There is enormous human resource potential in the country and India does not need foreign investment in the sector, Singh said.
The BJP leader, here to attend a wedding, said implementation of FDI had proven to be detrimental to the interests of farmers across the world.
BJP will start a nation-wide campaign against FDI in retail and corruption in the government once the ongoing winter session of Parliament ends, he said.
The BJP leader said in a few months, his party would be ready with the list of candidates for the 2014 general elections.
The exercise to shortlist the electoral candidates had already begun, and former Union Minister and sitting MP Murli Manohar Joshi will remain the candidate from Varanasi, he said.
Singh questioned the wisdom of not hanging Parliament attack accused Afzal Guru.
He said the SP government had waived off the farmers loan in the state but only with certain riders which was not mentioned in their election manifesto.
Referring to the SP government's academic grants for students from the minority community, the BJP leader said there should be no discrimination in the name of religion and caste in providing educational aid.
