engleski

Response of maize to liming and ameliorative phosphorus fertilization

The field experiment of liming (0 and 10 t ha-1 of powdered hydrated lime) and phosphorus fertilization (monoammonium phosphate or MAP: 12% N + 52% P2O5) were conducted on Mahovljani acid soil in November 2008. The rates of P on basic fertilization were as follows: 0, 500, 1000 and 1500 kg P2O5 ha-1. Basic plots of liming and P fertilization were 640 m2 and 40 m2, respectively. The average yield of maize grain was 8.03 t ha-1. The yield of maize was increased by liming 32% (3-year averages: 6.90 and 9.12 t ha-1, for the control and liming, respectively) with differences of liming effects among the years by 18% to 47%. The differences of yields were nonn-significant among three rates of P applications, while increases of yields were 5% (2009), 6 % (2010) and 18% (2011) respectively by comparing these treatments with the control. Protein and oil contents were independent on liming and P fertilization in maize grain, while effects of these treatments on starch contents found only in 2009 growing season: as affected by liming starch contents wereincreased by 1.3%, while P fertilization resulted by decreases of starch contents by0.9%.

liming ; phosphorus fertilization ; maize ; grain yield ; grain quality

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