TY JOUR TI Allelopathic effect of Polygonum aviculare L. extracts on germination and early stages of barley ontogenesis under salt stress KW Polygonum aviculare L. KW Hordeum vulgare L. KW allelopathic effect KW sprouts KW salt stress KW seed germination KW biomorphological indicators JO INTERNATIONAL AGRICULTURAL JOURNAL AU Gordeeva, I.V. PY 2026 IS 0 PB Electronic science