The resistance of certain Finnish red clover varieties to the stem nematode Ditylenchus dipsaci (Kühn) Filipjev - Roivainen, Osmo; Tinnilä, Aulis (Agricultural Research Centre, 1963)
Keywords: Ta; tuhoeläimet; varsiankeroinen; Ditylenchus dipsaci; torjunta; puna-apila; Trifolium pratense