Use of ultraviolet for pre-sowing seed treatment
https://doi.org/10.26897/2687-1149-2024-5-59-65
Abstract
Modern methods of pre-sowing seed treatment disinfect seeds, increase yield and plant resistance to adverse environmental factors, and stimulate plant immunity. Among the methods of electromagnetic impact on bioobjects, irradiation of seeds with ultraviolet light is simple, energy-efficient, economically beneficial and environmentally safe. The research aimed to study the effect of UV irradiation for pre-sowing treatment of thuja seeds and empirically determine the effective dose of UV irradiation. To maintain the required UV irradiation dose, the authors developed a digital control system on ATMEGA128A microcontroller (ATMEL). The working area of a 12 × 12 UV matrix consisting of 200 UV LEDs was 144 cm2. The distance from the UV LEDs to the irradiated seeds was about 2 cm. The UV dose of the matrix was controlled by monitoring the voltage drop on the NSL-19M51 photoresistors. The irradiance of the LEDs in the UV-A (UV-A) zone corresponded to 98%. In each series, 100 seeds of thuja occidentalis were irradiated; the experiments were repeated four times. The authors studied UV irradiation doses of 2 kJ/m2, 3 kJ/m2, and 4 kJ/m2. Seeds of thuja occidentalis without UV irradiation treatment were used as a control. The effective dose of UV-irradiation of seeds was determined empirically. The determined UV irradiation dose of 2 kJ/m2 is able to increase seed germination energy by 12.8% as compared to the control. Statistical processing of empirical data showed satisfactory accuracy of the conducted experiments. The accuracy index of the experiment amounted to P=1.76%±0.65%, for the control (without UV irradiation) – P=1.33±0.47%.
About the Authors
N. P. Kondrateva
Udmurt State Agrarian University
Russian Federation
Russian Federation
Nadezhda P. Kondrateva, DSc (Eng), Professor
426069, Izhevsk, Studencheskaya Str., 11
V. F. Storchevoy
Moscow Aviation Institute (National Research University)
Russian Federation
Russian Federation
Vladimir F. Storchevoy, DSc (Eng), Professor
Moscow
R. G. Bolshin
Russian State Agrarian University – Moscow Timiryazev Agricultural Academy
Russian Federation
Russian Federation
Roman G. Bolshin, CSc (Eng), Associate Professor
49, Timiryazevskaya Str., Moscow 127434
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Review
For citations:
Kondrateva N.P., Storchevoy V.F., Bolshin R.G. Use of ultraviolet for pre-sowing seed treatment. Agricultural Engineering (Moscow). 2024;26(5):59-65. (In Russ.) https://doi.org/10.26897/2687-1149-2024-5-59-65
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