Maize hybrids from different maturity groups over sowing densities

Abstract

In the present study, the grain yield of maize hybrids from different maturity groups at different crop density. Research were carried out 2012 on the site of Sremska Mitrovica. Observed hybrids are characterized by a high genetic potential for yield and belong to different groups (FAO 400, 500 and 600). The difference in yields between maturity groups were statistically significant. The highest average yield was produced by FAO 500. The highest yields were obtained using FAO 600 and NS FAO 500 (6120 kg ha-1, 6030 kg ha-1) at medium density crop of 64 935 plants per hectare. Effect of plant density, unfavorable weather conditions in the year, was such that the average yield of maize increased to medium densities, after which there was a decrease in yield.

U radu je proučavan prinos zrna kukuruza kod NS hibrida različitih grupa zrenja pri različitim gustinama useva. Ispitivanja su vršena 2012. godine, na lokalitetu Sremska Mitrovica. Posmatrani hibridi kukuruza odlikuju se visokim genetskim potencijalom rodnosti i pripadaju različitim grupama zrenja (FAO 400, 500 i 600). Razlike u prinosima između grupa zrenja bile su statistički značajne. Najveći prosečan prinos zrna ostvario je hibrid FAO 500. Najveći prinosi ostvareni su sa hibridima FAO 600 i FAO 500 (6120 kgha-1, 6030 kgha-1) pri srednjoj gustini od 64 935 biljaka po hektaru. Efekat gustine useva, u klimatski nepovoljnoj godini, bio je takav da su prosečni prinosi zrna hibrida kukuruza rasli do srednje ispitivane gustine, nakon čega je došlo do smanjenja prinosa.