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The Utilization of Natural Enemies for the Control of Insect Pests in Organic Farming Chia-Pao Chang * Research Fellow, Adjunct chief secretary, Miaoli District Agricultural Research and Extension Station,Council of Agriculture. * Correspondence address email:bug01@mdais.gov.tw Sheng-Chuan Hwang Associate Research Fellow Adjunct Chief, Natural Enemy Branch, Miaoli District Agricultural Research and Extension Station,Council of Agriculture.
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Absrtract Injury caused by the use of chemical agents such as resistance and residual issues and the biological control of insect pests was emphasized, but large-scale research and application is a
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recent case. The utilization of the natural enemies of insect pests in bio-control was focused on predatory and parasitic natural enemies and regarded as the mainly bio-control force, and that played an essential role in insect pest control and ecological conservation. Natural enemies included predatory and parasitic insects, micro-organisms and the other animals such as mammals, birds, spiders etc. In bio-control market, there are over a hundred companies to sell the natural enemies around the world. The natural enemies have already accumulated the substantial research and promotion of energy in the past and at present in Taiwan. In this article, we will discuss the utilization of natural enemies and provide a reference in organic farming.
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Introduction
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Th e a dv er se e ff ec ts s uc h as p h yt o t ox ic i t y, p est ic i d e r es is t a nce a n d r es id ua l p r ob l e m th a t r e s ul t e d fr o m t h e a p p li ca ti o n o f a g r ic u lt u r a l c h e m ic a ls in d uc e d th e e mp h as is o f b i ol og i ca l c o nt r ol in a gr i c ul tu r a l p er f or m a nc e . Ho w e ver t he l ar ge - sc a le r e sea r c h a n d ap p l ica t i on o f b io - c on tr o l

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