EFFECT OF THE COMBINATION OF BIOLOGICAL PREPARATIONS WITH NITROGEN FERTILISERS ON MAIZE GRAIN YIELD
Keywords:maize (Zea mays L.), fertilization, nitrogen fertilizers, biological preparations, grain yield, elements of yield structure
The field experiment was performed in 2021 April - October at VMU Agricultural Academy Experimental Station. The soil was a deeper gleyic saturated loam (PLb-g4 Endohipogleyic-Eutric Planasol - Ple-gln-w).
The object of the study is common corn (Zea mays L.).
The aim of the study was to evaluate the influence of the studied biological preparations on the background of N140 fertilization on maize grain yield and yield structure elements.
Objectives of the study: to determine the yield of maize grain and the elements of the yield structure: productivity of one plant, mass of 1000 grains, number of grains in the bulb.
Field trials were performed in 3 replicates, with fields arranged randomized. To process the research data by the method of analysis of variance, using the computer program ANOVA from the software package: "Selection".
The study found that the significantly highest (8.7 t ha-1) yield of maize grain was when fertilized with KAS in combination with nitrogen-fixing bacteria and humic acid preparations. The tested combinations of KAS and biological preparations significantly increased the yield of maize grain, but no significant differences were found when comparing the studied preparations. The combination of nitrogen bacteria and humic acids with nitrogen fertilizer KAS with N140 fertilization significantly increased the productivity of the maize plant compared to the fertilization of KAS without nitrogen bacteria and humic acids. No significant differences were found when comparing the biological preparations tested. The combinations of the tested preparations did not have a significant effect on the amount of corn grain in the cob.