On 07/24/97 at 07:04:02 Hayo van der Werf said: >I don't know about the livestock data, but 500 liter of water for 1 kg of >potato (dry matter) is perfectly in the right range of values. Oops. I was thinking wet weight. Am I the only one? The water usage figures are much more credible if we are talking dry basis, for beef as well as potatoes. John Lozier West Virginia University