Wal-Mart Inc. is making a push into the organic arena, but - at least for now - it shouldn't concern Whole Foods Market Inc., according to an analyst. Noting the recent media coverage surrounding Wal-Mart Stores Inc.'s renewal of its partnership with organic producer Wild Oats, Motley Fool analyst Eshna Basu points out that this is not the first time the retail behemoth has tread into organic food territory.