engleski

Nitrogen leaching in irrigated and N fertilizing conditions

The field experiment was set up at the trial field of Agricultural institute in Osijek as split split-plot scheme in year 2012. The goal of study was to evaluate the effect of different irrigation and nitrogen fertilizers levels on nitrate- nitrogen leaching in maize filed. The experiment included three irrigation levels (A1= non irrigated ; A2 = 60 to 100 field water capacity (FWC) ; A3 = 80 to 100 FWC) and three nitrogen fertilizers level (B1 = 0 kg N/ha, B2 = 100 kg N/ha, B3 = 200kg N/ha) with two replications. Lysimeters were set up at 80 cm depth on each irrigation and nitrogen fertilizers level (A, B, AxB). The water samples from lysimeters were taken three times during vegetation, after irrigation or precipitation. Maximum NO3¯ leaching out soil layer was 79.28 mg NO3¯ on plots irrigated with the highest amount of water (A3 = 80 to 100% FWC) and fertilized with maximum N (200 kg N/ha).

lrrigation ; N fertilizers ; nitrogen leaching ; lysimeters

The results published in this scientific paper are a part of research published as thesis of graduate student.