Abstract
The field research was conducted on hypogley in Vrbanja, Croatia, during four growing seasons from 1992/1993 to 1995/1996. They included five soil tillage systems and three nitrogen fertilization levels in four replications for winter wheat (Triticum aestivum L.) after soybeans (Glycine max L.) as a preceding crop. Tillage treatments were: PL=conventional tillage (ploughing to 20 cm depth, diskharrowing and standard sowing); DS=diskharrowing and standard sowing; MC=tillage by multitiller and chisel, standard sowing; RS=soil tillage and sowing by RAU-Rotosem; PR=ploughing to the depth of 20 cm + RS. Nitrogen fertilization treatments were 140 (N1), 170 (N2) and 200 kg N ha−1 (N3). Wheat grain yields effects by tillage were as follows: 6.00 (PL), 5.79 (DS), 5.65 (MC), 5.61 (RS) and 5.90 t ha−1 (PR). Significant differences of yields were found only in the first year of testing. Nitrogen fertilization resulted by non-signifícant differences of yields as follows: 5.56 t ha−1 (N1), 5.85 t ha−1 (N2) and 5.96 t ha−1 (N3). The conclusion is that under certain environmental conditions it is possible to apply reduced soil tillage and moderate N fertilization.
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Zugec, I., Stipesevic, B., Jug, D. et al. Tillage and Nitrogen Effects on Winter Wheat Yield and Selected Soil Physical Properties on Hypogley of Eastern Croatia. CEREAL RESEARCH COMMUNICATIONS 34, 355–358 (2006). https://doi.org/10.1556/CRC.34.2006.1.89
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DOI: https://doi.org/10.1556/CRC.34.2006.1.89