The major diseases affecting chilli productions are Anthracnose, Phytopthora, Leaf blight, Fusarium wilt, bacterial wilt, damping-off and root rot etc. Among these, Fusarium wilt caused by the Fusarium oxysporum has emerged as a serious problem in recent year. In this investigation, to study the mycorrhizal population dynamics and wilt intensity in chilli growing areas of state, the survey was undertaken during crop season 2017-18 in Hisar, Fatehabad and Mohindergarh districts. | The mycorrhizal population dynamics and wilt intensity in chilli growing Areas of Haryana