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Undersegelse af havrealens udbredelse og betydning


, : Undersegelse af havrealens udbredelse og betydning. Beret-ning om Faellesforseg in Landbo- og Husmandsforeningerne, Odense, 87-94

Soil samples from variety trials in different parts of Denmark were investigated in 1959-61 for the occurrence of species of Heterodera. In a few samples the beet nematode only was found and in others mixed beet and oat nematodes occurred but H. schachtii was less common than expected. H. trifolii was found in a surprisingly large number of samples; oat nematodes were found in nearly all samples. Sandy soils from west and central Jylland may be an exception.

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