eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-09-25 13 3 1617 1621 10.13005/bbra/2308 16039 article R. S. Arvind Bharani 1 S. Karthick Raja Namasivayam 1 Department of Biotechnology, Sathyabama University, Chennai, Tamil Nadu, India. Fungal biocontrol agents are now extensively used against a wide range of insect pests associated with economic important crops.Success of the fungal biocontrol agents is primarily depends on suitable formulation which enhances the post treatment persistence and efficacy.In the present study, effect of various oil formulation on the persistence,endophytic relationship with groundnut phyllosphere and compatibility with chemical synthetic pesticides under in vitro condition.Moreover, phytotoxicity of the formulations was also studied by determination of  the seedling emergence and chlorophyll content. Among the various formulations,sunflower oil and groundnut oil revealed enhanced persistence and  best compatibility with all the tested chemical synthetic pesticides.Seedling emergence and chlorophyll content was not affected in the above mentioned oil formulations.None of the formulation revealed endophytic association with the groundnut phyllopshere.Further study will helpful to exploit the formulation principles under field condition. https://www.biotech-asia.org/vol13no3/evaluation-of-persistence-and-compatibility-with-synthetic-chemical-pesticides-of-formulated-entomopathogenic-fungi-metarhizium-anisopliae-m-sorokin/ Metarhizium anisopliae; formulation; persistence; compatibility; endophyte