journal of kerbala university

Samples of soil rhizospher of corn plant were collected from ten Iraq Governments .The samples were subjected to microbial analysis to determine population density of mycorrhizal fungi in soil rhizospher . results showed that the highest populalion density was Al- Diwania whereas Basrah was the lowest population, which were ( 283.3 spore/10 g ) and (113.3 spore/10 g soil) respectively. the highest infection severity was Al-Najef while Maysan was the lowest infection severity which were (78.3 %) and ( 61.7 % ) respectively.