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- Title
Fizinių veiksnių ir cheminių priemonių svarba išvengiant vasarinių miežių Ligų.
- Authors
Dabkevičius, Zenonas; Sirvydas, Povilas Algimantas; Sinkevičienė, Jolanta; Šaluchaitė,, Aurelija; Vasiliauskaitė, Ieva
- Abstract
This article deals with a field and laboratory investigation of physical and chemical spring barley seed treatment against seed-borne diseases during the period 2005-2006. The influence of pre-sowing spring barley seed treatment with the chemical agents Raxil 60 (active igredient tebuconazol), 0.5 l t-1 potassium lignohumate (100 ml t-1) and physical methods such as water steam (2-, 4-, 6-second thermal impulses), electrostatic field (60 s, 45 kV) and ultraray (600 s, 125 Wm-2), seed, root collar, leaf and spike diseases, productivity were investigated. The influence on spring barley root rot, net blotch, leaf stripe and smut disease incidence and severity was studied. Research under laboratory conditions showed that all physical methods, except for electrostatic field, reduced seed infections, but the best protection from pathogens was given by Raxil 60 and 6-second humid water steam thermal impulse treatment. Raxil 60 and water steam 2-, 4-, 6-second thermal impulses decreased barley sprout infection with root rot diseases most effectively. At late growth stages barley was effectively protected only by Raxil 60 and 6-second water steam thermal treatment. Treatment against net blotch was not so effective. All the tested measures decreased barley infection with smuts, but most effective were Raxil 60 (biological efficacy 100%) and 4-, 6-second water steam thermal impulses (56.6-66.6%). Physical seed treatment increased barley productivity by 0.19-0.22 t ha-1.
- Subjects
BARLEY; PLANT protection; PLANT diseases; SEED-borne phytopathogens; SEED disinfection
- Publication
Agricultural Sciences / Zemès ukio Mokslai, 2008, Issue 4, p28
- ISSN
1392-0200
- Publication type
Article