A survey of the cultivated rice area of seven Egyptian rice cultiva rs i.e. Sakha 101 ,102Gizal7l,177,178, Yasmin and Reiho grown in northeastern Nile Delta region, especially Dakahlia governorate revealed the presence of nine nematocie genera i.e. Aph e/en choide s, Helico tylenchus, Hote ro ,Hirschm annie lia, Meloidogyn e Praty!enchus, Thchodonis, Tylenchorhynchus and Tylenchus. Whereas , five of these nematodegeriera i.e. Hirschmannnîella, Meloidogyne, Tnchodonis, Tylenchorhynchus and Tylenchus were only recorded in the rhizosphere of rice plants cv. Giza 178 and Sakhal0lgrown in Damietta governorate. Hfrschmannhlla was the prevailing nematode genus as it was found in association with the rhizosphere of the seven rice cultivars surveyed, whereas, Aphelenchoides was only in the rhizosphere of rice plant cv.Sakha 101,102, Giza 178 and l7land was not detected from soil samples of Dam ella governorate.The population density of Hirschmanniella oryzae increased throughout the rice plants cv. Sakha 101 growing seasons of 2002 and 2003 during wheat-rice — barseem-ricewheat cropping sequence.lt was found in greater numbers between August and October than in other months due to the pre-flowering and flowering stages in August and September, respectively.Hirschmanniella oiyzae population was very low in the studied area previou&y planted with barseem in comparison with that when planted with wheat. With respect to H. oiyzae management on rice plant cv. Sakha 103 during the rice growing season 2003 with four chemical pesticides i.e. Malathion 57% EC, Dimethoate 40% EC. Carbo-ElNasr 10% G and Cartan 10% G as well as two plant extracts i.e. Vinca rosee and Datura stramonium, results revealed that all tested pesticideS obviously reduced the population of H. oryzae infesting soil of rice plants. Among the materials tested, Cartan 10% G (broadcasting), achieved the highest percentage of nematode reduction with value of 65.4%, followed by V. rosea (foliar spray) with value of 59.6%, whereas Carbo El-Nasr (broadcasng) gave the least value of nematode reduction (39.4%) when compared with the untreated plots, re spectiv ely.