Population dynamics of the sugarcane Planthopper Pyrilla perpusilla Walker (Homoptera: Lophopidae) in the wet zone of Sri Lanka

dc.contributor.author	Ganehiarachchi G.A.S.M.
dc.contributor.author	Fernando, I.V.S.
dc.date.accessioned	2015-04-29T07:40:38Z
dc.date.available	2015-04-29T07:40:38Z
dc.date.issued	2000
dc.identifier.citation	Ganehiarachchi G.A.S.M. and Fernando I.V.S. (2000). Population dynamics of the sugarcane Planthopper Pyrilla perpusilla Walker (Homoptera: Lophopidae) in the wet zone of Sri Lanka. Tropical Science 40 144-153.	en_US
dc.identifier.uri	http://repository.kln.ac.lk/handle/123456789/7195
dc.description.abstract	In the wet zone of Sri Lanka, a field experiment was conducted to study the population dynamics of the sugar cane planthopper (Pyrilla perpusilla). The numbers of eggs, nymphs and adults were high in July, August and Oct. 1993, April and Sep. 1994, and Feb. and March 1995. Population size showed a negative correlation with rainfall and humidity and positive correlation with minimum temperature. A hymenopteran parasitoid (Parachrysocharis javensis) and 9 species of predators of the planthopper were recorded in the plot. The main factors responsible for the fluctuation of the planthopper population were the egg parasitoid, the predators and the amount of rainfall.
dc.language.iso	en	en_US
dc.publisher	Journal of Tropical Science	en_US
dc.title	Population dynamics of the sugarcane Planthopper Pyrilla perpusilla Walker (Homoptera: Lophopidae) in the wet zone of Sri Lanka	en_US
dc.type	Article	en_US