“…The producers' tendency towards the transition to organic farming and the maintenance of this activity was directly related to advantages such as product price and sales guarantees and the technical assistance and consultancy support offered to the producers. Nowadays the leading factors bringing about a transition from conventional to organic farming are related to economic motivations, environmental impacts, institutional factors, producer preferences and values, skill or technical capacity of the farmer, agronomic and market conditions, land tenure and infrastructure, as emphasized in other studies (Nowak, 1987;Feder & Umah, 1993;Freyer et al, 1994;Lampkin & Padel, 1994;Padel, 1994;McCann et al, 1997;Fairweather, 1999;Demiryiirek, 2001;Franzel et al, 2001;Scialabba & Hattam, 2002;Hall & Khan, 2003;Franco et al, 2005). Trade companies provide important production inputs (organic fertilizer, sulphur, thuricide, petrium, technical data and financial assistance) to farms.…”