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5192180 
Technical Report 
Lyfe cycle of hazelnut big bud mite Phytoptus avellanae (Nal.) (Acarida: Eriophyoidea) and the results of its control 
Petanovic, R; Dobrivojevic, K; Boskovic, R 
1989 
40 
4 
433-442 
scr 
BIOSIS COPYRIGHT: BIOL ABS. Hazelnut big bud mite Phytoptus avellanae (Nal.) is a well known and widespread pest in Eurasia, North America and Australia. Many investigations were carried out to improve the knowledge concerning its relatively complicated life cycle. Observations were made on mite-infested hazelnut buds from susceptible trees in western Serbia (Yugoslavia) in the course of a two year period starting from 1977 in order to clarify the life cycle of the mite. Only buds caused by P. avellanae were found. No Cecidophyopsis vermiformis causing the so-called "summer big buds" were found. The migratory population consisted exclusively of nymphs and the migration period lasted two months. The quiescent state lasted to mid August and in this period buds were normal in size. Mites started intensive reproduction at the end of summer, and a population maximum was reached in the spring of the following year. Sucessful control was achieved by two applications of endosulfan during migration. Our re