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¹ Ankara Üniversitesi Ziraat Fakültesi Bitki Koruma Bölümü, Dışkapı/ Ankara, Turkey
² Department of Plant Soil and Insect Sciences, University of Wyoming Laramie, USE - Three forage Brassica species were evaluated for their growth and adaptability to the Rocky Mountain region. Brassicas were grown in fields infested with a Phytophthora disease previoıısly observed on kale (Brassica oleracea var. Acephala) Metalaxyl treatmıent did not affect Brassica yields signifıcantly. Although pest problems were detected, Brassica crops tolerated low temperatures and produced excellent yields ( up to 9.90 Mg/ha). The Phytophthora isolates from Brassica, which were identifed as Phytophthora megasperma, differed from the alfalfa (Medicago sativa) pathogen Phytophthora megasperma f.sp. medicaginis which appeared to be host specifıc. Keywords : Brassica oleracea var. acephala; Phytophthora megasperma; isolate