Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 2
Written by Kiril SIRAKOV, Angelina MUHOVA, Stefka STEFANOVA-DOBREVA
The study examined the effects of electromagnetic stimulation on seeds of two triticale varieties under different climatic conditions. A three-factor field trial was conducted in 2017-2018 and 2018–2019 at the Institute of Field Crops, Bulgaria. Before sowing, seeds were electromagnetically treated using controllable factors: voltage (U, kV), seed exposure time (τ, s), and stay period (T, days). The values for the electromagnetic options: E0-untreated seeds; E1 (U = 5.2 kV, τ = 24 s, T = 14 days); E2 (U = 5.0 kV, τ = 50 s, T = 7 days). During vegetation, organic and mineral fertilizers were incorporated. Agrometeorological conditions were assessed using Ivanov's coefficient and De Martonne index. Grain yield was higher for the Boomerang variety in both years. The variety and fertilization had an average effect in both periods. Electromagnetic stimulation showed a greater effect during the semi-humid conditions of 2018. In 2019, based on the impact of the interaction of the electromagnetic stimulation and the variety, an increase in grain yield for the Boomerang variety for E2 was 6.0%. In 2018, for the E1 option, a higher yield of 23.7% was reported for the Boomerang variety.
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