id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-71485	Pohjakallio, Onni; Halkilahti, Anna Marja; Antila, Simo	On the effects of the club root fungus (Plasmodiophora brassicae woron) and winter frost on the overwintering of winter turnip rape	1959	9	.pdf	application/pdf	2725	139	73	In two of the experiments the ratio of club root diseased plants was studied in the autumn (Table 1); the number of plants examined was 2770 in 1950 and 1735 in 1952. According to Haavisto (3, 4), Valle (11), Breitenstein (2), Jamalainen (6, 7), and Pohjakallio & Salonen (10) the overwintering of winter turnip rape in Finland is threatenedby low temperaturefungi, winter frost, soil frost, ice scorch and surface water; in addition, the larvae of the cabbage root fly ( Hylemyia brassicae) can reduce its winterhardiness.	cache/afs-71485.pdf	txt/afs-71485.txt