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Sustainable Agriculture

June 5, 1997

Dear Colleagues,

Although the urgent need for a sustainable agriculture is well documented,
criteria (and indicators) for sustainability have not been well

Since sustainability is defined a posteriori, THE QUESTION IS how can we
know that an agricultural system (for instance no-tillage agriculture with
numerous positive/negative points) is sustainable?

I would appreciate it very much if you could participate in this discussion!

Many thanks in advance,