Plant-parasitic nematodes are important threat to agricultural crops. Management through biological control agents like endoparasitic bacteria, Pasteuria spp. has shown great promise. They occur worldwide and have been reported from a wide range of environment.A comprehensive understanding the biology their mechanism underlying nematode disease suppression may help develop useful biocontrol age...

abstract in order to identify the plant parasitic nematodes of potato fields, 55 soil samples and 60 infested tuber samples were collected from different fields in khorasan razavi province during 2005-2006 . soil samples were washed and nematodes were extracted by centrifugal flotation technique. according to de grisse, the extracted nematodes were fixed and transferred to glycerin. baermann fu...

background: among the infectious organisms of parasitic origin, gastrointestinal nematodes are very important as they have been reported worldwide. the main aim of the present research study to highlight the annual epidemiological contributing factors associated with the prevalence of gastrointestinal nematodes and their control in sheep. methods: a total 1200 faecal samples (100 per month) wer...

the scientific panel on “landscape ecology” was held in nazar research center by presence of professors and experts in “landscape” and “ecology”, in order to discuss the relation of these concepts and definition of “landscape ecology”. in this panel arranged by dr. seyed amir mansouri, director of landscape architecture department at university of tehran and president of nazar research center, ...

introduction “green infrastructure” is a term that describes the abundance and distribution of natural features providing ecological services necessary for community wellbeing specially in urban areas where these are limited. green infrastructure is increasingly espoused by landscape conservation and metropolitan planning because it is an effective way to surrogate ecological network functions ...