VIJAYAWADA: The Telugu Desam and the Left parties will stage dharnas at all mandal headquarters and in front of the sub-collector's office here on March 6 to register their protest against the increase in the prices of petrol and diesel and the “failure” of State and Central governments to check sky-rocketing prices of essential commodities.

Leaders of the TDP, CPI and the CPI (M) said the Central government that had the responsibility to control prices had not been able to do so.