Commodity stocks, specifically crude oil investments and agriculture stocks, are in focus right now. If the global economy is to keep growing, industrial consumers from Shanghai to Shreveport will need to buy raw materials. That means commodity investments could be very profitable in the next few months if economic indicators point upwards. Then again, crude oil prices have withdrawn a bit lately and some are afraid calls of a rebound are overdone -- and that we are due for another retest. So what's the story with commodity stocks? A few of our top InvestorPlace experts weigh in with their favorite companies in a variety of commodity-related industries from timber to crude oil to agriculture.