Some researchers fear that a major switch to biofuels from such crops would create a direct competition with their use for food and animal feed , and claim that in some parts of the world the economic consequences are already visible , other researchers look at the land available and the enormous areas of idle and abandoned land and claim that there is room for a large proportion of biofuel also from conventional crops .
Any major switch to biofuels from such crops would create a direct competition with their use for food and animal feed , and in some parts of the world we are already seeing the economic consequences of such competition .