I agree with Prakhar. FDI in retail will increase the competition within multi-brand retail outlets. Opposition party's argument that this will lead to more wastage of raw outputs is ridiculous. There's always a buyer for food, as long as it is not rotten. So if Walmart rejects a lot of farm products, they could possibly be bought by DMart or Hypercity or whatever.
On a flip side, this also means that the bargaining power of farmers can increase. If the quality of his output is high, he is in a powerful position to negotiate.