TABLE CONTENTS

Study on Determination of Population Density of Fruit Trees from Karadj
of Iran
Mohammad Deimi, A. (1,2), S. Barouti (2), V. Zarrinnia (1) & E. Sedaghatfar (3)
(1) Department of Plant Pathology, Faculty of Agriculture and Natural Resources, Science and
Research Branch, Islamic Azad University, P.O. Box 14515-775, Tehran, Iran. (2) Plant Pests &
Disease Res. Dept, Agricultural &Natural Resources Res. Centre of Markazi Province, Arak, Iran;
(3)Department of Plant Protection, Faculty of Agriculture, Islamic Azad University of Arak, Arak, Iran.
In order to study nematodes of fruit trees in Karadj, 30 soil core samples were collected in
2006-2007. The nematodes were extracted by centrifugal flotation technique (Jenkins, 1964).
Nematodes Population were counted by counting slide and fixed, they were mounted on slide
for other investigation. Collections show that 26 species belonging 18 genera were identified
according to morphology characters:
1)Aphelenchoides centralis 2)Aphelenchoides limberi 3)Aphelenchus avenae 4)
Boleodorus thylactus 5)Cephalobluides sp. 6)Cephalobus sp. 7)Criconemella parvus
8)Discolaimus major 9)Ditylenchus destructor 10)Diphthrophora commonis
11)Geocenamus affinis 12)Geocenamus brevidens 13)Geocenamus stegus 14)
Helicotylenchus digonichus 15)Helicotylenchus vulgaris 16)Mesocriconema
antipolitanum 17)Mesocriconema xnoplax 18)Mesolaimus sp. 19)Mylonchulus
brachyuris 20)Mylenchulus sigmatarus 21)Pratylenchus neglectus 22)Pratylenchus
thornei 23)Pratylenchus volnut 24)Tylenchus davanei 25)Xiphinema Pachtaicum
26)Zygotylenchus guevaraii.
Counting of population density shows that 10 nematodes