1 edition of Effects of high-frequency electric fields on certain species of stored-grain insects found in the catalog.
Effects of high-frequency electric fields on certain species of stored-grain insects
W. Keith Whitney
by Market Quality Research Division, Agricultural Marketing Service, U.S. Dept. of Agriculture in Washington, D.C
Written in English
|Other titles||Effects of high frequency electric fields on certain species of stored-grain insects.|
|Statement||[by W.K. Whitney, S.D. Nelson, and H.H. Walkden]|
|Series||Marketing research report -- no. 455|
|Contributions||Nelson, Stuart D., Walkden, H. H. (Herbert Halden), b. 1893|
|The Physical Object|
|Pagination||iii, 52 p. :|
|Number of Pages||52|
effect of high-frequency fields on micro-organisms. hugh fleming. because of the many vague and conflicting reports on the effect of short waves on micro-organisms, the laboratory analysis reported in this article was undertaken; the author has endeavored to correlate the electrical data with medical and bacteriological data. This handy pocket guide is designed to complement the more comprehensive book Insects of Stored Products also by David Rees. Features * A unique colour illustrated pocket guide to pests of durable stored food and fiber commodities * Each species illustrated with concise information on distribution, host rangeReviews: 3.
Introduction - Stored Grain Pest Management Pest Management for grain Storage and Fumigation David K. Weaver and A. Reeves Petroff INTRODUCTION Losses of grain in storage due to insects are the final components of the struggle to limit insect losses in agricultural production. These losses can exceed those incurred while growing the crop. standing in the field. They may also move to newly stored grain from fields and infested grain bins near-by. Insect populations can reach high levels when left unchecked in grain bins, subfloors, or aeration ducts, and in grain-moving equipment or discarded grain. These areas must be kept free of insects to reduce migration to newly harvested.
Electric Sense. The omnipresent electric fields produced by some animals function like senses. Electric eels and some species of rays have modified muscle cells that produce electric charges strong enough to shock and sometimes kill their prey. Other fish (including many sharks) use weaker electric fields to help them navigate murky waters, home in on prey or monitor their . Stored Grain Insect Reference March Page 5 STORED-GRAIN INSECTS INTRODUCTION Since the establishment of Federal standards for grain under the pro-visions of the Grain Standards Act, Federal grain supervisors and federally licensed grain inspectors have been required to identify the various species of “live.
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Effects of high-frequency electric fields on certain species of stored-grain insects. Washington, D.C.: Market Quality Research Division, Agricultural Marketing Service, U.S. Dept. of Agriculture, The following is based largely on the authors' summary. Tests were made in Kansas in on the use of high-frequency electric fields to control infestation in stored grain [cf R.A.E., A 50etc.], in which Coleop-tera of six species in plastic boxes of wheat and wheat snorts were exposed to electric fields of different frequencies and intensities for various periods to determine Cited by: The coaxial type irradiation chamber W, the electric fields result in E 0 =×10 5 V/m This chamber (Fig.
1) was made from standard and E =×10 5 V/m, etc. copper coaxial mm/70 mm feeder. Insects are continually exposed to Radio-Frequency (RF) electromagnetic fields at different frequencies. The range of frequencies used for wireless telecommunication systems will Cited by: 7.
Physiologic injuries in stored-grain insects following exposure to RF electric fields were noted in the appendages, particularly in the joints of the legs (Whitney et al., ). Heat injury to the histoblasts was suspected in RF-treated larvae of the yellow mealworm that developed into adults with badly deformed or missing legs (Kadoum et al.
brackets corresponds to the species number in this book. Pest type Insects infesting stored grain feed and live in a number of ways, including: Commodity feeders These feed directly on commodities and can be conve-niently divided into primary pests, those that attack intact commodities, and secondary pests, which require the 2 Insects Several species of insect were exposed, in wheat or wheat shorts, to electric fields at frequencies of about 10 and 39 megacycles/sec and intensities of to kV/in.
Adult rice weevils (Sitophilus oryzae) were killed more quickly ( sec) at the higher field intensities but larvae were killed equally well over the range used. Confused flour beetles (Tribolium confusuni) were killed more. () Effects of high-frequency electric fields on certain species of stored grain insects.
U.S. Dept. Agric. Mktg. Res. Rept.52 pp. Recommended articles Citing articles (0). Given that static electric fields from power lines can have deleterious effects on some insect populations (e.g. bees) (Bindokas et al., ) under certain environmental conditions, it is pertinent to determine how static electric fields affect insect locomotion, and also to consider the possibility of using electric fields as barriers to insect.
Webber HH, Wagner RP, Pearson AG. High frequency electric fields as lethal agents for insects. J Econ Entomol. ; – Xiong SB, Liu QY, Cheng XX, Zhao SM. Effect of microwave on rice mould growth properties. In: Wang B, Huang Q, Li Q, Chen Y, Mei F, Wei Q, Zhuo J, editors.
Proceedings of CIGR international conference. Agricultural stored products are attacked by more than field insects, including species of beetles, 70 species of moths and about species of mites causing quantitative and.
5G Frequencies are Highly Absorbed into Insects- Especially Bees “ Exposure of Insects to Radio-Frequency Electromagnetic Fields from 2 to GHz ” published in Scientific Reports is the first study to investigate how insects (including the Western honeybee) absorb the higher frequencies (2 GHz to GHz) to be used in the 4G/5G rollout.
Stored Grain Insect Reference September Page 2 Abstract Five primary pests cause most of the insect damage to grain in storage and shipment. These are the granary weevil, the rice weevil, the maize weevil, the lessor grain borer or Australian wheat weevil, and the Angoumois grain moth.
Other insect species or groups of species described in. Effect of high-frequency radiations on survival of the honeybee (Apis mellifera L.). high-strength electric fields with harmful insects. () Ponomaryova IA et al. J Microw Power Electromagn Energy. ;43(4) Effects of electromagnetic fields on marine species: A literature review.
() Oregon Wave Energy Trust. Effects of pulsed and sinusoidal ELF fields on the electrical activity of the nervous system have also been studied extensively.
22, 23 In general, only high-intensity sinusoidal electric fields or rapidly pulsed magnetic fields induce sufficient current density in tissue (around A/m 2 or higher) to alter neuronal excitability and. This book, Insect Pests of Stored Grain: Biology, Behavior, and Management Strategies, provides comprehensive coverage of stored product entomology for the sustainable management of insects and other noninsect pests, such as mites, birds, rodents, and fungi, with the aim to mitigate and eliminate these losses of food from grains.
For example, a paper by Nelson, Stetson and Rhine entitled Factors Influencing Effectiveness of Radio-Frequency Electric Fields for Stored-Grain Insect Control published in Transactions of the ASAE, Vol. 9, No. 6, pp. () cites a number of references to controlling stored grain insects by RF or high frequency electric fields.
nterest in the possibility of controlling insects with high-frequency electric energy dates back nearly 70 years. Headlee and Burdette (), citing one earlier published note, reported results of initial experiments determining lethal exposures for several insect species subjected to MHz electric fields.
An electric field screen prevents captured insects from escaping by depriving bioelectricity generated through insect movements. Journal of Electrostatics.  Matsuda Y, Kakutani K, Nonomura T, Kimbara J, Kusakari S, Osamura K and Toyoda H. An oppositely charged insect exclusion screen with gap-free multiple electric fields.
per meter (kV/m) and magnetic fields in microteslas (µT). Studies by Hydro-Québec, a Canadian power company, found that the ambient magnetic field produced by all electric currents flowing inside and outside a Canadian home ranges from to 1 µT, while household appliances alone may generate magnetic fields of up to 4 µT (Hydro-Québec.
Insects and pests constitute a major threat to food supplies all over the world. Some estimates put the loss of food grains because of infestation to about 40% of the world production.
Contemporary disinfestation methods are chemical fumigation, ionizing radiation, controlled atmosphere, conventional hot air treatment, and dielectric heating, that is, radio frequency and microwave energy, and.Effects of high-frequency electric fields on certain species of stored-grain insects.
Marketing Research Report No. 52 pp. * Storey, C.L. What are the prerequisites to any successful fumigation in the forced vs. gravity way? Infestation problems multiplying; excessively expensive for .but a growing number of studies suggest that under certain circumstances even relatively weak electric and magnetic fields can produce biologic changes.
This report discusses the present state of knowledge on the health effects of low-frequency electric and magnetic fields and describes current U.S. funding levels and research programs.