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	Authors Year Title Journal
4065	Shepard, B.M., E.R. Ferrer, J. Soriano, and P.E. Kenmore. 1989 Presence/absence sampling of planthoppers and major predators in rice. Journal of Plant Protection in the Tropics 6(2): 113-118.
4089	Siahmazgi, A.S. . 1989 Biological studies on Dicondylus indianus (Olmi) (Hymenoptera: Dryinidae), with particular reference to foraging behaviour. Doctoral Dissertation, College, Cardiff. Doctoral Thesis [Available from BLDSC, Ref No DX89855.]
4095	Singh, B.P. 1989 Studies on the white-back plant hopper Sogatella furcifera H. of paddy at Lakhaoti (Bulandshahr). Bulletin of Entomology 30(1): 129-131.
4136	Sogawa, K. and T. Watanabe. 1989 Outline of long-term yearly fluctuations of the rice planthopper occurrence from light-trap data at Kyushu National Agricultural Experiment Station. Proceedings of the Association for Plant Protection of Kyushu 35: 65-68. pdf
4207	Strong, D. R. 1989 Density independence in space and inconsistent temporal relationships for host mortality caused by a fairyfly parasitoid. Journal of Animal Ecology 58(3): 1065-1076.
4327	Teakle, D.S., S. Hicks, R.M. Harding, R.S. Greber, and R.G. Milne. 1989 Pangola stunt virus infecting pangola grass and summer grass in Australia. Australian Journal of Agricultural Research 39(6): 1075-1083.
4341	Thomas, M.C. 1989 Insect detection - a cixiid planthopper, Bothriocera datuna Kramer. Tri-Ology 28(3): 5.
4398	Tsaur, S.C. 1989 A new species of Oliarus from Taiwan (Homoptera: Fulgoroidea: Cixiidae). Bulletin of the Institute of Zoology Academia Sinica (Taipei) 28(3): 171-174. pdf
4399	Tsaur, S.C. 1989 Cixiidae of Taiwan, part 4. Stenophlepsini with description of a new species. Bulletin of the Institute of Zoology Academia Sinica (Taipei) 28(2): 81-85.
4400	Tsaur, S.C. 1989 Two flatid nymphs from Taiwan (Homoptera: Fulgoroidea). Journal of Taiwan Museum 42(1): 31-36.
4418	Tsurumachi, M. and K. Yasuda. 1989 [Long-distance immigration and infestation of the rice planthoppers and the rice leaffolder in Okinawa.] Research Reports on Tropical Agriculture (Tsukuba) 66: 50-54. [Japanese]
4431	Uthamasamy, S. 1989 Influence of weather factors on light-trap catches of green leafhopper (Nephotettix virescens) and brown planthopper (Nilaparvata lugens) on rice (Oryza sativa). Indian Journal of Agricultural Sciences 59(5): 319-321.
4469	Van Stalle, J. 1989 A revision of the African species of Achaemenes Stal, 1866 (Homoptera, Cixiidae). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique Entomologie 58: 5-23.
4470	Van Stalle, J. 1989 Description of Flachaemus, a new African genus related to Achaemenes Stal (Homoptera, Cixiidae). Biologisch Jaarboek 56: 26-37.
4471	Van Stalle, J. 1989 The Pentastirini of New Guinea, a review and descriptions of five new species (Homoptera, Cixiidae). Bulletin de l'Institut Royal des Sciences Naturelles de Belgique Entomologie 59: 173-182.
4484	Velusamy, R. 1989 Resistance of wild rices, Oryza spp. , to the whitebacked planthopper Sogatella furcifera (Horvath) (Homoptera: Delphacidae). Crop Protection 8(4): 265-270.
4485	Velusamy, R. 1989 Genes conditioning resistance to brown planthopper (BPH). International Rice Research Newsletter 14(1): 12-13. pdf
4619	Wang, H.Q and H.M. Yani. 1989 Explorations on the community of spiders and insects in the late rice fields. Acta Scientiarum Naturalium Universitatis Normalis Hunanensis 12(1): 73-80.
4732	Wilson, M.R. 1989 The planthopper family Achilixiidae (Homoptera, Fulgoroidea): a synopsis with a revision of the genus Achilixius. Systematic Entomology 14(4): 487-506.
4819	Woods, C.A., (ed.). 1989 Biogeography of the West Indies : past, present, and future. Sandhill Crane Press, Gainesville, Florida. -
4853	Xiao, Y.F. and C.W. Tu. 1989 Studies on the resistance of japonica rice varieties to white-backed planthopper Sogatella furcifera (Horvath). Acta Entomologica Sinica 32(3): 286-292. pdf
4865	Yadav, K.P. and A.D. Pawar. 1989 New record of dryinid parasitoid of brown plant hopper, Nilaparvata lugens Stal. and white-backed plant hopper, Sogatella furcifera Horv. Entomon 14(3-4): 369-370.
4876	Yang, C.T. 1989 Delphacidae of Taiwan II (Homoptera: Fulgoroidea). NSC Special Publications 6: 1-334.
4877	Yang, C.T. 1989 Collected papers on Fulgoroidea of Taiwan. Taiwan Museum Special Publication Series 1010-1683(8): 1-204.
4894	Yan, Y.J. and Z.F. Wu. 1989 Predation and simulation model of dwarf spider to brown planthopper. Journal of Fujian Agricultural College 18(3): 289-294.

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