1. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Mineral fertilization and liming impact on maize and wheat yield Zdenko LONČARIĆ, Domagoj RASTIJA, Krunoslav KARALIĆ, Brigita POPOVIĆ Faculty of Africulture in Osijek, Croatia

2. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia The aim of paper: Combined influence of liming and phosphorus mineral fertilization on: 1.soil pH reaction 2.wheat and maize yield 3.phosphorus & calcium concentrations & removal

3. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Field trials at Donji Miholjac (eastern Croatia) liming 2003 – maize 2004 – wheat 2005 Soil properties dystric luvisolcalcaric regosol pH KCl 4.027.14 humus 1.66 %1.42 % P 2 O 5 149 mg kg -1 139 mg kg -1 K 2 O 167 mg kg -1 109 mg kg -1 calcaric regosol:limey substrate excavated & redeposited as top soil layer back in 1986

4. liming no lime Ca = 10 t ha -1 carbocalk 2Ca = 20 t ha -1 carbocalk fertilization no fertilizers P1 = 150 kg P 2 O 5 + NK P2 = 300 kg P2O5 + NK 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Liming 2003 &Fertilization 2003 & 2004 dystric luvisolcalcaric regosol no P2 P1

5. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Liming & P fertilization impact on soil pH: no lime 10 t ha -1 20 t ha -1

6. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Liming & P fertilization impact on maize yield:

7. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Liming & P fertilization impact on wheat yield:

8. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Wheat: P & Ca removal in kg ha -1 kg P ha -1 kg Ca ha -1

9. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Maize: P & Ca removal in kg ha -1 kg P ha -1 kg Ca ha -1

10. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Conclusions 1.Increasing mineral phosphorus fertilization decreased soil pH 2.Liming increased wheat grain yield and P removal 3.Doubled P fertilization didn’t significantly influenced yield 4.Grains removed more P & less Ca than straws

11. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Liming & P fertilization impacts to publish... 1.Liming: Al, Co, Mn, Ni, Pb Ca, P, B, Mo 2. P fertilization:P, Cd SOIL WHEAT GRAIN 1.Liming: Co, Cd, Fe, Mn, Ni B, Mo 2. P fertilization: Zn Cd

12. 5 th Alps-Adria Workshop, 6 th -9 th March 2006, Opatija, Croatia Thank you for your attention