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SOIL TILLAGE IMPACTS ON NUTRITIONAL STATUS OF WHEAT

Faculty of Agriculture , University J.J. Strossmayer in Osijek. Trg Sv. Trojstva 3 , HR-31000 Osijek , Croatia. djug@pfos.hr. SOIL TILLAGE IMPACTS ON NUTRITIONAL STATUS OF WHEAT. Danijel JUG, Irena JUG, Vlado KOVACEVIC, Bojan STIPESEVIC, Jasna SOSTARIC. Introduction.

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SOIL TILLAGE IMPACTS ON NUTRITIONAL STATUS OF WHEAT

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  1. Faculty of Agriculture, University J.J. Strossmayer in Osijek. Trg Sv. Trojstva 3, HR-31000 Osijek, Croatia. djug@pfos.hr. SOIL TILLAGE IMPACTS ON NUTRITIONAL STATUS OF WHEAT Danijel JUG, Irena JUG,Vlado KOVACEVIC, Bojan STIPESEVIC, Jasna SOSTARIC

  2. Introduction • Object of this study was testing nutritional status of winter wheat under different soil tillage with aim of possible new recommendation for fertilization under reduction/absence of soil tillage.

  3. Material and methods • The Field experiment • cultivar :: w. wheatDEMETRA (in rotation with soybean) • location :: eastern Croatia – experimental site near Kneževo • experimental period :: 2002-2005 • soil tillage treatments :: CT – conventional tillage DH – diskharrowing NT – no-tillage • Basic experimental plot :: 900 m-2 • fertilization :: N:P2O5:K2O= 121:130:130 kg ha-1

  4. Conventional tillage - in autumn

  5. Diskharrowing - in autumn

  6. No-tillage – early season

  7. sowing :: in October John Deere 750A interrow spacing 16.5 cm planned density 700 plants m-2 deep of sowing 2-3 cm • plant protection :: uniformly for each tillage treatments • Sampling and chemical analysis • sampling w. wheat :: Feekes 10.5 (Emergence of inflorescence completed) • samples :: microwave digestion (65% HNO3 + 30% H2O2) • analyses :: 23 elements with a Jobin-Yvon Ultrace 238 ICP-OESspectrometer (laboratory of the RISSAC. Budapest. Hungary)

  8. Soil characteristics • calcareous chernozem on loess substrate • chemical properties :: • pH (H2O) - 8.1 • pH (KCl) - 7.5 • Humus - 2.6% • CaCO3 - 2.1% • P2O5 - 18.7 mg 100 g-1 tla (AL-soluble) • K2O - 28.4 mg 100 g-1 tla (AL-soluble)

  9. Weather characteristic

  10. Results

  11. Impact of the year on nutritional status of winter wheat

  12. Influences of the soil tillage on nutritional status of winter wheat in four year average

  13. Conclusion • reduction or absence of soil tillage under conditions of calcareous chernozem of Barannya province did not seriouslyaffect nutritional status of winter wheat • usual fertilization practice can be recommended for possible use of non-conventional soil tillage practice

  14. Thank you for your attention

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