نتایج جستجو برای: الگوی pest

تعداد نتایج: 61221  

2002

Due to the high demand for pest control in Sri Lankas’ rice paddy cultivation practices, the number of new pesticides has been recently introduced. However, the new pesticides, which are flowing into the agriculture sector of Sri Lanka, appeared to be used by farmers without obtaining proper application guidance from the suppliers or from extension services. As a result, the exposure to harmful...

Journal: :Risk analysis : an official publication of the Society for Risk Analysis 2003
Trond Rafoss

Pest risk analysis represents an emerging field of risk analysis that evaluates the potential risks of the introduction and establishment of plant pests into a new geographic location and then assesses the management options to reduce those potential risks. Development of new and adapted methodology is required to answer questions concerning pest risk analysis of exotic plant pests. This resear...

Journal: :Ecological applications : a publication of the Ecological Society of America 2011
Kevin Gross Jay A Rosenheim

Secondary pest outbreaks occur when the use of a pesticide to reduce densities of an unwanted target pest species triggers subsequent outbreaks of other pest species. Although secondary pest outbreaks are thought to be familiar in agriculture, their rigorous documentation is made difficult by the challenges of performing randomized experiments at suitable scales. Here, we quantify the frequency...

Journal: :Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology 2013
B I Silbert H I Patterson D D Pevcic K A Windnagel G W Thickbroom

OBJECTIVE Stimulation intensity (SI) in transcranial magnetic stimulation is commonly set in relation to motor threshold (MT), or to achieve a motor-evoked potential (MEP) of predefined amplitude (usually 1 mV). Recently, IFCN recommended adaptive threshold-hunting over the previously endorsed relative-frequency method. We compared the Rossini-Rothwell (R-R) relative-frequency method to an adap...

Journal: :The Journal of biological chemistry 2000
Y Shen P Lyons M Cooley D Davidson A Veillette R Salgia J D Griffin M D Schaller

The noncatalytic domain of protein-tyrosine phosphatase (PTP)-PEST contains a binding site for the focal adhesion-associated protein paxillin. This binding site has been narrowed to a 52-residue sequence that is composed of two nonoverlapping, weak paxillin binding sites. The PTP-PEST binding site on paxillin has been mapped to the two carboxyl-terminal LIM (lin11, isl-1, and mec-3) domains. Tr...

Journal: :J. Artificial Societies and Social Simulation 2011
François Rebaudo Verónica Crespo-Pérez Jean-François Silvain Olivier Dangles

Agent-based models (ABM) are ideal tools to deal with the complexity of pest invasion throughout agricultural socio-ecological systems, yet very few studies have applied them in such context. In this work we developed an ABM that simulates interactions between farmers and an invasive insect pest in an agricultural landscape of the tropical Andes. Our specific aims were to use the model 1) to as...

2016
Charlotte Poeydebat Dominique Carval Luc de Lapeyre de Bellaire Philippe Tixier

Agroecosystem plant diversification can enhance pest biological regulation and is a promising alternative to pesticide application. However, the costs of competition for resources between plants may exceed the benefits gained by pest regulation. To disentangle the interactions between pest regulation and competition, we developed a generic process-based approach that accounts for the effects of...

جوزیان, عسگر , عبادی, رحیم ,

In order to study the parasitoid flies of Sunn pest in Isfahan, this research was conducted during the years 1997-1998. The results indicated that the dominant species of parasitoid fly is Phasia subcoleoptrata L. This species has two generations per year and over winters as pupae in soil under the shrubs of aestivation and hibernation places of Sunn pest and remains there until the following s...

Journal: :International Journal of Mathematical, Engineering and Management Sciences 2020

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