A panel of Union ministers held a fourth round of talks with farmer leaders here on Sunday over their demands, including a legal guarantee of MSP, as thousands of protesting farmers camped at the Punjab-Haryana border. Agriculture and Farmer Welfare Minister Arjun Munda, Minister of Commerce and Industry Piyush Goyal and Minister of State for Home Affairs Nityanand Rai reached the Mahatma Gandhi State Institute of Public Administration in Sector 26 for the talks. Punjab Chief Minister Bhagwant Mann also joined the meeting, which began at 8.15 pm on Sunday and ended at around 1 am on Monday. Talking to reporters after the meeting, Mr Goyal said the panel has proposed the buying of pulses, maize, and cotton crops by government agencies at minimum support prices for five years after entering into an agreement with farmers.