Saudi Journal of Biological Sciences 14 (2) 137-144 December, 2007
ISSN 1319-562 X
The Official Journal of the Saudi Biological Society
htt:www.saudibiosoc.com

A New Biocontrol Fungus Trichoderma Kongii in the Kingdom of
Saudi Arabia Isolation and Identification
Al-Yahya, F.A. El-Hussieni, S.M. Ibrahim, A.A., and Ibrahim, Y.E.
Plant protection Dept., College of Food & Agricultural Science, King Saud. University, P.O. Box 2460.
Riyadh 11451, Saudi Arabia

Abstact

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 A total of 164 soil and root samples of different plant groups were collected from Abu-Arish governorate , Jazan province South West
       Saudi Arabia during the period of 2004-2005. Each sample contained feeder roots and approximately 250 g soil, taken from a depth of 20
   cm of the soil surface. Samples were analyzed by two different media. Culture fungi on Malt Extract Agar identified by Biolog Systems
  and culture fungi on Potato Dextrose Agar medium containing chloramphenicol were identified by microscopic characterization. Results
    showed that, 11 different types of fungi isolated from tested samples, Fusarium spp (40%), Rhizoctonia solani,(12%) Trichoderma spp
(12%), Macrophomina phaseoina. (7 %), Aspergillus spp (18 %) were the predominant fungal species. Helminthosporium spp (3%),
Alternaria alternate (2%), Pythium spp (2%), Curviularia spp (2%), Cladsporium spp. (1%) and Mucor spp. (1%) were less frequent.
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