Effectiveness of tank mixtures for pre-sowing treatment of spring wheat seeds
The biological and economic efficiency of fungicides (Махim Plus 1,2 l/t, BisolbySun 1 l/t), plant growth regulators (Melafen 10 ml/t, Stimmunol 10 ml/t), humic acid-based fertilizers added with macro- and microelements (Humilux 5 l/t) in the course of pre-sowing seed treatment, in pure form and in mixtures, were studied. In 2016 the efficiency of Maxim Plus fungicide and its mixture with plant growth regulators was practically equal. In 2017, when Fusarium infestation of seeds predominated, the efficiency of mixtures depending on trial variants was lower by 6-11 % than in the variant with Maxim Plus fungicide application in pure form. A true gain in yields in 2016 was obtained by the following variants: Maxim Plus + Melafen, Maxim Plus + BisolbySun, Maxim Plus + Stimmunol - 8, 7,2 and 7,3 c/ha, correspondingly. In these variants the payback for 1 ruble of cost for pre-sowing seed treatment amounted 1,95, 2,37 and 1,84 times, correspondingly. In 2017 the best yielding capacity was also in the variants with mixtures of preparations: Maxim Plus + Stimmunol, Maxim Plus + Melafen Maxim Plus + Humilux. Yield gain was 6,7, 7,6, 8,7 c/ha, correspondingly, with the payback for 1 ruble of cost for pre-sowing seed treatment 1,7, 1,4 and 2,2 times, correspondingly.