Available Online: http://www.ejpau.media.pl/volume2/issue2/agronomy/abs-01.html
IMPACT OF POST-HARVEST SOIL CULTIVATION AND NITROGEN FERTILISATION ON THE ENERGY- AND COST- EFFECTIVENESS IN SPRING BARLEY AND WINTER WHEAT PRODUCTION
Karol Kotwica, Dariusz Jaskulski
In a four-year static field trial, an impact of post-harvest soil cultivation method and an increased nitrogen fertilisation on energetic and economic effectiveness of spring barley and winter wheat cultivation were researched. A simplified calculation method was applied in the research. Differences in energy input, direct costs and yield market value between respective variants of soil cultivation and traditional stubble skimming were estimated. Similarly, an impact of an increased nitrogen dose as compared with a lower level fertilisation was defined. It was observed that stubble mulching with cut straw was the most energy - and cost-effective post-harvest soil cultivation variant for spring barley and winter wheat. Cereal fertilisation, increased from 50 or 60 to 100-120 kg N/ha, despite an increased cumulative energy input and direct costs, showed energy- and cost- effective.
Key words: spring barley, winter wheat, post-harvest soil cultivation, intercrops, mulch, nitrogen fertilisation, energy input, direct costs..