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Effect of the afterglows of low pressure Ar/N 2 ‐O 2 surface‐wave microwave discharges on barley and maize seeds
Author(s) -
Szőke Csaba,
Nagy Zoltán,
Gierczik Krisztián,
Székely András,
Spitkól Tamás,
Zsuboril Zsuzsanna T.,
Galiba Gábor,
Marton Csaba L.,
Kutasi Kinga
Publication year - 2018
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201700138
Subject(s) - germination , afterglow , microwave , fusarium , agronomy , poaceae , horticulture , chemistry , materials science , analytical chemistry (journal) , biology , physics , chromatography , gamma ray burst , quantum mechanics , astronomy
Non‐infected and infected cereal crops, respectively, are treated in the afterglow of Ar/N 2 ‐O 2 surface‐wave microwave discharges at 2–8 mbar pressure. It is shown, that the germination and vigour of non‐infected seeds are not significantly effected, when barley is treated max 120 s at 2 mbar and maize 240 s at 4 mbar. On the other hand, seeds can be disinfected from the germination inhibitors Fusarium graminearum and Fusarium verticillioides . The most efficient treatment, which also increases the germination of infected seeds above 80%, for barley is the 3 min Ar‐20%O 2 afterglow at 4 mbar, while for maize the 4 min Ar‐20%O 2 + 2 min N 2 ‐2%O 2 at 8 mbar. The high NO content mixtures and the heating of seed surface by the recombination of O and N‐atoms inhibit barley germination.