The significance of soil microorganisms as a limiting factor in infection of clover by Sclerotinia trifoliorum erikss. at different times of the year

by Anna-Marja Halkilahti
Published 1964-01-01

The survival of sclerotia of Sclerotinia trifoliorum erikss. on the soil and the occurrence of clover rot in various years

by Anna-Marja Halkilahti
Published 1962-01-01

On the effects of the club root fungus (Plasmodiophora brassicae woron) and winter frost on the overwintering of winter turnip rape

by Onni Pohjakallio, Anna Marja Halkilahti, Simo Antila
Published 1959-01-01