The protesters from Left-affiliated farmers' outfits and Swadeshi Jagaran Manch (SJM) raised slogans like 'Bt Go Back'.
They also mobbed the minister on the dais at an event organised at the Central Research Institute for Dryland Agriculture (CRIDA) here.
The event was organised as part of efforts by Ramesh to hold a series of public meetings across the country over the commercial cultivation of Bt Brinjal.
Those supporting Bt Brinjal also raised slogans in support of their demand, resulting in chaos.
Addressing the event, Ramesh asserted that he will not come under the influence of any company or NGO.
The minister said he wanted to hold an impartial public consultation over the matter. The final decision on the matter would be taken after holding fair public hearings on the issue.