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The role of biodiversity in the dynamics and management of insect pests of tropical irrigated rice—a review

Published online by Cambridge University Press:  10 July 2009

M.J. Way  and
K.L. Heong
M.J. Way*
Affiliation:
Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, UK
K.L. Heong
Affiliation:
Entomology and Plant Pathology Division, International Rice Research Institute, Los Baños, Philippines
*
Professor Michael J. Way, Department of Biology, Imperial College of Science, Technology and Medicine, Silwood Park, Ascot, Berks, SL5 7PY, UK.
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Abstract

Biodiversity relevant to pest management of tropical irrigated rice pests is discussed in terms of variation within rice plants, rice fields, groups of rice fields and rice associated ecosystems. It is concluded that, in the unique cropping conditions and stable water supply of tropical irrigated rice, the manipulation of a relatively few manageable components of diversity can confer stability such that pests are mostly kept at levels which do not justify the use of insecticides. Durable rice plant resistance, including moderate resistance, together with ability to compensate for damage by certain key pests, are regarded as fundamental to successful biological control by the natural enemy complex. Reliable natural enemy action is also considered to depend on all-year-round continuity of prey or hosts made possible by the relatively short fallow periods between staggered two to three rice crops per year and by proximity of certain non-rice habitats, notably the vegetation-covered bunds (levées) surrounding each field. In contrast, synchronous cropping could upset stability by destroying the continuity needed for natural enemy success. Such conclusions are supported by the experience of farmers who use little or no insecticide. Much evidence on destruction of natural enemies by certain insecticides supports the contention that insecticide use, especially early in the crop season, upsets natural enemy control of insects such as Nilaparvata lugens (Stål) (Hemiptera: Delphacidae) and also creates heavy selection pressure for strains of pests that can overcome previously resistant rice cultivars. Such circumstances create outbreaks of secondary pests and impair biological control of some key primary pests such as stem borers. It is concluded that pest management of much tropical irrigated rice must be based on natural controls rarely supplemented by insecticides. The success of this approach depends in particular on further research on dynamics of natural enemy and pest communities in rice ecosystems, especially where climatic conditions and water supply are marginally stable. Much more needs to be known about the nature and utilization of rice plant compensation for damage, particularly by defoliators and stem borers. The justification for, and supplementary use of, insecticides needs to be radically reassessed. There is no evidence that a natural control-based approach, as recommended in this review, is incompat ible with farmer practicability or with future developments in rice production technology, except perhaps the possible mechanization-driven increase in field size which would decrease bund area. In contrast, the insecticide-based approach is not only harmful to natural controls but is costly and mostly demands impracticable decision making by farmers on need-based use.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 84 , Issue 4 , December 1994 , pp. 567 - 587
Copyright
Copyright © Cambridge University Press 1994

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References

Altieri, M.A. (1991) Increasing biodiversity to improve insect pest management in agro-ecosystems. pp. 165–182in Hawksworth, D.L.. (Ed.). The biodiversity of microorganisms and invertebrates: it s role in sustainable agriculture. Wallingford, U.K., CAB International.Google Scholar
Aquino, G. & Heinrichs, E.A. (1979) Brown planthopper populations on resistant varieties treated with a resurgence-causing insecticide. International Rice Research Newsletter 4, 12.Google Scholar
Arida, G.S. & Heong, K.L. (1992) Effect of nitrogen on plant compensation for damage caused by rice stemborer. pp. 265–274in Proceedings of the Mid-Term Research Review, Entomology Division. Los Banños Philippines, International Rice Research Institute.Google Scholar
Arida, G.S. & Heong, K.L. (1994) Sampling spiders during the rice fallow period. International Rice Research Notes 19, 20.Google Scholar
Balasubramaniam, A. & Ooi, P.A.C. (1977) Status of rice stem-borers following double-cropping in Krian, Malaysia. Malaysian Agricultural Journal 51, 54–61.Google Scholar
Bandong, J.P. & Litsinger, J.A. (1988) Development of action control thresholds for major rice pests. pp. 95–102in Teng, P.S. & Heong, K.L. (Eds) Pesticide management and integrated pest management in Southeast Asia. Maryland, USA, Consortium for International Crop Protection.Google Scholar
Bardner, R. & Fletcher, K.E. (1974) Insect infestations and their effects on growth and yield of field crops. Bulletin of Entomological Research 64, 141–160.Google Scholar
Bennet, J.B. (in press) The use of transgenic rice plants and DNA mapping for insect and disease control. in Teng, P.S., Heong, K.L. & Moody, K. (Eds) Advances in rice pest science and management. Los Baños, Philippines, International Rice Re search Institute.Google Scholar
Bentur, J.S. & Kalode, M.B. (1987) Off-season survival of the predatory mirid bug Cyrtorhinus lividipennis (Reuter). Current Science 56, 956–957.Google Scholar
Bhudhasamai, T., Silapasorn, P. & Cantaraprapha, N. (1992) Effect of foliar insecticide sprays on rice leaffolder, Chaphalocrocis medinalis Guenee. and rice yield. International Rice Research Newsletter 17, 20–21.Google Scholar
Binh, N., Tuc, L.M., Hoa, T.T.H. & Heong, K.L. (1993) Managing thrips in the Mekong Delta, Vietnam. International Rice Research Newsletter 18, 31.Google Scholar
Bottrell, D.G. & Rapusas, H.R. (in press) Variability in response of natural enemies to rice genotypes. Environmental Entomology.Google Scholar
Bottrell, D.G., Aguda, R.M., Gould, F.L., Theunis, W., Demayo, C.G. & Magalit, V.F. (1992) Potential strategies for prolonging the usefulness of Bacillus thuringiensis in engineered rice. Korean Journal of Applied Entomology 31, 247–255.Google Scholar
Bottrell, D.G., Heong, K.L., Mew, T.W., Moody, K. & Teng, P.S. (in press) Toward sustainable rice protection. From pest control to integrated pest management. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Burn, A.J. (1987) Cereal crops. pp. 209–256in Burn, A.J., Coaker, T.H. & Jepson, P.C. (Eds) Integrated pest management. London, Academic Press.Google Scholar
Cariño, F.O., Dyck, V.A. & Kenmore, P.E. (1982) Role of natural enemies in population suppression and pest management of green rice leafhoppers. IRRI Saturday Seminar. 29 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Carter, N. (1985) Simulation modelling of the population dynamics of cereal aphids. Biosystems 18, 111–119.Google Scholar
Chang, T.T. (1985) Crop history and genetic conservation—a case study. Iowa State Journal of Research 59, 425–455.Google Scholar
Chau, L.M. (1990) Development of a brown planthopper (BPH) biotype and change in varietal resistance in Mekong Delta. International Rice Research Newsletter 15, 12.Google Scholar
Chaudhary, R.C., Khush, G.S. & Heinrichs, E.A. (1984) Varietal resistance to rice stem-borers in Asia. Insect Science and its Application 5, 447–463.Google Scholar
Chin, K.M. & Ajimilah, N.H. (1982) Rice variety ixtures in disease control. pp. 241–246in Heong, K.L., Lee, B.S., Lim, T.M., Teoh, C.H. & Ibrahim, Y. (Eds) Proceedings of the International Conference on Plant Protection in the Tropics. Kuala Lumpur, Malaysia, Malaysian Plant Protection Society.Google Scholar
Claridge, M.F. (1991) Genetic and biological diversity of insect pests and their natural enemies. pp. 183–194in Hawksworth, D.L. (Ed.) The biodiversity of microorganisms and invertebrates; its role in sustainable agriculture. Wallingford, UK., CAB International.Google Scholar
Claridge, M.F. & den Hollander, J. (1983) The biotype concept and its application to insect pests of agriculture. Crop Protection 2, 85–95.Google Scholar
Claridge, M.F., den Hollander, J. & Morgan, J.C. (1982) Variation within and between populations of the brown planthopper Nilaparvata lugens (Stål). pp. 306–318 in Knight, W.J., Pant, N.C., Robertson, T.S. & Wilson, M.R. (Eds) 1st International Workshop on Leafhoppers and Planthoppers of Economic Importance. London, Commonwealth Institute of Entomology.Google Scholar
Cohen, J.E., Schoenly, K., Heong, K.L., Justo, H., Arida, G., Barrion, A.T. & Litsinger, J.A. (in press) A food-web approach to evaluating the impact of insecticide spraying on insect pest population dynamics in a Philippine irrigated rice ecosystem. Journal of Applied Ecology.Google Scholar
Cook, A.G. & Perfect, T.J. (1985) The influence of immigration on population development of Nilaparvata lugens and Sogatella furcifera and its interaction with immigration by predators. Crop Protection 4, 423–433.Google Scholar
Cook, A.G. & Perfect, T.J. (1989a) Population dynamics of three leafhopper vectors of rice tungro viruses, Nephotettix virescens (Distant), N. nigropictus (Stål) and Recilia dorsalis (Motschul-sky) (Hemiptera: Cicadellidae), in farmers' fields in the Philippines. Bulletin of Entomological Research 79, 437–451.CrossRefGoogle Scholar
Cook, A.G. & Perfect, T.J. (1989b) The population characteristics of the brown planthopper Nilaparvata lugens in the Philippines. Ecological Entomology 14, 1–9.CrossRefGoogle Scholar
den Braber, K. & Meenakanit, P. (1992) Field population dynamics of the rice brown planthopper (BPH) Nilaparvata lugens (Stål) Chainat Provinces (Central Plain of Thailand) Dry Season 1991. FAQ Inter-country Programme for Integrated Pest Control in Rice in South and Southeast Asia. 21 pp. Manila, Philippines, Food and Agriculture Organization.Google Scholar
Disthaporn, S. (1986) Characteristics of rice ragged stunt in Thailand. pp. 160–164in International Symposium on Virus Diseases of Rice and Leguminous Diseases in the Tropics. Tropical Agricultural Research Series no. 19. Tsukuba, Japan, Tropical Agricultural Research Center.Google Scholar
Dobël, G. & Denno, R.F. (1994) Predator-planthopper inter-actions. pp. 325–399in Denno, R.F. & Perfect, T.J. (Eds) Plant hoppers, their ecology and management. London, Chapman & Hall.Google Scholar
Dyck, V.A. & Thomas, B. (1979) The brown planthopper problem. pp. 3–17in Brown planthopper: threat to rice pro duction in Asia. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Dyck, V.A., Misra, B.C., Alam, S., Chen, C.N., Hsieh, C.Y. & Rejesus, R.S. (1979) Ecology of the brown planthopper in the tropics. pp. 61–98in Brown planthopper: threat to rice production in Asia, Los Baños, Philippines, International Rice Research Institute.Google Scholar
Ehrlich, P.R. (1968) The population bomb. 233 pp. New York, Ballantine.Google Scholar
Ehrlich, P.R. & Ehrlich, A.H. (1970) Populations, resources, environment. 383 pp. San Francisco, Freeman.Google Scholar
Ekbom, B.S., Wiktelius, S. & Chiverton, P.A. (1992) Can polyphagous predators control the bird cherry-oat aphid (Rhopalosiphum padi) in spring cereals? A simulation study. Entomologia Experimentalis et Applicata 65, 215–223.Google Scholar
Elton, C.S. (1958) The ecology of invasions by animals and plants. 181 pp. London, Chapman and Hall.Google Scholar
Escalada, M.M. & Heong, K.L. (1993) Communication and implementation of change in crop protection. pp. 191–207in Crop protection and sustainable agriculture. Chichester, UK, Wiley (Ciba Foundation Symposium no. 177).Google Scholar
Escalada, M.M., Lazaro, A.A. & Heong, K.L. (1992) Early spraying by rice farmers in Leyte, Philippines. International Rice Research Newsletter 17, 27–28.Google Scholar
FAO (1979) Guidelines for integrated control of rice insect pests. 115 pp. FAO Plant Production and Protection Paper No. 14. Rome, Food and Agriculture Organization.Google Scholar
Foster, J.E., Ohm, H.W., Patterson, F.L. & Taylor, P.L. (1991) Effectiveness of deploying single gene resistances in wheat for controlling damage by the Hessian fly (Diptera:Cecidomyiidae). Environmental Entomology 20, 964–969.Google Scholar
Fowler, S.V., Claridge, M.F., Morgan, J.C., Peries, I.D.R. & Nugaliyadde, L. (1991) Egg mortality of the brown plan thopper, Nilaparvata lugens (Homoptera: Delphacidae) and green leafhoppers, Nephotettix spp. (Homoptera: Cicadellidae), on rice in Sri Lanka. Bulletin of Entomological Research 81, 161–167.Google Scholar
Gallagher, K.D., Kenmore, P.E. & Sogawa, K. (1994) Judicial use of insecticides deter planthopper outbreaks and extend the role of resistant varieties in Southeast Asian rice. pp. 599–614in Denno, R.F. & Perfect, T.J. (Eds) Plant hoppers, their ecology and management. London, Chapman & Hall.Google Scholar
Gallun, R.L. & Khush, H.D. (1980) Genetic factors affecting expression and stability of resistance. pp. 64–85in Maxwell, F.G. & Jennings, P.R. (Eds) Breeding plants resistant to insects. New York, Wiley.Google Scholar
Goodell, G. (1984) Challenges to international pest management research and extension in the Third World: do we really want 1PM to work? Bulletin of the Entomological Society of America 30, 18–26.CrossRefGoogle Scholar
Goodman, R.M., Hauptli, H., Crossway, A. & Knauf, V.C. (1987) Gene transfer in crop improvement. Science 236, 48–54.Google Scholar
Gould, F. (1986a) Simulation models for predicting durability of insect resistant germplasm: a deterministic diploid two-locus model. Environmental Entomology 15, 1–10.Google Scholar
Gould, F. (1986b) Simulation models for predicting durabilityof insect-resistant germplasm: Hessian fly (Diptera: Cecudomyyidae)—resistant winter wheat. Environmental Entomology 15, 11–23.CrossRefGoogle Scholar
Gould, F. (1988) Evolutionary biology and genetically engineered crops. Bioscience 38, 26–33.CrossRefGoogle Scholar
Gould, F., Kennedy, G.G. & Johnson, M.T. (1991) Effects of natural enemies on the rate of herbivore adaptation to resistant host plants. Entomologia Experimentalis et Applicata 58, 1–14.Google Scholar
Graf, B., Lamb, R., Heong, K.L. & Fabellar, L. (1992) A simulation model for the population dynamics of rice leaffolders (Lepidoptera: Pyralidae) and their interactions with rice. Journal of Applied Ecology 29, 558–570.CrossRefGoogle Scholar
Greathead, D.J. (1979) Critical review of natural enemies of insect pests of rice in South and Southeast Asia and their potential for biological control: proposals for biological studies to assist in development of integrated pest control in South and Southeast Asia. 126 pp. Slough, UK, Commonwealth Institute of Biological Control. (Unpublished CIBC report.)Google Scholar
Guo, Y.J. (1990) Larval parasitism of rice leaffolders (Lepidoptera-Pyralidae) under field and laboratory conditions. PhD thesis, Los Baños, University of the Philippines.Google Scholar
Hare, D.H. (1994) Status and prospects for an integrated approach to control of rice planthoppers. pp. 615–632in Denno, R.F. & Perfect, T.J. (Eds) Plant hoppers, their ecology and management. London, Chapman & Hall.Google Scholar
Heinrichs, E.A. (1988) Role of insect-resistant varieties in rice IPM systems. pp. 43–54in Teng, P.S. & Heong, K.L. (Eds) Pesticide management and integrated pest management in Southeast Asia. College Park, Maryland, Consortium for International Crop Protection.Google Scholar
Heinrichs, E.A. (1994) Host plant resistance. pp. 515–545in Heinrichs, E.A. (Eds) Biology and management of rice insects. New Delhi, India, John Wiley Eastern.Google Scholar
Heinrichs, E.A. & Mochida, O. (1984) From secondary to major pest status: the case of insecticide-induced rice brown planthopper, Nilaparvata lugens, resurgence. Protection Ecology 7, 201–218.Google Scholar
Heinrichs, E.A. & Pathak, P.K. (1981) Resistance to the rice gall midge, Orseolia oryzae in rice. Insect Science and its Application 1, 123–132.Google Scholar
Heinrichs, E.A., Reissig, W.H., Valencia, S.L. & Chelliah, S. (1982) Rates and effect of resurgence-inducing insecticides on populations of Nilaparvata lugens (Hemiptera: Delphacidae) and its predators. Environmental Entomology 11, 1269–1273.CrossRefGoogle Scholar
Heinrichs, E.A., Medrano, F.G. & Rapusas, H.R. (1985) Genetic evaluation for insect resistance in rice. 356 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Heong, K.L. (1990) Feeding rates of the rice leaffolder, Cnaphalocrocis medinalis (Lepidoptera: Pyralidae), on different plant stages. Journal of Agricultural Entomology 7, 81–90.Google Scholar
Heong, K.L. (1993) Rice leaffolders: are they serious pests? pp. 8–11in Research on rice leaffolder management in China. Proceedings of the International Workshop on Economic Thresholds for Rice Leaffolder in China, 1992. Hangzhou, China National Rice Research Institute.Google Scholar
Heong, K.L. & Rubia, E.G. (1990) Mutual interference among wolf spider adult females. International Rice Research Newsletter 15, 30–31.Google Scholar
Heong, K.L. & Sogawa, K. (in press) Rice insect pest manage ment—critical issues. in Teng, P.S., Heong, K.L. & Moody, K. (Eds) Advances in rice pest science and management. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Heong, K.L., Ho, N.K. & Jegatheesaan, S. (1985) The perceptions and management of pests among rice farmers in the Misdo Irrigation Scheme, Malaysia. 11 pp. MARDI Report no. 105. Kuala Lumpur, Malaysia, Malaysian Agricultural Research and Development Institute.Google Scholar
Heong, K.L., Barrion, A.T. & Aquino, G.B. (1990a) Dynamics of major predator and prey species in ricefields. International Rice Research Newsletter 15, 22–23.Google Scholar
Heong, K.L., Bleih, S. & Lazaro, A.A. (1990b) Predation of Cyrtorhinus lividipennis Reuter on eggs of the green leafhopper and brown planthopper in rice. Researches on Population Ecology 32, 255–262.CrossRefGoogle Scholar
Heong, K.L., Bleih, S. & Rubia, E.G. (1990c) Prey preference of the wolf spider, Pardosa pseudoannulata (Boesenberg et Strand). Researches on Population Ecology 32, 179–186.Google Scholar
Heong, K.L., Aquino, G.B. & Barrion, A.T. (1991) Arthropod community structures of rice ecosystems in the Philippines. Bulletin of Entomological Research 81, 407–416.Google Scholar
Heong, K.L., Aquino, G.B. & Barrion, A.T. (1992) Population dynamics of plant- and leafhoppers and their natural enemies in rice ecosystems in the Philippines. Crop Protection 11, 371–379.Google Scholar
Heong, K.L., Escalada, M.M. & Lazaro, A.A. (in press a) Misuse of pesticides among rice farmers in Leyte, Philippines. in Pingali, P.L. & Roger, P.A. (Eds) Impact of pesticides on farmers' health and fhe rice environment. San Francisco, USA, Kluwer Press.Google Scholar
Heong, K.L., Escalada, M.M. & Vo, Mai (in press b) An analysis of insecticide use in rice-case studies in the Philippines and Vietnam. International Journal of Pest Management.Google Scholar
Hibino, H. & Cabunagan, R.C. (1986) Rice tungro-associated viruses and their relations to host plants and vector Ieafhoppers. pp. 173–182in International Symposium on Virus Diseases of Rice and Leguminous crops in the Tropics. Tropical Agricul tural Research Series no. 19. Tsukuba, Japan, Tropical Agricul tural Research Center.Google Scholar
Hidaka, T., Vungsilabutr, P. & Kadkao, S. (1974) Studies on ecology and control of the rice gall midge in Thailand. Technical Bulletin 6. 113 pp. Tokyo, Japan, Tropical Agriculture Research Center, Ministry of Agriculture and Forestry.Google Scholar
Holt, J., Chancellor, T.C.B. & Satapathy, M.K. (1992) A prototype simulation model to explore options for the management of rice tungro virus disease. Proceedings of the Brighton Crop Protection Conference—Pests and Diseases 1992, 973–980.Google Scholar
Hu, G.W., Chen, Z.X., Liu, G., Ma, J.F. & Pan, Q.W. (1993) Dynamic modelling of compensation of late season hybrid to rice leaf-folder (Cnaphalocrocis medinalis) defoliation. Scientia Agricultura Sinica 26, 24–29. (In Chinese with English summary.)Google Scholar
IRRI (1988) Stemborer populations in traditional and modem varieties. pp. 243–244 in Annual Report for 1987. Los Baños, Philippines, International Rice Research Institute.Google Scholar
IRRI (1989) IRRI towards 2000 and beyond. 68 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
IRRI (1990) Improved pest management, pest-yield interactions. pp. 173–174in Program report for 1989. Los Baños, Philippines, International Rice Research Institute.Google Scholar
IRRI (1993a) Effect of white stem borer damage on rice yield in West Java. pp. 28–29in Program report for 1992. Los Baños, Philippines, International Rice Research Institute.Google Scholar
IRRI (1993b) Rice IPM Network final report. 153 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Israel, P. & Abraham, T.P. (1967) Techniques for assessing crop losses caused by rice stem borers in tropical areas. pp. 265–275in The major insect pests of the rice plant. Proceedings of a Symposium at the International Rice Research Institute, September 1964. Baltimore, Maryland, Johns Hopkins Press.Google Scholar
Jena, K.K. & Khush, G.S. (1984) Embryo rescue of interspecific hybrids and its scope in rice improvement. Rice Genetics Newsletter 1, 133–134.Google Scholar
Jones, F.G.W., Dunning, R.A. & Humphries, K.P. (1955) The effects of defoliation and loss of stand upon yield of sugar beet. Annals of Applied Biology 43, 63–70.CrossRefGoogle Scholar
Jones, T.H., Hassell, M.P. & Pacala, S.W. (1993) Spatial heterogeneity and the population dynamics of a host parasitoid system. Journal of Animal Ecology 62, 251–262.Google Scholar
Joshi, R.C., Angela, C.J. & Ukwungwu, M.N. (1992) Yield losses due to stalk-eyed fly (SEF) in Nigeria. International Rice Research Institute Newsletter 17, 15.Google Scholar
Kartohardjono, A. & Heinrichs, E.A. (1984) Populations of the brown planthopper, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae), and its predators on rice varieties with different levels of resistance. Environmental Entomology 13, 359–365.Google Scholar
Katanyukul, W., Kadkao, S. & Chansrisommai, N. (1992) Rice yield losses to gall midge in northern Thailand. International Rice Research Newsletter 7, 14–15.Google Scholar
Kenmore, P.E. (1979) Limits of the brown planthopper problem: implications for integrated pest management. IRRI Saturday Seminar. 75 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Kenmore, P.E. (1991) Indonesia's integrated pest management—a model for Asia. 56 pp. Manila, Philippines, Food and Agricul hire Organization.Google Scholar
Kenmore, P.E., Cariño, F.O., Perez, C.A., Dyck, V.A. & Gutierrez, A.P. (1984) Population regulation of the rice brown planthopper (Nilaparvata lugens Stål) within rice fields in the Philippines. Journal of Plant Protection in the Tropics 1, 19–37.Google Scholar
Kenmore, P.E., Heong, K.L. & Putter, C.A. (1985) Political, social and perceptual aspects of integrated pest management programmes. pp. 47–66in Lee, B.S., Loke, W.H. & Heong, K.L. (Eds) Integrated pest management in Malaysia. Kuala Lumpur, Malaysian Plant Protection Society.Google Scholar
Kennedy, G.G., Gould, F., de Ponti, O.M.B. & Stinner, R.E. (1987) Ecological, agricultural, genetic and commercial considerations in the development of insect-resistant germplasm. Environmental Entomology 16, 327–338.Google Scholar
Khan, Z.R., Barrion, A.T., Litsinger, J.A., Castilla, N.P. & Joshi, R.C. (1988) A bibliography of rice leaffolders (Lepidoptera: Pyralidae). Insect Science and its Application 9, 129– 174.Google Scholar
Khoo, K.C., Ooi, P.A.C. & Ho, C.T. (1991) Crop pests and their management in Malaysia. 242 pp. Kuala Lumpur, Malaysia, Tropical Press Sdn. Bhd.Google Scholar
Khush, G.S. (1984) Breeding rice for resistance to insects. Protection Ecology 7, 147–165.Google Scholar
Kiritani, K. (1979) Pest management in rice. Annual Review of Entomology 24, 279–312.Google Scholar
Kisimoto, R. (1979) Brown planthopper migration. pp. 113–121in Brown planthopper: threat to rice production in Asia. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Kuno, E.(1979) Ecology of the brown planthopper in temperate regions. pp. 45–60in Brown planthopper: threat to rice production in Asia. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Lim, G.S. (1970) Some aspects of the conservation of natural enemies of rice stem borers and the feasibility of harmonizing chemical and biological control of these pests in Malaysia. Mushi 43, 127–135.Google Scholar
Lim, G.S. (1974) Potential for the biological control of rice insect pests. MARDI Report No. 22, 27 pp.Google Scholar
Lim, G.S. & Heong, K.L. (1977) Habitat modification for regulating pest populations of rice in Malaysia. MARDI Report No. 50, 28 pp.Google Scholar
Lim, G.S. & Heong, K.L. (1984) The role of insecticides in rice integrated pest management. pp. 19–39in Proceedings: FAO/IRRI Workshop on judicious and efficient use of insecticides on rice. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Litsinger, J.A. (1989) Second generation insect pest problems on high yielding rices. Tropical Pest Management 35, 235–242.CrossRefGoogle Scholar
Litsinger, J.A. (1991) Crop loss assessment in rice. pp. 1–65in Heinrichs, E.A. & Miller, T.A. (Eds) Rice insects: management strategies. New York, Springer Verlag.Google Scholar
Litsinger, J.A. (1993) Cultural, mechanical, and physical control of rice insects. pp. 547–582in Heinrichs, E.A. (Ed.) Biology and management of rice insects. New Delhi, India, John Wiley Eastern.Google Scholar
Loevinsohn, M.E. (1991) Asynchrony of cultivation and the ecology of rice pests. pp. 44–47in Magallona, E.D. (Ed.) 11th International Congress of Plant Protection Proceedings. International Plant Protection in the Developing World. 1987. Manila, Philippines.Google Scholar
Loevinsohn, M.E. (1994) Rice pests and agricultural environments. pp. 485–511in Heinrichs, E.A. (Ed.) Biology and management of rice insects. New Delhi, India, John Wiley Eastern.Google Scholar
Loevinsohn, M.E., Litsinger, J.A. & Heinrichs, E.A. (1988) Rice insect pests and agricultural change. pp. 161–182in Harris, M.K. & Rogers, C.E. (Eds) The entomology of indigenous and naturalized systems in agriculture. Boulder, Colorado, USA, Westview Press.Google Scholar
Manwan, I., Sama, S. & Rizvi, S.A. (1987) Management strategy to control rice tungro in Indonesia. pp. 92–97in Proceedings of Workshop on Rice Tungro Virus. Indonesia, Maros Research Institute for Food Crops, Ministry of Agriculture.Google Scholar
May, R.M. (1971) Stability in multi-species community models. Mathematical Biosciences 12, 59–79.Google Scholar
Morooka, Y., Herdt, R.W. & Haws, L.D. (1979) An analysis of the labor-intensive continuous rice production system at IRRI. IRRI Research Paper No. 29, 41 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Mundt, C.C. (in press) Techniques for managing pathogen coevolution with host plants to prolong resistance. in Teng, P.S., Heong, K.L. & Moody, K. (Eds) Advances in rice pest science and management. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Murdoch, W.W. (1990) The relevance of pest-enemy models to biological control. pp. 1–24in Mackauer, M., Ehler, L.E. & Roland, J. (Eds) Critical issues in biological control. Andover, UK, Intercept.Google Scholar
Myint, M.M., Rapusas, H.R. & Heinrichs, E.A. (1986) Integration of varietal resistance and predation for the management of Nephotettix virescens (Homoptera: Cicadellidae) populations on rice. Crop Protection 5, 259–265.Google Scholar
Nickel, J.L. (1964) Biological control of rice stemborers: a feasi bility study. IRRI Technical Bulletin No. 2. 111 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Oka, I.N. (1983) The potential for the integration of plant resistance, agronomic, biological, physical/mechanical techniques, and pesticides for pest control in farming systems. Indonesian Agricultural Research & Development Journal 5, 8–17.Google Scholar
Oka, I.N. (1988) Role of cultural techniques in rice IPM systems. pp. 83–93in Teng, P.S. & Heong, K.L. (Eds) Pesticide management and integrated pest management in Southeast Asia. Maryland, USA, Consortium for International Crop Protection.Google Scholar
Pantua, P. (1979) Population fluctuations of the insect pests and their natural enemies in a continuously weekly-planted rice garden. 15 pp. Proceedings of the 10th National Conference of the Pest Control Council of the Philippines, Manila.Google Scholar
Pathak, M.D. & Dhaliwal, G.S. (1981) Trends and strategies for rice insect problems in tropical Asia. IRRI Research Paper Series No. 64, 15 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Pathak, M.D. & Dyck, V.A. (1973) Developing an integrated method of rice insect pest control. PANS 19, 534–544.Google Scholar
Pathak, P.K. & Heinrichs, E.A. (1982) Selection of biotype populations 2 and 3 of Nilaparvata lugens by exposure to resistant rice varieties. Environmental Entomology 11, 85–90.Google Scholar
Pathak, M.D. & Saxena, R.C. (1980) Breeding approaches in rice. pp. 421–455in Maxwell, F.C. & Jennings, P.R. (Eds) Breeding plants resistant to insects. New York, John Wiley.Google Scholar
Peng, S. (1993) Physiological processes of crop growth and production and their relationships to damage by stem borer, bacterial blight and sheath blight. pp. 7–21in Mechanisms of damage by stem borer, bacterial leaf blight and sheath blight, and their effects on rice yield. SARP Research Proceedings. Wageninen, Department of Theoretical Ecology, and Los Baños, Philippines, International Rice Research Institute.Google Scholar
Perfect, T.J. & Cook, A.G. (1987) Dispersal patterns of the rice brown planthopper, Nilaparvata lugens (Stål), in a tropical rice-growing system and their implications for crop protection. Journal of Plant Protection in the Tropics 4, 121–127.Google Scholar
Perfect, T.J. & Cook, A.G. (1994) Rice planthopper dynamics: a comparison between temperate and tropical regions. pp. 282–301in Denno, R.F. & Perfect, T.J. (Eds) Planthoppers, their ecology and management. London, Chapman & Hall.Google Scholar
Pimental, D. (1961) Species diversity and insect population outbreaks. Annals of the Entomological Society of America 54, 76–86.Google Scholar
Pimm, S.L. (1984) The complexity and stability of ecosystems. Nature 307, 321–326.Google Scholar
Rao, A.V., Mahajan, R.K. & Prasad, A.S.R. (1987) Distribution of productive tillers and yield loss due to stem-borer infestation of rice. Indian Journal of Agricultural Sciences 57, 850–852.Google Scholar
Rao, P.S.P. (1989) Yield losses due to gall midge Orseolia oryzue Wood-Mason in some rice varieties and characterization of tolerance. Tropical Pest Management 35, 205–206.Google Scholar
Rapusas, H.R. & Heinrichs, E.A. (1987) Varietal resistance to insect pests in rice. pp. 339–344in Magallona, E.D. (Ed.) Proceedings of the 11th International Congress of Plant Protection: vol. II. Manila, Philippines.Google Scholar
Riley, J.R., Reynolds, D.R. – Farrow, R.A. (1987) The migration of Nilaparvata lugens (Stål) (Delphacidae) and other Hemiptera associated with rice during the dry season in the Philippines: a study using radar, visual observations, aerial netting and ground trapping. Bulletin of Entomological Research 77, 145–169.Google Scholar
Rombach, M.C. & Gallagher, K.D. (1994) The brown planthop per: promises, problems and prospects. pp. 691–707in Heinrichs, E.A. (Ed.) Biology and management of rice insects. New Delhi, India, John Wiley Eastern.Google Scholar
Rombach, M.C., Rombach, G.M. & Roberts, D.W. (1987) Pathogens of insect pests of rice: a bibliography. Insect Science and its Application 8, 197–210.Google Scholar
Rothschild, G.H.L. (1970) Observations on the ecology of the rice-ear bug Leptocorisa oratorius (F.) (Hemiptera: Alydidae) in Sarawak (Malaysian Borneo). Journal of Applied Ecology 7, 147–167.Google Scholar
Rothschild, G.H.L. (1971) The biology and ecology of rice-stem borers in Sarawak (Malaysian Borneo). Journal of Applied Ecology 8, 287–322.Google Scholar
Rubia, E.C. (1994) The pest status and management of white stem borer Scirpophaga innotata (Walker) (Lepidoptera: Pyralidae) in West Java, Indonesia. PhD Thesis, University of Queensland, Brisbane, Australia.Google Scholar
Rubia, E.G., Shepard, B.M., Yambao, E.B., Ingram, K.T., Arida, G.S. & Penning de Vries, F. (1989) Stem borer damage and grain yield of flooded rice. Journal of Plant Protection in the Tropics 6, 205–211.Google Scholar
Russell, D.A., Radwin, S.M., Irving, N.S., Jones, K.A. – Downham, M.C.A. (1993) Experimental assessment of the impact of defoliation by Spodoptera littoralis on growth and yield of Giza 75 cotton. Crop Protection 12, 303–309.Google Scholar
Savary, S., Elazegui, F.A., Moody, K., Litsinger, J.A. & Teng, P.S. (in press) Characterization of rice cropping practices and multiple pest systems in the Philippines. Agricultural Systems.Google Scholar
Sawada, H., Subroto, S.W.G., Mustaghfirin, G. & Wuaya, E.S. (1992) Immigration, population development and outbreaks of the brown planthopper, Nilaparvata lugens (Stål), under different rice cultivation patterns in central Java, Indonesia. Technical Bulletin—Food and Fertilizer Technology Center no. 130, 9–13.Google Scholar
Saxena, R.C. & Barrion, A.A. (1985) Biotypes of the brown planthopper Nilaparvata lugens (Stål) and strategies in deployment of host plant resistance. Insect Science and its Application 6, 271–289.Google Scholar
Saxena, R.C. & Khan, Z.R. (1989) Factors affecting resistance of rice varieties to planthopper and leafhopper pests. Agricultural Zoology Reviews 3, 97–132.Google Scholar
Schoenly, K., Cohen, J.E., Heong, K.L., Arida, G., Barrion, A.T. & Litsinger, J.A. (in press) Quantifying the impact of insecticides on food web structure of rice-arthropod popu lations in Philippine farmers' irrigated fields, in Polis, G.A. & Winemiller, K. (Eds) Food webs: integration of patterns and dynamics. London, Chapman & Hall.Google Scholar
Smith, J., Litsinger, J.A., Bandong, J.P., Lumaban, M.D. & Cruz, C.G. de la (1989) Economic thresholds for insecticide application to rice: profitability and risk analysis to Filipino farmers. Journal of Plant Protection in the Tropics 6, 67–87.Google Scholar
Southwood, T.R.E. & Way, M.J. (1970) Ecological background to pest management. pp. 6–28in Rabb, R.L. & Guthrie, F.E. (Eds) Concepts of pest management. Raleigh, North Carolina State University.Google Scholar
Teng, P.S. (1990) Integrated pest management in rice. Annex I. 86 pp. in Report to the Integrated Pest Management Task Force. Chatham Maritime, UK, ODA Natural Resources Institute.Google Scholar
Teng, P.S. & Heong, K.L. (Eds) (1988) Pesticide management and integrated pest management in Southeast Asia. 473 pp. Maryland, USA, Consortium for International Crop Protection.Google Scholar
Teng, P.S., Torres, C.Q., Nuque, F.L. & Calvero, S.B. (1990) Current knowledge on crop losses in tropical rice. pp. 39–53in Crop loss assessment in rice. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Thorne, G.N. & Wood, D.W. (1987) The fate of carbon in dying tillers of winter wheat. Journal of Agricultural Science 108, 515–522.Google Scholar
Thresh, J.M. (1986) The epidemiology and control of rice tungro disease. 48 pp. Report to FAO Intercountry Rice Intergrated Pest Control Programme. Rome, Food and Agriculture Organization.Google Scholar
Toenniessen, G.H. & Herdt, R.W. (1989) The Rockefeller Foundation International programme on rice biotechnology. pp. 291–317in Strengthening collaboration in biotechnology: international agricultural research and the private sector. Washington, DC, Bureau of Science and Technology, Agency for International Development.Google Scholar
Triwidodo, H., Wijayanti, R. & Hogg, D.B. (1992) The population dynamics and management program of white stem borer Scirpophaga innotata Wlk. (Lepidoptera: Pyralidae) in West Java, Indonesia. Paper presented at the International Rice Research Conference, 1992. 15 pp. Los Baños, Philippines, International Rice Research Institute.Google Scholar
van Emden, H.F. (1990a) Interaction of host plant resistance to insects with other control measures. Proceedings of the British Crop Protection Conference (Pests and Diseases) 1990, 939–948.Google Scholar
van Emden, H.F. (1990b) Plant diversity and natural enemy efficiency in agro-ecosystems. pp. 63–80in Mackauer, M., Ehler, L.E. & Roland, J. (Eds) Critical issues in biological control. Andover, UK, Intercept.Google Scholar
van Emden, H.F. & Williams, G.C. (1974) Insect stability and diversity in agro-ecosystems. Annual Review of Entomology 19, 455–475.Google Scholar
van der Goot, P. (1948) Twelve years of rice borer control by regulating the time of sowing in West Brabes, Central Java. Landboukundig Tijdschrift 20, 465–494.Google Scholar
Vaughan, D.A. & Sitch, L.A. (1991) Gene flow from the jungle to farmers. Wild-rice genetic resources and their uses. Bioscience 41, 22–28.Google Scholar
Viajante, V.D. & Heinrichs, E.A. (1986) Rice growth and yield as affected by the whorl maggot Hydrellia philippina Ferino (Diptera: Ephydridae). Crop Protection 5, 176–181.Google Scholar
Vo, Mai, Thu Cuc, N., Hung, N.Q., Chau, L.M., Chien, H.V., Escalada, M.M. & Heong, K.L. (1993) Farmers’ perceptions of rice pest problems and management tactics used in Vietnam. International Rice Research Newsletter 18, 31.Google Scholar
Waage, J.K. (1991) Biodiversity arid biological control. pp. 149– 163in Hawksworth, D.L. (Ed.) The biodiversity of microorganisms and invertebrates: its role in sustainable agriculture. Wallingford, UK, CAB International.Google Scholar
Wareing, D.R., Holt, J., Cheng, J.A. & Norton, G.A. (1990) Use of computer tools for the design of pest management strategies. pp. 231–242in Grayson, B.T., Green, M.B. & Copping, L.G. (Eds) Pest management in rice. London, Elsevier.Google Scholar
Way, M.J. (1966) The natural environment and integrated methods of pest control. Journal of Applied Ecology 3, (Suppl.), 29–32.Google Scholar
Way, M.J. (1977) Pest and disease status in mixed stands vs monoculture; the relevance of ecosystem stability. pp. 127– 138in Cherrett, J.M. & Sagar, G.R. (Eds) Origins of pest parasites, disease and weed problems. Oxford, Blackwell Scientific Publications.Google Scholar
Way, M.J. (1987) Effects of agricultural development on vectorborne diseases. pp. 107–141in Environmental management and vector control. Rome, Food and Agriculture Organization.Google Scholar
Weber, G. & Parada, O. (1994) Development of an integrated pest management system for rice in Latin America. pp. 731– 746in Heinrichs, E.A. (Ed.) Biology and management of rice insects. New Delhi, India, John Wiley Eastern.Google Scholar
Wellings, P.W. & Dixon, A.F.G. (1987) The role of weather and natural enemies in determining aphid outbreaks. pp. 313 –346in Barbosa, P. & Schultz, J.C. (Eds) Insect outbreaks. New York, Academic Press.Google Scholar
Widiarta, I.N., Suzuki, Y., Sawada, J. & Nakasuji, F. (1990) Population dynamics of the green leafhopper, Nephotettix virescens Distant (Hemiptera: Cicadellidae) in synchronized and staggered transplanting areas of paddy fields in Indonesia. Researches on Population Ecology 32, 319–328.Google Scholar
Winterer, J., Klepetka, B., Banks, J. & Kareiva, P. (in press) Crop intensification and increased pest problems: are there strategies for minimizing the vulnerability of rice to pest epidemics? in Teng, P.S., Heong, K.L. & Moody, K. (Eds). Advances in rice pest science and management. Los Baños, Philippines, International Rice Research Institute.Google Scholar
Wratten, S.D. (1987) The effectiveness of native natural enemies. pp. 89–112in Burn, A.J., Coaker, T.H. & Jepson, P.C. (Eds) Integrated pest management. London, Academic Press.Google Scholar
Yasuniatsu, K. (1967) The possible control of rice stem borers by the use of natural enemies. pp. 431 –442in The major insect pest of the rice plant. Proceedings Symposium, IRRI 1964. Baltimore, USA, John Hopkins Press.Google Scholar
Yasumatsu, K. & Torii, T. (1968) Impact of parasites, predators, and diseases on rice pests. Annual Review of Entomology 13, 295–324.Google Scholar