The effect of the application of liquid fertilizer Mg-Titanit (MgTi) containing titanium in the form of titanium ascorbate on creation of aboveground phytomass dynamics, total chlorophyll content in leaves and yield grain and straw of winter wheat was investigated in a small plot field trial (20 m2 per one plot) realized on the haplic chernozem (48o42´ N, 17o70´ E – western Slovakia) during two farming years (2010/2011 and 2011/2012). The experiment consisted of 5 treatments (0; 2xTi0.2; 3xTi0.2; 2xTi0.4; 3xTi0.4). 0 – control treatment without MgTi fertilizer; 2xTi0.2 – two applications of MgTi in the dose of 0.2 l.ha-1; 3xTi0.2 – three applications of MgTi in the dose of 0.2 l.ha-1; 2xTi0.4 – two applications of MgTi in the dose of 0.4 l.ha-1; 3xTi0.4 – three applications of MgTi in the dose of 0.4 l. ha-1. The fertilizer was applied in the spring during two, or three different growth stages: BBCH 29, BBCH 32, BBCH 55. The plant sampling was carried out two or three weeks after spraying by the fertilizer (BBCH 32, BBCH 55, BBCH 65). The results show that both first and second (repeated) application of Mg-Titanit stimulated the formation of the aboveground phytomass of winter wheat and it tended to increase the content of the total chlorophyll in leaves. A higher one-off application dose (0.4 l.ha-1) had more positive effect on the formation of the aboveground phytomass than a lower one-off dose (0.2 l.ha-1). The effect of the third dose was not positive. The increased total dose of Mg-Titanit led to the increased yield of wheat grains up to the total dose 0.8 l.ha-1. The highest yield of grain and straw was achieved with the total dose 0.8 l.ha-1, i.e. after two applications of Mg-Titanit in the dose of 0.4 l.ha-1. The dose of 1.2 l.ha-1 (3 x 0.4 l.ha-1) did not increase the grain and straw yield in comparison with the dose of 0.8 l.ha-1. However, the grain and straw yield was higher with the given dose of Mg-Titanit than in the variants with the total doses of 0.4 and 0.6 l.ha-1. From the aspect of the quantity of grain and straw yield and nitrogen content in the wheat grain the better parameters were achieved when the application dose of Mg-Titanit was 0.4 l.ha-1 in comparison with the dose of 0.2 l.ha-1, regardless there carried out two or three applications.

chlorophyll, fertilizer, titanium, winter wheat

Presentation: oral