Deepak Fertilisers And Petrochemicals Corporation Limited (BSE:500645) has revised its open offer to acquire additional 26% stake in Mangalore Chemicals & Fertilizers Limited (BSE:530011) to INR 93.60 per share. Chief of Zuari Agro Chemicals Limited (BSE:534742), Saroj Poddar and Mangalore Chemicals & Fertilizers promoter Vijay Mallya have also revised their open offer in a bid to ward off Deepak Fertilisers' move at INR 81.60 per share.