Warm water seed-treatment realised in the practice for the control of the seed-borne snow mould in summer-wheat
1998
Winter, W. | Baenziger, I. | Rueegger, A. | Krebs, H. (Eidg. Forschungsanstalt fuer Agraroekologie und Landbau Reckenholz, FAL, Zuerich (Switzerland))
In Switzerland, one of the most important seed-borne fungal pathogens of wheat is Gerlachia nivalis (=Fusarium nivale, snow mould). A warm water seed treatment under practical conditions against G. nivalis-naturally infected summer-wheat seed, was compared with a laboratory warm water treatment and a chemical dressing in field and laboratory experiments. For the warm water treatment under practical conditions seed lots of 350 kg were dipped into water at 45 deg. C in a bin for cheese production during two hours, then air-dried back at 40 deg. C during five hours. For chemical dressing Beret 050 FS (e,8 % fenpiclonil) was applied with a Hege-spraying seed-treatment machine. Warm water treatment under practical conditions was as efficacious against G. nivalis as the laboratory warm water treatment and the chemical one. All seed treatments had no damaging effect on the germination of seeds. It was concluded that for organic farming, warm water treatment of wheat seeds is an alternaitve to the chemical seed dressing against G. nivalis.
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