id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-72804	Varis, Anna-Liisa	Seasonal occurrence of Lygus bugs on field crops in Finland	1997	5	.pdf	application/pdf	2169	139	67	Seasonal occurrence of Lygus bugs on field crops in Finland Anna-Liisa Varis Department ofApplied Zoology, PO Box 27, FIN-00014 University of Helsinki, Finland A long term survey ofLygus populations (Heteroptera, Miridae) was carried out on eight arable crops in southern Finland. Key words: cultivated plants, growing seasons, Heteroptera, Lygus rugulipennis, Miridae ntroduction Lygus bugs occur on numerous crop and weed plants throughout the world (Graham et al. 1984).	cache/afs-72804.pdf	txt/afs-72804.txt