W latach 2011–2013 przeprowadzono eksperyment polowy z uprawą jęczmienia jarego nagoziarnistego odmiany Rastik w systemie rolnictwa konwencjonalnego i ekologicznego. Dowiedziono, iż mimo prowadzenia starannej agrotechniki oraz wysiewu badanej rośliny w stanowisku po bardzo dobrym przedplonie (burak cukrowy) nawożonym zwiększoną dawką obornika (40 t·ha-1) wydajność i jakość ziarna jęczmienia były istotnie gorsze w systemie rolnictwa ekologicznego niż w systemie rolnictwa konwencjonalnego.

This paper presents the results of a field experiment, conducted in the period 2011–2013, which investigated the response of the naked barley cultivar ‘Rastik’ to the abandonment of the use of plant protection chemicals and mineral fertilizers resulting from the application of ecologi-cal agriculture practices. An attempt was made to compensate for the limitations arising from the assumptions of the ecological system by growing naked barley after a very good previous crop, which was sugar beet fertilized with an increased rate of farmyard manure. It was proved that the cultivation of spring naked barley in a field after sugar beet, but under the ecological system, did not guarantee comparable effects relative to those achieved under the conventional system condi-tions. Many of the studied traits had lower values under the ecological growing system compared to conventional systems.