hatched larvae of Spodoptera littoralis (Bosid.) for both foliar and semi-synthetic diet applications. Squash leaves were treated with 4 different concentrations 200,300,400, and 500 ppm of the three tested compounds. In bioassays, the neonate, second and fourth instars test larvae were fed on treated leaves and monitored for larval mortality as well as certain biological parameters e.g., larval duration, pupal duration, pupal weight, pupation percentage, the rate of adult emergence and adult longevity in both treatments in comparison with untreated control foliage. Obtained results showed that generally hydrophilic nano-silica caused higher toxic action values than with the other treatments. Mortality rate among larvae in any of the treatments was directly correlated with the increase in concentration. Also, the newly hatched larvae were more susceptible to treatments than the other tested instars, where mortality was 73.07, 79, 72, 87.88 and 89.82% in concentration treatments in their ascending order, in comparison with Diazinon which caused 95.95% mortality. The observed developmental stages among survivals of test insects were also affected by the treatments. This investigation recommends the application of nanosilica at 500 ppm concentration for the suppression of S. littoralis pest.read more
Citations
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Nanotechnology in sustainable agriculture: Present concerns and future aspects
TL;DR: In this paper, a review on modern strategies used for the management of water, pesticides, limitations in the use of chemical pesticides and potential of nano-materials in sustainable agriculture management as modern approaches of nanotechnology is presented.
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Application of silicon nanoparticles in agriculture
Anshu Rastogi,Durgesh Kumar Tripathi,Saurabh Yadav,Devendra Kumar Chauhan,Marek Živčák,Mansour Ghorbanpour,Nabil I. Elsheery,Marian Brestic +7 more
TL;DR: This review brings together the literature on silicon nanoparticles and discusses the impact of Silicon nanoparticles on several aspects of agricultural sciences and the future application of silicon nanoparticle in plant growth, plant development, and improvement of plant productivity.
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Silica nanoparticles enhance disease resistance in Arabidopsis plants
Mohamed El-Shetehy,Mohamed El-Shetehy,Aboubakr Moradi,Mattia Maceroni,Didier Reinhardt,Alke Petri-Fink,Barbara Rothen-Rutishauser,Felix Mauch,Fabienne Schwab +8 more
TL;DR: It is shown that SiO 2 NPs, as well as soluble Si(OH) 4, can induce systemic acquired resistance in a dose-dependent manner, which involves the defence hormone salicylic acid, and specifically designed silica nanoparticles have the potential to serve as an inexpensive, highly efficient, safe and tracelessly degradable alternative for pesticides.
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The Effects of Foliar Sprays with Different Silicon Compounds.
TL;DR: Foliar sprays with silicates are effective as pesticides, while (stabilized) silicic acid sprays increase growth and yield and decrease biotic and abiotic stresses.
Book ChapterDOI
Experiments, Uptake Mechanisms, and Functioning of Silicon Foliar Fertilization—A Review Focusing on Maize, Rice, and Wheat
Daniel Puppe,Michael Sommer +1 more
TL;DR: The effects of Si foliar fertilization, including nano-Si fertilizers, on the three most important crops on a global scale, that is, maize, rice, and wheat, are summarized and different pathways of foliar uptake and functioning against biotic as well as abiotic stressors are discussed.
References
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Journal ArticleDOI
A method of computing the effectiveness of an insecticide
TL;DR: In order to make experimental studies comparable and statistically meaningful, the article recommends the following formula: per cent control = 100(X - Y)/X, which eliminates errors due to deaths in the control sample which were not due to the insecticide.
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The Merck index: An encyclopedia of chemicals, drugs, and biologicals
TL;DR: The Merck Index as discussed by the authors is a one-volume encyclopedia of chemicals, drugs and biologicals that contains more than 10,000 monographs, each monograph is a concise description of a single substance or a small group of closely related compounds.
Journal ArticleDOI
A Cluster Analysis Method for Grouping Means in the Analysis of Variance
A. J. Scott,M. Knott +1 more
TL;DR: In this paper, the authors used the techniques of cluster analysis to split the treatments into reasonably homogeneous groups and developed a likelihood ratio test for judging the significance of differences among the resulting groups.
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