| NUKLEONIKA 2011, 56(4):357-362
EFFECTIVENESS OF ELECTRON BEAM IRRADIATION
IN THE CONTROL OF SOME SOILBORNE PATHOGENS
Leszek B. Orlikowski1, Wojciech Migdał2, Magdalena Ptaszek1, Urszula Gryczka2
1 Institute of Horticulture, 1/3 Konstytucji 3 Maja Str., 96-100 Skierniewice, Poland
2 Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
Electron beam (EB) irradiation was tested against Botrytis cinerea, Pythium ultimum and Phytophthora citricola the most dangerous pathogens causing stem and root rot of seedlings, cuttings and older plants. In the laboratory trials cultures of 3 species were irradiated with doses 0 (control), 1.5, 3.0, 4.5 and 6.0 kGy whereas peat was treated with 10, 15 and 25 kGy. P. citricola was the most sensitive species for irradiation. In greenhouse trials 15 kGy irradiation of peat protected chrysanthemum cuttings against B. cinerea and P. ultimum as well as rhododendron young plants against P. citricola. Irradiation of peat did not influence the growth and development of the tested plants.
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