By Roger Witherspoon Download and/or Print Article It is called winter canola, and the crop is a mainstay in Canada. But that harsh northern climate allows for the maturation of only one canola crop annually, while the warmer Alabama climate and rich soil is capable of producing two hardy harvests per year. That agricultural fact, and the growing need for biofuels, propels Alabama A&M University’s Ernie Cebert (  Ernst.cebert@aamu.edu  ) to try and coax local farmers into pla