Response of maize, wheat and barley to phosphorus and potassium fertilization (CROSBI ID 150299)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Kovačević, Vlado ; Stojić, Biserka ; Rastija, Mirta ; Brkić, Ivan ; Drezner, Georg
engleski
Response of maize, wheat and barley to phosphorus and potassium fertilization
The experiment with increased rates of fertilization was conducted in spring of April 2003 in Badljevina (west edge of Pozega- Slavonia County). Total seven treatments were applied as follows (kg ha-1): a) standard fertilization or control (160 N + 150 P2O5+ 100 K2O) ; b) a + 500 P2O5 ; c) a + 1000 P2O5 ; d) a + 500 K2O ; e) a + 1000 K2O, f) a + 500 P2O5 + 500 K2O and g) a + 1000 P2O5 + 1000 K2O. Phosphorus was added as MAP (monoammonium- phosphate: 12% N + 52% P2O5) and potassium in KCl form (60% K2O). The field trial was conducted by randomized block design in four replicates. Gross of the individual plot of fertilization was 46.2 m2 (11 x 4.2 m). Crop rotation has been as follows: maize (2003-2004) – wheat (2005) – maize (2006) - winter barley (2007) – maize (2008). In general, maize yields in the experiment were high (4-year mean 11.08 t ha-1) and response to applied fertilization was low because only in 2006 significant yield increase for 10% was found as result of ameliorative P fertilization. However, wheat and barley responded by considerably yield increases (wheat up to 17%: 6.14 and 7.17 t ha- 1 ; barley up to 19%: 6.19 and 7.35 t ha-1 ; for the control and the higher rate of PK, respectively).
maize ; wheat ; barley ; grain yield ; fertilization ; Phosphorus ; Potassium
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