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	Authors Year Title Journal
8926	Sharma, S., M.P. Misra, and C.P.M. Tripathi. 1991 Influence of temperature and humidity on the percentage viability of the eggs of Epiricania melanoleuca (Fletcher) (Lepidoptera: Epipyropidae). Biological Agriculture and Horticulture: An International Journal for Sustainable Production Systems 7(4): 333-337.
6882	Li, G.X., J.T. Wu, J. T. and S.S. Chen. 1991 Studies on the resistant mechanisms of rice varieties having moderate resistance to the brown planthopper, Nilaparvata lugens (Stal). Journal of the South China Agricultural University 12: 56-65.[Chinese with English abstract]
6901	Salim, M. and R.E. Saxena. 1991 Nutritional stresses and varietal resistance in rice: effects on whitebacked planthopper. Crop Protection 31: 797-805.
7455	Koyama, K. 1991 Parasitizatism by the Dryinind wasp, Haplogonatopus atratus Esaki et Hashimoto and predation on the white-backed planthopper Sogatella furcifera. Proceedings of the Kanto-Tosan Plant Protection Society 38: 153-154. pdf
7759	Baehaki, S.E. 1991 Application of Metarhizium anisopliae pathogen on brown planthopper in North Sumatra. Balai Penelitian Tanaman Pangan Bogor- Edisi Khusus 2: 91-97.[Indonesian]
7760	Baehaki, S.E. and D. Sukarna. 1991 Effect of predators and insecticides on brown planthopper population development in rice field. Balai Penelitian Tanaman Pangan Bogor- Edisi Khusus 2: 64-72.[Indonesian]
7761	Bahagiawati, A.H. and A.A.N.B. Kamandalu. 1991 Research of rice varieties resistant to brown planthopper (Nilaparvata lugens Stal.). Balai Penelitian Tanaman Pangan Bogo- Edisi Khusus 2: 32-36.[Indonesian]
7779	Chen, D.M., Q.C. Yuan, and Q.H. Gu. 1991 Nonpreference and antibiosis evaluation of Nilaparvata lugens in japonica and indica rice varieties. Acta Agriculturae Shanghai 7(2): 10–15.
7792	Cheng, J.A., Z.R. Zhu, L.G. Zhang, and Q.G. Fan. 1991 Simulation study on effects of immigration population on population dynamics of brown planthopper. Chinese Journal of Rice Science 5(4): 163-168. pdf
7841	Choo, H.Y. 1991 Ecological study of Agamermis unka, a nematode parasite of brown planthopper Nilaparvata lugens (Homoptera : Delphacidae). Research Reports of the Rural Development Administration (Agri. Inst. Coop.) 33: 185-191.
7869	Fan, Y.D. and C.Y. Lu. 1991 The experiment on rice planthopper by different spraying method of Applaud and other insecticides. Insect Knowledge 28(5): 261-263.
7913	Heong, K.L. 1991 Modeling in the analysis of pest management strategies. IRRI Research Paper Series no. 151.
7914	Heong, K.L., G.B. Aquino, and A.T. Barrion. 1991 Arthropod community structures of rice ecosystems in the Philippines. Bulletin of Entomological Research 81(4): 407-416.
7932	Huang, C.W. and B.C. Feng. 1991 Influence of the rice growing stages on the population increase of white-backed planthopper. Acta Agriculturae Zhejiangensis 3(1): 9–13.
8003	Iitomi, A., and T. Kishi. 1991 Damage of rice (Oryza sativa) plant in the late stage of ripening injured by the brown rice planthopper, Nilaparvata lugens Stal (Homoptera: Delphacidae) in Akita prefecture, 1990. Annual Report of the Society of Plant Protection of North Japan 42: 85-87.
8008	Ishiguro, K. and M. Yanase. 1991 Effects of feeding by white-backed planthopper, Sogatella furcifera Horvath, small brown planthopper, Laodelphax striatellus Fallen and brown rice planthopper, Nilaparvata lugens Stal for quality on brown rice. Annual Report of the Society of Plant Protection of North Japan 42: 88-90.
8078	Abe, T. and K. Koyama. 1991 Embryonic development and selective oviposition of a dryinid wasp, Haplogonatopus atratus Esaki et Hashimoto (Hymenoptera : Dryinidae). Japanese Journal of Applied Entomology and Zoology 35(1): 57-63.[Japanese] pdf
8085	Kartohardjono, A., T. Tersyana, T., R.W. Atmadja, and Nursasongko. 1991 Role of Cyrtorhinus sp. predator as biological control of brown planthopper in rice field. In: J. Sujitno, D. Kilin, Hs. Suprapto, and U. SutrisnoGunara, (eds.). Research on brown planthopper (Nilaparvata lugens Stal.) in 1987/88. Balai Penelitian Tanaman Pangan Bogor. Edisi Khusus 2. Bogor, Indonesia. Pp. 54-63
8092	Khan, M.R., M. Ahmad, S. Ahmad, M. Latif, Latif-ur-Rehman, and S. Ali. 1991 Some studies on varietal resistance of rice to leaf and planthoppers. Sarhad Journal of Agriculture 7(1): 83-89.
8093	Khan, M.S. and K.S. Kushwaha. 1991 Assessment to yield losses caused by white backed planthopper Sogatella furcifera (Horvath) various growth stages. Indian Journal of Entomology 53(1): 102-107.
8097	Kilin, D., and T. Sumpena. 1991 Evaluation of integrated pest control of brown planthopper. In: J. Sujitno, D. Kilin, Hs. Suprapto, and U. SutrisnoGunara, (eds.). Research on brown planthopper (Nilaparvata lugens Stal.) in 1987/88. Balai Penelitian Tanaman Pangan Bogor. Edisi Khusus 2. Bogor, Indonesia. Pp.73-75.
8099	Kim, D.H., G.H. Lee, J.D. So, J.H.Yuh, and J.H. Kim. 1991 Resistance aspects on different growth stages and field resistance of rice varieties to brown planthopper, Nilaparvata lugens Stal. (Homoptera : Delphacidae). Research Reports of the Rural Development Administration 33(3): 33-39.
8139	Laba, I.W. 1991 Predation of Cyrtorhinus lividipennis Reuter on eggs of planthoppers in rice. Master’s Thesis, University of the Philippines at Los Baños. Los Baños, Laguna, Philippines. thesis pdf
8158	Kwon, O.K., B.H. Song, H.M. Park, and Y.H. Jeong. 1991 Identification of insecticidal ingredient in castor oil plant against brown planthopper. Research Reports of the Rural Development Administration (Crop Protection) 33(2): 74–79.
8164	Laba, W.and T. Sumpena. 1991 Effects of insecticides on resurgencies and predators of brown planthopper (Nilaparvata lugens Stal.). In: J. Sujitno, D. Kilin, Hs. Suprapto, and U. SutrisnoGunara, (eds.). Research on brown planthopper (Nilaparvata lugens Stal.) in 1987/88. Balai Penelitian Tanaman Pangan Bogor. Edisi Khusus 2. Bogor, Indonesia. Pp. 86-90.

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