Dear Dr.Yahya:

Duddingtonia flagrans con of the dung fungi that could be used as a nematophagous fungi. the link below could be helpful.

http://www.vetres.org/articles/vetres/abs/2002/06/05/05.html

Also, I read about Sordaria fimicola and Ascodesmis macrospora activities against plant pathogene (soil-born) like Pythium aphanidermatum.

Thank you very much Dear Dr. Labeed for your answer , I should read the items that you mentioned .

With my best greetings

Dear Dr. Yehya

I hope the attached papers could be useful for answer your question

Good luck

Sir, what was the strategy of the isolation of biocontrol agents from the soil?? 

Thank you very much Prof. Dr. Jawad for your attention and response .

I have no contact with internet last month.

With best regards

Article Entomopathogenic Fungus as a Biological Control for an Impor...

Good article about entomopathogenic fungi. Thank you for sending it.