Influences of irrigation and n fertilization on maize (Zea mays L.) properties

The maize grain yield and yield components showed statistical differences between the 2000 growing season (10.64 t ha−1) and 2002 (12.14 t ha−1). Irrigation variant A1 (keeping soil water from 80 to 100% FWC) gave the best results in yield and in all the researched components. Medium (B2) and higher nitrogen level (B3) also gave the best results in the research except grain/ear ratio which had the best results with B1 (100 kg N ha−1). The highest level of irrigation (80–100% FWC) and nitrogen level (200 kg N ha−1) did not give statistically significant higher yield and yield components. Applying 150 kg N ha−1 in the year 2000 also proved environmentally suitable quantity of nitrogen on the researched soil since the higher level of N (B3) did not increase the yield.