Kelany, Ibrahim M. <br/><br/>
Study on some plant extracts and their formulations as save, alternative and bio- control measures for certain insect pests  [electronic resource]. 

 - p.949-960. 
<br/><br/>Includes references. 
<br/><br/> The conventional pesticides caused for the time being many problems, some of which the appearance of highly resistant strains of numerous pests, deleterious effects on the environment. At the same time such pesticides are expensive to export for developing poor countries with limited foreign currency. Therefore, the search for bio-active substances which have satisfactory properties concerning their effects on the target pests, not expensive to produce and also environmental safety is nowadays very urgent and not later on. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pests--Biological control.<br/>Plant extracts.