Využití kapalného hnojiva DAM-390 k přihnojení kukuřice během vegetace

The diploma thesis deals with the observation of the maize. The quantitative parameters of the maize, variety KWS 9361 fertilized by nitrogen liquid fertilizer DAM - 390 were observed and evaluated during one year field experiment. The base level of 156 kg N.ha-1 was applied in all variants before the start of experiment. Nitrogen fertilization was used separately or in combination with a weeder as well. Variants 3 - 6 were subsequently fertilized with extra amount of 39 kg N.ha-1 to the total level of 195 kg N.ha-1 and compared to variant 1, respectively with variant with usage of weeder without any extra fertilization (variant 2). The grain yield increased in all variants in comparison to variant 1. The highest numbers of collected data were found out in connection with variant 4. The yield ranged between 10.54 and 11.94 t.ha-1. The significant differences among the variants were proved after the determination of dry matter, N content during the growing period, thousand grain weight, and starch content of collected plants