Utjecaj sustava sjetve na prinos zrna kukuruza | Impact of seeding system on the maize grain yield

Croatian. U radu su prikazani rezultati prinosa zrna kukuruza pri različitim sustavima sjetve u 2021. godini na pokušalištu Tenja Fakulteta agrobiotehničkih znanosti Osijek. Zasijano je pet hibrida u udvojene redove na razmak od 22 cm (twin row) te na standardni način s razmakom redova od 70 cm. U standardnoj sjetvi kod hibrida H2 ostvaren je najveći prosječni prinos zrna od 13 610 kg ha-1, dok je u sjetvi u udvojene redove zabilježen prinos od 14 927 kg ha-1 ili +1317 kg više (9,67 %). Najniži prinos zrna u standardnoj sjetvi zabilježen je kod hibrida H1 od 11 088 kg ha-1. Isti hibrid u sjetvi u udvojene redove ostvario je prinos zrna od 12 496 kg ha-1 što predstavlja povećanje za +12,70 % ili +1410 kg ha-1. Kod hibrida H3 u udvojenim redovima zabilježen je prinos od 12 748 kg ha-1 što je povećanje u odnosu na standardnu sjetvu od +1676 kg ha-1 ili 15,14 %. Hibrid H4 u standardnoj sjetvi ostvario je prinos zrna od 12 088 kg ha-1 što je manje u odnosu na sjetvu u udvojene redove od -1499 kg ha-1 ili 12,40 %. Prosječno povećanje prinosa zrna kod udvojenih redova za svih 5 hibrida iznosi 12,51 % (1504,40 kg ha-1). Analizom varijance utvrđeno je da postoji visoka signifikantnost između čimbenika „hibridi“ i „način sjetve“ na prinos zrna kao i na masu zrna po klipu. Navedeni čimbenici nisu statistički značajno djelovali na ostvarenje sklopa u sjetvi. Razlike u vlažnosti zrna također su statistički značajno potvrđeni samo kod čimbenika „hibridi”

English. The paper presents the results of maize grain yield with different sowing systems in 2021 at the Tenja trial site of the Faculty of Agrobiotechnical Sciences Osijek. Five hybrids were sown in double rows (twin row) at a distance of 22 cm, and in the standard way with a row distance of 70 cm. In standard sowing, hybrid H2 achieved the highest average grain yield kg ha-1 (13 610), while in twin row sowing, a yield of 14 927 kg ha-1 or +1317 kg more (9,67 %) was recorded. The lowest grain yield in standard sowing was recorded at hybrid H1 of 11,088 kg ha-1. The same hybrid, when sown in twin rows, achieved a grain yield of 12 496 kg ha-1, which represents an increase of +12,70 % or +1410 kg ha-1. With hybrid H3 in twin rows, a yield of 12 748 kg ha-1 was recorded, which is an increase compared to standard sowing of +1676 kg ha-1 or 15,14 %. Hybrid H4 in standard sowing achieved a grain yield of 12,088 kg ha-1, which is less compared to sowing in twin rows of -1499 kg ha-1 or 12,40 %. The average yield increase in twin row sowing for all 5 hybrids is 12,51 % (1504 kg ha-1). Analysis of variance revealed that there is a high significance between the factors "hybrids" and "sowing method" on grain yield as well as grain weight per cob. The mentioned factors did not have a statistically significant effect on the realization of the set of plants in sowing. Differences in grain moisture were also statistically significant only with the factor "hybrids"