KHAMMAM: Farmers urged the government to change the alignment of the Nagpur-Amaravati green field highway to brown field and stop the forcible land acquisition. The farmers staged a dharna in front of Khammam Collectorate and submitted a memorandum to the officials on Saturday. Addressing the farmers, the Rythu Sangham State leader B Rambabu said farmers would lose their valuable lands due to the construction of the green field highway. Small and marginal farmers would be left with nothing once the land acquisition is completed, he added.