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Sugar-cane weed community interactions with arthropods and pathogens

Published online by Cambridge University Press:  19 September 2011

A. T. Showler ,
T. E. Reagan  and
R. M. Knaus
A. T. Showler
Affiliation:
AAAS Fellow, Office of Foreign Disaster Assistance/AID, U.S. State Department, Washington, DC 20523, USA
T. E. Reagan*
Affiliation:
Department of Entomology, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, USA
R. M. Knaus
Affiliation:
Nuclear Science Center, Louisiana State University, Baton Rouge, LA 70803, USA
*
* To whom correspondence should be addressed.
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Abstract

Polyculture can help stabilize agroecosystems against frequent and severe pest outbreaks. An overview of the published data highlights ecological relationships among weeds, nematodes, arthropods, sugar-cane mosaic virus (SCMV), and the sugar-cane crop itself. Whereas individual studies commonly depict weeds as being either “good” or “bad”, this review is a synthesis of the variable roles and interactions of weeds in sugar-cane in order to provide a realistic perspective on the possibilities of weed interactions in sugar-cane agroecosystems. Conservation of weeds in Louisiana sugar-cane has resulted in more diversified arthropod fauna, higher natural enemy populations, and reduced damage by the sugar-cane borer, Diatraea saccharalis (F.). Weed competition and SCMV infection have each been associated with altered sugar-cane free amino acid accumulations that appeared to play a role in reducing populations of selected phytophagous nematodes. The combination of both weed and SCMV stress factors, however, have been shown to favour higher sugar-cane nematode populations. Although some weeds are alternate hosts for SCMV and its aphid vectors, and ratoon stunting disease (RSD), weed growth has not been linked with higher phytophagous nematode infestations or incidence of RSD. Weeds, if kept below economically competitive densities, may be ecologically and financially sound assets to sugar-cane pest management tactics.

Résumé

La polyculture aide à stabiliser les agroéchosystèmes contre les fréquentes et sévères épidémies d'insectes nuisibles. Une revue de la littérature met en lumière les relations écologiques entre les plantes herbacées, les nématodes, les arthropodes, le virus de la mosaique de la canne à sucre (SCMV), et la culture de la canne à sucre. Ce travail présente une synthèse des rôles et des interactions des plantes herbacées en agroéchosystème de canne à sucre. La présence de plantes herbacées dans les cultures de canne à sucre de Louisiane favorise une faune d'arthropodes diversifiée, des populations élevees d'ennemis naturels, et des dommages moindres par Diatraea saccharalis (F.). La compétition entre les plantes herbacées et les infections (SCMV) furent associées individuellement à l'accumulations d'acides aminés libres dans la canne à sucre ce qui réduirait les populations de certains nématodes phytophages. L'effet combiné du stress causé par les plantes herbacées et la SCMV favorise des populations élevées de nématodes de la canne à sucre. Quoique quelques plantes herbacées ont des hôtes alternatifs pour la SCMV et ses vecteurs aphidiens, et la maladie “ratoon stunting” (RSD), la croissance des plantes herbacées n'est pas liée aux infestations élevées de populations de nématodes ou à l'incidence de RSD. Les plantes herbacées, lorsque maintenues en deça des densités économiques de compétition, semblent apporter des avantages écologiques et financiers aux tactiques de contrôle des populations de ravageurs de la canne à sucre.

Keywords

Sugar-caneweedsinsectspathogensnematodesecologyfree amino acids
Type
Mini Review
Information
International Journal of Tropical Insect Science , Volume 11 , Issue 1 , February 1990 , pp. 1 - 11
Copyright
Copyright © ICIPE 1990

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References

REFERENCES

Abbott, E. V. and Charpentier, L. J. (1963) Additional insect vectors of sugarcane mosaic. Proc. Int. Soc. Sugarcane Technol. 11, 755–760.Google Scholar
Abbott, E. V. and Tippett, R. L. (1966) Strains of sugarcane mosaic virus. USDA Bull. no. 1340, Wash., D.C.Google Scholar
Adams, C. T., Summers, T. E., Lofgren, C. S., Focks, D. A. and Prewitt, J. C. (1981) Interrelationship of ants and the sugarcane borer in Florida sugarcane fields. Environ. Entomol. 10, 415–418.CrossRefGoogle Scholar
Ali, A. D., Reagan, T. E. and Flynn, J. L. (1984) Influence of selected weedy and weed-free sugarcane habitats on diet composition and foraging activity of the imported fire ant (Hymenoptera: Formicidae). Environ. Entomol. 13, 1037–1041.CrossRefGoogle Scholar
Ali, A. D. and Reagan, T. E. (1985a) Vegetation manipulation impact on predator and prey populations in Louisiana sugarcane ecosystems. J. econ. Entomol. 78, 1409–1414.CrossRefGoogle Scholar
Ali, A. D. and Reagan, T. E. (1985b) Spider inhabitants of sugarcane ecosystems in Louisiana: An update. Proc. La. Acad. Sci. 48, 18–22.Google Scholar
Ali, A. D. and Reagan, T. E. (1986) Influence of selected weed control practices on araneid faunal composition and abundance in sugarcane. Environ. Entomol. 15, 527–531.CrossRefGoogle Scholar
Ali, A. D., Reagan, T. E., Kitchen, L. M. and Flynn, J. L. (1986) Effects of johnsongrass (Sorghum halepense) density on sugarcane (Saccharum officinarum) yield. Weed Sci. 34, 381–383.CrossRefGoogle Scholar
Allen, W. W. and Smith, R. F. (1958) Some factors influencing the efficiency of Apanteles mediacaginis Muesebeck (Hymenoptera: Braconidae) as a parasite of the alfalfa caterpillar, Colia philodice eurytheme Boisduval. Hilgardia 28, 1–43.CrossRefGoogle Scholar
Altieri, M. A. (1980) Diversification of corn agroecosystems as a means of regulating fall armyworm populations. Fla. Entomol. 63, 450–457.CrossRefGoogle Scholar
Altieri, M. A. (1981) Weeds may augment biological control of insects. Calif. Agric. 35, 22–24.Google Scholar
Altieri, M. A. (1984) Patterns of insect diversity in monocultures and polycultures of brussels sprouts. Prot. Ecol. 6, 227–232.Google Scholar
Altieri, M. A., Francis, C. A., Van Schoonhoven, A. and Doll, J. D. (1978) A review of insect prevalence in maize (Zea mays L.) and bean (Phaseolus vulgaris L.) polycultural systems. Field Crops Res. 1, 33–49.CrossRefGoogle Scholar
Altieri, M. A. and Schimdt, L. L. (1986) Cover crops affect insect and spider populations in apple orchards. Calif. Agric. January/February, 15–17.Google Scholar
Altieri, M. A. and Todd, J. W. (1981) Some influences of vegetational diversity on insect communities of Georgia soybean fields. Prot. Ecol. 3, 333–338.Google Scholar
Altieri, M. A., Todd, J. W., Hauser, E. W., Patterson, M., Buchanan, G. A. and Walker, R. H. (1981) Some effects of weed management and row spacing on insect abundance in soybean fields. Prot. Ecol. 3, 339–343.Google Scholar
Altieri, M. A., Van Schoonhoven, A., and Doll, J. D. (1977) The ecological role of weeds in insect pest management systems: A review illustrated by bean (Phaseolus vulgaris) cropping systems. PANS 23, 195–205.CrossRefGoogle Scholar
Altieri, M. A. and Whitcomb, W. H. (1979) The potential use of weeds in the manipulation of beneficial insects. Hortscience 14, 12–18.CrossRefGoogle Scholar
Altieri, M. A. and Whitcomb, W. H. (1980a) Predaceous and herbaceous arthropods associated with camphorweed (Heterotheca subaxillaries Lamb.) in north Florida. J. Ga. Entomol. Soc. 15, 290–299.Google Scholar
Altieri, M. A. and Whitcomb, W. H. (1980b) Weed manipulation for insect pest management in corn. Environ. Entomol. 4, 483–489.Google Scholar
Anzalone, L. Jr (1963) Susceptibility of rice to a strain of sugarcane mosaic virus. Plant Dis. Rep. 47, 583–584.Google Scholar
Apt, W. J. and Koike, H. (1962) Pathogenicity of Helicotylenchus nannus and its relation with Pythium graminicola on sugarcane in Hawaii. Phytopathol. 52, 798–802.Google Scholar
Arevelo, R. A., Cerrizuela, E. A. and Olea, I. L. (1977) Competition from specific weeds in sugarcane. II. Sorghum halepense (L.) Pers. Rev. Agron. Noroeste Argent. 14, 39–51.Google Scholar
Astudillo, G. E. and Birchfield, W. (1980) Pathology of Hoplolaimus columbus on sugarcane. Joint Meeting of the Amer. Phytopathol. Soc. Southern Div. and the Southern Assoc. of Agric. Scientist 70, 565 (Abstr.).Google Scholar
Atsatt, P. R. and O'Dowd, D. J. (1976) Plant defense guilds. Science 193, 24–29.CrossRefGoogle ScholarPubMed
Bach, C. E. (1980) Effect of plant diversity and time of colonization on an herbivore-plant interaction. Oecologia 44, 319–326.CrossRefGoogle Scholar
Baird, S. M. and Bernard, E. C. (1984) Nematode populations and community dynamics in soybean-wheat cropping and tillage regimes. J. Nematol. 16, 379–386.Google ScholarPubMed
Barnett, N. M. and Naylor, A. W. (1966) Amino acid and proline metabolism in bermuda grass during water stress. Plant Physiol. 41, 1222–1230.CrossRefGoogle ScholarPubMed
Barney, R. J., Lamp, W. O., Armbrust, E. J. and Kapusta, G. (1984) Insect predator community and its response to weed management in spring-planted alfalfa. Prot. Ecol. 6, 23–33.Google Scholar
Batra, S. W. T. (1979a) Insects associated with weeds of the northeastern United States: Quickweeds Galinsoga ciliata and G. parviflora (Compositae). Environ. Entomol. 8, 1078–1082.CrossRefGoogle Scholar
Batra, S. W. T. (1979b) Insects associated with weeds in the northeastern United States. II. Cinquefoils, Potentilla norvegica and P. recta (Rosaceae). J. N. Y. Entomol. Soc. 87, 216–222.Google Scholar
Batra, S. W. T. (1979c) Insects associated with weeds in the northeastern United States. III. Chickweed, Stellaria media, and stitchwort, S. graminea (Caryophyllaceae). J. N. Y. Entomol. Soc. 87, 223–235.Google Scholar
Beisler, J. M., Pienkowski, R. L., Kok, L. T. and Robinson, W. H. (1977) Insects associated with weedy grasses and yellow nutsedge. Environ. Entomol. 6, 455–459.CrossRefGoogle Scholar
Benda, G. T. A. (1969) Sugarcane mosaic in Louisiana: Some aspects of a chronic problem. Amer. Soc. Sugarcane Technol. 16, 61–81.Google Scholar
Bendixon, L. E., Reynolds, D. A. and Riedel, R. M. (1979) An annotated bibliography of weeds as reservoirs for organisms affecting crops. I. Nematodes. Ohio Agric. Res. and Dev. Center, Res. Bull. 1109.Google Scholar
Birchfield, W. (1969) Nematicides for control of plant-parasitic nematodes on sugarcane in Louisiana Proc. Dis. Rep. 53, 530–533.Google Scholar
Birchfield, W. (1971) Effects of some nematicides on plant nematodes and sugarcane yields. Proc. Sugarcane Technol. 1–8.Google Scholar
Birchfield, W. (1972) Nematicides on sugarcane. Report to the Sugarcane Contact Commission and Louisiana Agric. Exp. Stn. pp. 71–73.Google Scholar
Birchfield, W. (1984) Nematode parasites of sugarcane. In Plant and Insect Nematodes (Edited by Nickel, W. R.), pp. 571–587. Marcel Dekker, New York.Google Scholar
Bird, A. F. (1959) The attractiveness of roots to the plant parasitic nematodes Meloidogyne javanica and M. hapla. Nematologica 4, 322–335.CrossRefGoogle Scholar
Brandenburg, R. L. and Kennedy, G. C. (1981) Overwintering of the pathogen Entomophthora floridana and its host, the two spotted spider mite. J. econ. Entomol. 74, 428–431.CrossRefGoogle Scholar
Brandes, E. W. (1920) Artificial and insect transmission of sugarcane mosaic. J. Agric. Res. 19, 131–138.Google Scholar
Carroll, D. P. and Hoyt, S. C. (1986) Hosts and habitats of parasitoids (Hymenoptera:Aphididae) implicated in biological control of apple aphid (Homoptera:Aphididae). Environ. Entomol. 15, 1171–1178.CrossRefGoogle Scholar
Charpentier, L. J., McCormick, W. J. and Mathes, R. (1967) Beneficial arthropods inhabiting sugarcane fields and their effects on borer infestations. Sugar Bull. 45, 276–277.Google Scholar
Dempster, J. P. (1969) Some effects of weed control on the numbers of the small cabbage white (Pieris rapae L.) on brussels sprouts. J. Appl. Ecol. 6, 339–405.CrossRefGoogle Scholar
Edgerton, C. W. (1959) Sugarcane And Its Diseases. L. S. U. Press, Baton Rouge, LA.Google Scholar
Fisher, A. G. (1960) Latitudinal variations in organic diversity. Evolution 14, 64–81.CrossRefGoogle Scholar
Fisher, B. B., Burtch, L. M. and Smith, R. (1977) The role of selective herbicides in sugar beet production. U. C. Coop. Ext. Fresno Co. Runcina Vol. 14.Google Scholar
Flynn, J.L., Reagan, T. E. and Ogunwolu, E. O. (1984) Establishment and damage of the sugarcane borer (Lepidoptera:Pyralidae) in corn as influenced by plant development. J. econ. Entomol. 77, 691– 697.CrossRefGoogle Scholar
Forbes, I. L., Giamalva, M. and Falgout, B. (1967) Mosaic found in johnsongrass in the Louisiana sugarcane area. Sugar Bull. 45, 278.Google Scholar
Foster, M. A. and Ruesink, W. G. (1984) Influence of flowering weeds associated with reduced tillage in corn on a black cutworm (Lepidoptera:Noctuidae) parasitoid, Meteorus rubens (Nees von Esenbeck). Environ. Entomol. 13, 664–668.CrossRefGoogle Scholar
Gaskin, T. A. (1958) Weed hosts of Meloidogyne incognita in Indiana Plant Dis. Rep. 42, 802–803.Google Scholar
Gibson, I. A. S. and Jones, T. (1977) Monoculture as the origin of major forest pests and diseases, especially in the tropics and southern hemisphere. In Origins of Pest, Parasite, and Weed Problems (Edited by Cherrett, J. M. and Sagar, G. R.), pp. 139–161. Blackwell Sci. Publ., Oxford.Google Scholar
Gillaspie, A. G. Jr and Koike, H. (1973) Sugarcane mosaic virus and maize dwarf virus in Mexico infections of sugarcane and other grasses. Phytopathology 63, 1300–1307.CrossRefGoogle Scholar
Golden, A. M. and Birchfield, W. (1965) Meloidogyne graminicola (Heteroderidae) a new species of root knot nematode from grass. Proc. Helminthol. Soc. Wash. 32, 228–231.Google Scholar
Graham, S. A. (1956) Forest insects and the law of natural compensations. Can. Entomol. 88, 45–55.CrossRefGoogle Scholar
Greenslade, P. J. M. (1964) Pitfall trapping as a method for studying populations of Carabidae (Coleoptera). J. Anim. Ecol. 33, 301–310.CrossRefGoogle Scholar
Harper, J. L. (1969) The role of predation in vegetational diversity: Diversity and stability in ecological systems. Brookhaven Symp. Biol. 22, 48–61.Google Scholar
Harper, J. L. (1977) Population Biology of Plants. Academic Press, New York.Google Scholar
Hatley, C. L. and McMahon, J. A. (1980) Spider community organization: Seasonal variation and the role of vegetation architecture. Environ. Entomol. 9, 632–639.CrossRefGoogle Scholar
Hensley, S. D. (1971) Management of sugarcane borer populations in Louisiana—a decade of change. Entomophaga 16, 133–146.CrossRefGoogle Scholar
Hensley, S. D., Long, W. H., Roddy, L. R., McCormick, W. J. and Cancienne, E. J. (1959) Pitfall trap collection for sugarcane fields. Insect Conditions in Louisiana 2, 17–24.Google Scholar
Hensley, S. D., Long, W. H., Roddy, L. R., McCormick, W. J. and Canciennne, E. J. (1961) Effects of insecticides on the predaceous arthropod fauna of Louisiana sugarcane fields. J. econ. Entomol. 54, 146–149.CrossRefGoogle Scholar
Hogger, C. H. and Bird, G. W. (1974) Weeds and covercrops as overwintering hosts of plant-parasitic nematodes of soybeans and cotton in Georgia. J. Nematol. 6, 142–143.Google Scholar
Humelen, P. J. (1974) Relations Between Two Rice Borers in Surinam, Rupela albinella (R.) and Diatraea saccharalis (F.), and Their Hymenopterous Larval Parasites. H. Veenman and B. V. Zonen, Wageningen, The Netherlands.Google Scholar
Ingram, J. W. and Summers, E. M. (1936) Transmission of sugarcane mosaic by the rusty plum aphid Hysteroneura setaria (Thos.). J. Agric. Res. 52, 879–887.Google Scholar
Ingram, J. W. and Summers, E. M. (1936) Transmission of sugarcane mosaic by the rusty plum aphid Hysteroneura setaria (Thos.). J. Agric. res. 52, 879–887.Google Scholar
Ingram, J. W. and Summers, E. M. (1938) Transmission of sugarcane mosaic by the green bug Toxoptera graminae (Rond.). J. Agric. Res. 56, 537–540.Google Scholar
Ingram, J. W. and Bynum, E. K. (1941) The Sugarcane Borer. U. S. Dept. Agric. Bull. 1884.Google Scholar
Ingram, J. W., Bynum, E. K., Mathes, R., Haley, W. E. and Charpentier, W. E. (1951) Pests of sugarcane and their control. U. S. Dept. Agric., circular no. 878.Google Scholar
Kirst, L. D. and Hensley, S. D. (1974) A study of overwintering populations of Diatraea saccharalis (F.) in Louisiana. Proc. I.S.S.C.T. 15, 475–487.Google Scholar
Koike, H. (1974) Interaction between diseases on sugarcane: Sugarcane mosaic and ratoon stunting disease. Proc. I.S.S.C.T. 15, 258–265.Google Scholar
Komblas, K. N. (1964) Field studies of aphid vectors of sugarcane mosaic and methods of control. Ph. D. dissertation, Louisiana State University.Google Scholar
Laster, M. L. (1974) Increasing natural enemy resources through crop rotation and strip cropping. Proc. Summer Inst. of Biocontrol of Plant Insects and Disease, pp. 137–143.Google Scholar
Leeper, J. R. (1974) Adult feeding behaviour of Lixophaga sphenophori, a tachinid parasite of the New Guinea sugarcane weevil. Proc. Hawaii Entomol. Soc. 21, 403–412.Google Scholar
Letourneau, D. K. (1986) Associational resistance in squash monocultures and polycultures in tropical Mexico. Environ. Entomol. 15, 285–292.CrossRefGoogle Scholar
Lewis, S. E. and McClure, M. A. (1975) Free amino acids in roots of infected cotton seedlings resistant and susceptible to Meloidogyne incognita. J. Nematol. 7, 10–15.Google ScholarPubMed
Long, C. S., Cancienne, E. A., Cancienne, E. J., Dobson, R. W. and Newsom, L. D. (1958) Fire ant eradication program increases damage by the sugarcane borer. Sugar Bull. 37, 62–63.Google Scholar
Long, C. S., Hensley, S. D., Cancienne, E. J. and McCormick, W.J. (1960) Ants found in Louisiana sugarcane fields. Insect Conditions in Louisiana 3, 20–21.Google Scholar
Luckman, W. H. and Metcalf, R. L. (1975) The pest management concept. In Introduction to Pest Management (Edited by Metcalf, R. L. and Luckman, W. H.), Wiley and Sons, New York.Google Scholar
Mangan, R. L., Byers, R. A., Wutz, A. and Templeton, W. C. Jr. (1982) Host plant associations of insects collected in swards with and without legumes seeded by minimum tillage. Environ. Entomol. 11, 255–260.CrossRefGoogle Scholar
Manuel, J. S., Bendixon, L. E., Reynolds, D. A. and Riedel, R. M. (1980) Weeds as hosts of Pratylenchus. Ohio Agric. Res. and Dev. Center Res. Bull. 1123.Google Scholar
May, R. M. (1981) Theoretical Ecology, 2nd Ed.Sinauer Publ. Southerland, Mass.Google Scholar
McWhorter, C. G. (1972) Factors affecting johnsongrass rhizome production and germination. Weed Sci. 20, 41–45.CrossRefGoogle Scholar
McWhorter, S. G. and Anderson, J. M. (1981) The technical and economic effects of johnsongrass (Sorghum halepense) control in soybeans (Glycine max). Weed Sci. 29, 245–253.CrossRefGoogle Scholar
Mitchell, W. C. (1972) Biological control of macadamia insect pests in Hawaii. Hawaii Macadamia Producers Assoc. Proc. 2, 38–44.Google Scholar
Negm, A. A. and Hensley, S. D. (1967) The relationship of arthropod predators to crop damage inflicted by the sugarcane borer. J. econ. Entomol. 60, 1503–1506.CrossRefGoogle Scholar
Negm, A. A. and Hensley, S. D. (1969) Evaluation of certain biological control agents of the sugarcane borer in Louisiana. J. econ. Entomol. 62, 1003–1013.CrossRefGoogle Scholar
Noling, J. W. (1987) Partitioning of crop losses. In Vistas on Nematology: A Commemoration of the Twenty-fifth Anniversary of the Society of Nematologists (Edited by Veech, J. A. and Dickson, D. W.), pp. 64–72. Society of Nematologists, Hyattsville, MD.Google Scholar
Nordlund, D. A., Chalfont, R. B. and Lewis, W. J. (1984) Arthropod populations, yield and damage in monocultures and polycultures of corn, beans and tomatoes. Agric, Ecosyst. Environ. 11, 353–367.Google Scholar
Odum, E. P. (1971) Fundamentals of Ecology. Saunders, Philadelphia, PA.Google Scholar
Ogunwolu, E. O., Reagan, T. E. and Damann, K. E. Jr (1987) Efficacy of pest control strategies in Louisiana sugar cane: A preliminary survey. J. Agric. Sci. Cambr. 108, 661–665.CrossRefGoogle Scholar
Oliver, A. D., Reagan, T. E. and Burns, E. C. (1979) The fire ant—an important predator of some agricultural pests. La. Agric. 22, 6–7.Google Scholar
Oliver, B. F., Gifford, J. R. and Trahan, G. B. (1971) Differential infestation of rice lines by the rice stalk borer. J. econ. Entomol. 65, 711–713.CrossRefGoogle Scholar
Oloumi-Sadeghi, H., Zavaleta, L. R., Lamp, W. D., Armbrust, E. J. and Kapusta, G. (1987) Interactions of the potato leafhopper (Homoptera:Cicadellidae) with Weeds in an alfalfa ecosystem. Environ. Entomol. 16, 1175– 1180.CrossRefGoogle Scholar
Pemberton, C. E. and Charpentier, L. J. (1969) Insect vectors of sugarcane virus diseases. In Pests of Sugarcane (Edited by Pemberton, C. E. and Charpentier, L. J.), Elsevier, Amsterdam.Google Scholar
Peng, S. Y. (1984) The Biology and Control of Weeds in Sugarcane. Elsevier, Amsterdam.Google Scholar
Pimentel, D. (1961) Species diversity and insect population outbreaks. Ann. Entomol. Soc. Am. 54, 76–86.CrossRefGoogle Scholar
Pinochet, J. (1987) Management of plant parasitic nematodes in Central America: The Panama experience. In Vistas on Nematology: A Commemoration of the Twenty-fifth Anniversary of the Society of Nematologists (Edited by Veecher, J. A. and Dickson, D. W.), pp. 105–113. Society of Nematologists, Hyattsville, MD.Google Scholar
Pollet, D. K., Reagan, T. E., White, B., and Rester, D. C. (1988) Pest Management of Sugarcane Insects (revised edition 6/88). LA Coop. Ext. Publ. No. 1982.Google Scholar
Ramirez, A. (1981) Pathogenic evaluation of the nematode Tylenchorhynchus annulatus on sugarcane in Costa Rica. Inter Amer. Sugarcane Seminar: Insect and Rodent Pests 2, 159–164.Google Scholar
Reagan, T. E. (1980) A pest management system for sugarcane insects. La. Agric. 24, 112–114.Google Scholar
Reagan, T. E., Coburn, C. and Hensley, S. D. (1972) Effects of mirex on the arthropod fauna of a Louisiana sugarcane field. Environ. Entomol. 1, 588–591.CrossRefGoogle Scholar
Reagan, T. E., Hensley, S. D., Huffman, F. R. and Fuchs, T. W. (1979) Response to insecticides of the sugarcane borer in Louisiana and Texas. J. econ. Entomol. 72, 94–96.CrossRefGoogle Scholar
Reagan, T. E. and Flynn, J. L. (1985) Insect pest management of sweet sorghum in sugarcane production systems of Louisiana: Problems and integration. Biomass Energy Development. Plenum, New York.Google Scholar
Reynolds, H. T., Adkisson, P. L. and Smith, R. F. (1975) Cotton pest management. In Introduction To Pest Management (Edited by Metcalf, R. L. and Luckman, W. H.), pp. 379–443. Wiley and Sons, New York.Google Scholar
Riechert, S. E. and Lockley, T. (1984) Spiders as biocontrol agents. A. Rev. Entomol. 29, 299–320.CrossRefGoogle Scholar
Risch, S. J. (1979) A comparison.by sweep sampling, of the insect fauna from corn and sweet potato monocultures and dicultures in Costa Rica. Oecologia 42, 195–211.CrossRefGoogle Scholar
Risch, S. J. (1980) Fewer beetle pests on beans and cowpeas interplanted with banana in Costa Rica. Turrialba 30, 229–230.Google Scholar
Risch, S. J. (1981) Insect herbivore abundance in tropical monocultures and polycultures: An experimental test of two hypotheses. Ecology 62, 1325–1340.CrossRefGoogle Scholar
Root, R. B. (1973) Organization of a plant-arthropod association in simple and diverse habitats: The fauna of collards (Brassica oleracea). Ecol. Monogr. 43, 95–124.CrossRefGoogle Scholar
Routley, D. G. (1966) Proline accumulation in wilted ladino clover leaves. Crop Sci. 6, 358–361.CrossRefGoogle Scholar
Ryan, J., Ryan, M. F. and McNaeidhe, F. M. (1980) The effect of interrow plant cover on populations of the cabbage root fly, Delia brassicae (Wiedemann). J. Appl. Ecol. 17, 31–40.CrossRefGoogle Scholar
Sheehan, W. (1986) Response by specialist and generalist natural enemies to agroecosystem diversification: A selective review. Environ. Entomol. 15, 456–461.CrossRefGoogle Scholar
Shepherd, R. J. (1965) Properties of a mosaic virus of corn and johnsongrass and its relation to the sugarcane mosaic virus. Phytopathology 55, 1250–1256.Google Scholar
Showier, A. T. (1987) Interactions of weed, nematode and arthropod management strategies with the Louisiana sugarcane agroecosystem: A holistic perspective. Ph. D. dissertation, Louisiana State University.Google Scholar
Showier, A. T. and Reagan, T. E. (1987) Ecological interactions of the red imported fire ant in the southeastern United States. J. Entomol. Sci. Suppl. 1, 52–64.Google Scholar
Showier, A. T., Knaus, R. M. and Reagan, T. E. (1989) Foraging territoriality of the imported fire ant, Solenopsis invicta Buren, in sugarcane as determined by neutron activation analysis. Insectes Sociaux 36, 235–239.CrossRefGoogle Scholar
Showler, A. T. and Reagan, T. E. (1990) Sugarcane borer, weed and nematode control strategy interactions with Louisiana sugarcane arthropod fauna and yield. Environ. Entomol. (in press).CrossRefGoogle Scholar
Showier, A. T., Reagan, T. E. and Shao, K. P. (1990a) Nematode interactions with weeds and sugarcane mosaic virus in Louisiana sugarcane. J. Nematol. 22, 31–38.Google Scholar
Showier, A. T., Reagan, T. E. and Flynn, J. L. (1990b) Augmentation and aldicarb treatment of nematodes in selected sugarcane weed habitats. Ann. Appl. Nematol. (in press).Google Scholar
Smith, J. G. (1969) Some effects of crop background on populations of aphids and their natural enemies on brussels sprouts. Proc. Assoc. Appl. Biol. 63, 326–330.CrossRefGoogle Scholar
Smith, R. W. and Whittaker, J. B. (1980) The influence of habitat type on the population dynamics of Gastrophysa viridula DeGeer (Coleoptera: Chrysomelidae). J. Anim. Ecol. 49, 225–236.CrossRefGoogle Scholar
Steindl, D. R. L. (1957) Alternative hosts of ratoon stunting disease. Cane Growers Q. Bull. 20, 101.Google Scholar
Strong, D. R. Jr, McCoy, E. D. and Rey, J. R. (1979) Time and the number of herbivore species: The pests of sugarcane. Ecology 58, 167–175.CrossRefGoogle Scholar
Tate, H. D. and Vandenberg, S. R. (1939) Transmission of sugarcane mosaic by aphids. J. Agric. Res. 59, 73–79.Google Scholar
Todd, E. H. (1964) Sugarcane mosaic on St. Augustine grass. U.S. Agric. Res. Serv. Plant Dis. Rep. 48, 442.Google Scholar
Topham, M. and Beardsley, J. W. (1975) Influence of nectar source plants on the New Guinea weevil parasite, Lixophaga sphenophori (Villeneuve). Proc. Hi. Entomol. Soc. 22, 145–154.Google Scholar
Wang, C. H., Willis, D. L. and Loveland, W. D. (1975) Radiotracer Methodology in the Biological, Environmental, and Physical Sciences. Prentice-Hall, Englewood Cliffs, New Jersey.Google Scholar
Way, M. J. (1977) Pest and disease status in mixed stands vs. monocultures; the relevance of ecosystem stability. In Origins of Pest, Parasite, Disease and Weed Problems (Edited by Cherrett, J. M. and Sagar, G. R.), pp. 127–138. Blackwell Scientific Pub., London.Google Scholar
Waraitch, K. S. (1982) Effect of doses and time of application of nematicides on sugarcane yield. Indian Sugar 32, 449–453.Google Scholar
White, T. R. C. (1984) The abundance of invertebrate herbivores in relation to the availability of nitrogen in stressed food plants. Oecologia 63, 90–105.CrossRefGoogle Scholar
Wilcox-Lee, D. and Loria, R. (1987) Effects of nematode parasitism on plant-water relations. In Vistas on Nematology: A Commemoration of the Twenty-fifth Anniversary of the Society of Nematologists (Edited by Veech, J. A. and Dickson, D. W.), pp. 260–266. Society of Nematologists, Hyattsville, MD.Google Scholar
Zandstra, B. H. and Motooka, P. S. (1978) Beneficial effects of weeds in pest management—a review. PANS 24, 333–338.CrossRefGoogle Scholar