GRAIN YIELD OF TRITICALE VARIETIES DEPENDING ON THE FOLIAR FERTILIZATION IN THE CONDITIONS OF INCREASING NORMS OF FERTILIZATION OF THE SOIL WITH NITROGEN PUBLISHEDStefka Dobreva, H. Kirchev, Angelina Muhova None email@example.com
Abstract: In the period 2014-2017, a three-factor field experiment has been conducted in the field of Institute of field crops, Chirpan, Bulgaria. It has been studied both the independent influence of nitrogen fertilization and the combination of foliar fertilization on four triticale varieties: Kolorit (standard), Attila, Boomerang and Respect. The experiment is based on the fractional plot method in four replications with a plot size of 12 m2. Grain yields of triticale varieties are determined directly from each plot using the Wintersteiger micro combine harvester. The results are calculated to standard grain moisture of 13%. In order to establish statistically significant differences between the variants, a dispersion analysis (ANOVA) was applied, and three-factor dispersion analysis (MANOVA) was used to establish the independent action of the factors. From the study, it was found out that the combination of mineral and foliar fertilization increases the grain yield in all varieties. On average, for the three years, the highest yield was the Boomerang variety - 568.1 kg/da, which is 78.5% higher than the standard, with fertilization with nitrogen N18 and in combination with leaf fertilization. The increase in yield for other varieties compared to the standard Kolorit is: for Atilla with 66.5% and for Respect with 31.5%.
triticale, yield, fertilization
Biology applied in Agriculture