The influence of nitrogen fertilization on soybean important agronomic characteristics

Abstract

The influence of different amounts of nitrogen (30, 60 and 90 kg ha-1) on important soybean yield components (number of fertile nodes, number of pods per plant and weight of 1.000 grains), was examined in this paper. Experiment was carried out at two different localities (Maize Research Institute Zemun Polje and the village Kloka-lower Jasenica) in 2009. Experiments were carried out through field plot trials, using split-plot in 4 replications. The results show that, on average, for both soil types, number of pods per plant and weight of 1000 grains increased using nitrogen dose of 60 kg ha-1 for 5.2 and 3.8% and the number of fertile nodes to the variant of fertilization with 30 kg ha-1 of nitrogen for 3.8%. The amount of 90 kg ha-1 N gave lower values of the number of pods per plant compared to the control.

U radu je ispitivan uticaj različitih količina azota (30; 60 i 90 kg ha-1) na neke značajnije komponente prinosa soje (broj etaža mahuna po biljci, broj mahuna po biljci i masa 1.000 zrna). Istraživanja su obavljena na dva različita lokaliteta, Institut za kukuruz u Zemun Polju i selo Kloka-donja Jasenica u 2009. godini. Eksperimenti su izvedeni putem poljskih mikroogleda, metodom razdvojenih parcela (split-plot) u 3 ponavljanja. Dobijeni rezultati pokazuju da su se, u proseku za oba tipa zemljišta, broj mahuna po biljci i masa 1.000 zrna povećavali upotrebom azota do 60 kg ha-1 za 5,2 odnosno 3,8%, a broj etaža mahuna po biljci do varijante đubrenja sa 30 kg ha-1 za 3,8%. Varijanta đubrenja sa 90 kg ha-1 dala je niže vrednosti broja mahuna po biljci u odnosu na kontrolnu varijantu.