Whereas the sales of the supplyer-sector grew weaker, in most of industrialized countries, the intensification of farming production appears, today, like an important challenge for the impulse of farming demand in products of industrial origin. This challenge is good for innovation, renewal of farming production techniques, but also for the modification of strength relationships inside the supplyer-sector. So, it is not contradiction free. The growth logics followed by the different industrial actors, and so, the one they implement, are not always complementary. Contradictions coming from the priorities given by these actors to extensive or intensive models assert themselves. Innovation is, more than ever, the product of the accentuation of farming constraints and industrial changings bound to the crisis. A very illustrative example is given by the reduction of the share of mechanization and the strenghtening of fine chemistry in the orientation of agricultural techniques.
