Agriculture stocks have gotten beaten up this year, yet the bullish case - a growing, wealthier world population - remains, writes Jay Palmer. For broad exposure, there are ETFs MOO. PAGG, DBA, or companies like ADM and Bunge (BG). Equipment makers: Deere (DE), AGCO, CNH Global, Titan Int'l (TWI). Fertilizer firms: Mosaic (MOS), Potash (POT), CF Industries. Seed science: Monsanto (MON), Syngenta (SYT), Dupont (DD).