engleski

Review of research and practice of production and tillage systems in Podravje region (Slovenia)

In the scope of production and tillage systems for Eastern part of Slovenia (Podravje region) we analyzed results of 4 research projects and two case studies: company Perutnina Ptuj ploughing and non ploughing tillage and farm Majerič used just conservation tillage in integrated production system in field crop and vegetable rotation. In case of comparison of grain maize yield between conventional tillage incl. sowing and direct sowing into cover crops the yields were not different in the case of use Trifolium incarnartum, but in the case of Lollium multiflorum was lower on sandy soils. On the slope field with clay soils comparisons between conventional tillage and sowing in cover crops resulted up to 3.5 t ha-1 of eroded soils. In two soil types between conventional and conservation tillage incl. ripping were not significant differences in crop rotation yields (maize, winter wheat and oilseed rape), but the yields decreased in direct sowing treatment. No significant differences were among content of humus, but CO2 emissions differed just after tillage. The highest Ecological Foot Print was calculated in case of conventional tillage, and the lowest in case of conservation tillage and depending mainly on use of fuel. After 3 years trials no impacts were on the content of humus in the soil regards different tillage systems, but number and mass of living organisms and ecological foot print of crop and vegetable production differed significantly among production systems (conventional, integrated, organic and biodynamic). However, after 7-years crop rotation in different production systems show promising results about soil characteristics and yields. For those further research of tillage systems needs to be focused more interdisciplinary, especially on sustainable i.e. organic production systems.

production system ; tillage system ; organic matter ; foot print ; yield

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