The objective of this study was to determine the effect of varied organic fertilisation of stubble intercrop, straw and stubble (the control) and three nitrogen fertilizer doses (0, 50 and 100 kg·ha^-1) with three tillage methods: traditional, simplified and direct sowing, on spring barley yield. Spring barley yielded higher when exposed to traditional tillage than to simplified tillage and direct sowing. The highest spring barley grain yield was recorded after stubble intercrop when a legume participated, while leaving straw significantly decreased the grain yield in all the tillage systems. Spring barley grown without nitrogen fertilisation after stubble intercrop yielded higher than barley after stubble or straw following the fertilisation with the dose of 50 kg·ha^-1 of N. Introducing a stubble intercrop with a participation of a legume allows for high yields of successive crops with low N fertilizer doses and for reducing a negative response of crops to simplified tillage systems.

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