Replying to a specific question from reporters here, Radhakrishnan said no land in these districts had been allocated to anybody or firm for exploring petrochemicals.
He referred to Chief Minister K Palaniswami's announcement in this regard that the government would not take any steps which affected the interests of farmers.
Water is being released from Amaravathi dam from today following a request from farmers in the area, which would also benefit areas in Tirupur and Karur district, he said.