Comparison of two soil tillage treatments for winter barley-soybean growing based only on residual nitrogen after soybean

Babic, D. and Stipesevic, B. and Jug, D. and Jug, I. and Samota, D. and Kratovalieva, S. and Birkás, Márta (2008) Comparison of two soil tillage treatments for winter barley-soybean growing based only on residual nitrogen after soybean. AGRONOMSKI GLASNIK, 70 (5). pp. 465-473. ISSN 0002-1954

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Abstract

The winter barley crop growing has not been adequately researched regarding soil tillage systems, especially in crop rotation with the soybean, both crops gaining importance as food or fodder. Also, productivity of such crop rotation in low nitrogen environment is especially interesting for organic crop growing, where mineral nitrogen fertilization is not allowed. The research on two soil tillage systems, the conventional one, based on mouldboard ploughing (PLOW) and reduced soil tillage, based on discharrowing (DISC), with no other nitrogen source except symbiotic soybean bacterial fixation, was conducted at the experimental site Bokšić (Croatia), during the seasons 2004/05 and 2005/06. Results showed low but stable yields of winter barley, between 2.1 and 2.6 t ha-1, where PLOW treatment recorded lower yield than DISC in 2005, and usual soybean yields (between 2.8 and 3.4 t ha-1), with higher soybean grain yields for PLOW only in 2006. The absolute mass and hectolitre mass did not show any statistical differences among treatments either.

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