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Biological Control and Its Integration in Weed Management Systems for Purple and Yellow Nutsedge (Cyperus rotundus and C. esculentus)

Published online by Cambridge University Press:  12 June 2017

Sharad C. Phatak ,
M. Brett Callaway  and
Charles S. Vavrina
Sharad C. Phatak
Affiliation:
Dep. Hort., Coastal Plain Exp. Stn., Univ. Georgia, Tifton, GA 31793
M. Brett Callaway
Affiliation:
Dep. Hort., Coastal Plain Exp. Stn., Univ. Georgia, Tifton, GA 31793
Charles S. Vavrina
Affiliation:
Dep. Hort., Coastal Plain Exp. Stn., Univ. Georgia, Tifton, GA 31793
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Extract

Observations of the effects of living organisms on weeds dates from 1795 when an insect, Dactylopius ceylonicus, was introduced for drooping pricklypear (Opuntia vulgaris Miller) control over a vast area. Since that time, biological control of weeds employed mainly the classical strategy of introducing natural enemies from areas of co-evolution. Self-perpetuation and dissemination of these introduced enemies was essential to suppress successfully the weed below economic levels. This classical tactic is suited particularly for weeds that are distributed widely in less intensively cropped or noncropped areas. Guidelines to introduce foreign organisms for biological control of weeds in the United States have been established.

Type
Symposium
Information
Weed Technology , Volume 1 , Issue 1 , January 1987 , pp. 84 - 91
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

Literature Cited

1. Abushama, F.T. E., and Elhag, E.A.G. 1971. Distribution and food-plant selection of the riverain Acridids near Khartoum. Zeitschrift fur Angewandte Entomologie. 69:212–221.CrossRefGoogle Scholar
2. Abushama, F. T., and Elkhider, E.T.M. 1976. Food preference of the acridid grasshopper Truxalis grandis grandis (Klug). Acida 5:245–255.Google Scholar
3. Adams, A. N. 1967. A host plant list of Malawi aphids (Aphididae, Homoptera). Rhod. Zambia Malawi J. Agric. Res. 5:185–187.Google Scholar
4. Albajes, R., and Garcia-Baudin, J. M. 1979. The genus Bactra, possible agent for the control of Cyperus spp. in Spain. Pages 508–512 in Report. Center for Agric. Ent., Polytechnique Univ. Barcelona, Lieida, Spain.Google Scholar
5. Alcorn, J. L., and Pont, W. 1973. Races of Drechslera maydis in Queensland. Aust. J. Exp. Agric. Anim. Husb. 13:213–215.CrossRefGoogle Scholar
6. Andres, L. A. 1981. Biological control of naturalized and native plants: Conflicting interests. Pages 341–349 in Papavizas, G. C., ed. Biological Control in Crop Production (Beltsville Agric. Res. Center Symp. No. 5). Allanheld, Osmun and Co., Totowa, NJ.Google Scholar
7. Andres, L. A. 1982. Integrating weed biological control agents into a pest-management program. Weed Sci. 30 (Suppl. 1):25–30.Google Scholar
8. Andres, L. A., Davis, C. J., Harris, P., and Waphere, A. J. 1976. Biological control of weeds. Pages 481–499 in Huffaker, C. B. and Messenger, P. S., eds. Theory and Practice of Biological Control. Academic Press, New York.Google Scholar
9. Anonymous. 1982. Report. Mauritius Sugar Ind. Res. Inst. Annu. Rep., p. 76.Google Scholar
10. Anonymous. 1947. Sugarcane smut disease. Problems of eradication. South Afr. Sugar J., 31:731–733.Google Scholar
11. Arthur, J. C. 1922. Uredinales collected by Fred J. Seaver in Trinidad. Mycologia 14:12–13, 240–241.Google Scholar
12. Ayquipa, A. G., and Sirlopu, R. J. 1977. Life-cycle, morphology and behaviour of Marasmia trapezalis Guenee (Lepidoptera: Pyralidae). Saccharum 3:1–25.Google Scholar
13. Aziz, S. A., and Rizvi, S.K.A. 1967. New record of damage to certain important vegetable and medicinal plants by Oxya velox Fabr. (Orthoptera: Acrididae) in Aligarh, U. P. Labdev J. Sci. Technol. 5:341.Google Scholar
14. Bain, D. C. 1964. Sclerotinia blight on nutgrass in Mississippi. Plant Dis. Rep. 48:742.Google Scholar
15. Barrion, A. T., and Litsinger, J. A. 1980. Euscyrtus concinnus (Orthoptea: Gryllida)–a new rice pest in the Philippines. Research Newsletter 5(5):19. Int. Rice Res. Inst., Los Banos, Philippines.Google Scholar
16. Beisler, J. M., Pienkowski, R. L., Kok, L. T., and Robinson, W. H. 1977. Insects associated with three weedy grasses and yellow nutsedge. Environ. Entomol. 6:455–459.CrossRefGoogle Scholar
17. Betria, A. I. 1973. Biology of purple nutsedge (Cyperus rotundus). Rev. Fac. Agron., Univ. Nac. La Plata 49(2):181–199.Google Scholar
18. Brimblecombe, A. R. 1966. The occurrence of the genus Antonina (Homoptera: Coccodiea) in Queensland. J. Entomol. Soc. Queensl. 5:5–6.Google Scholar
19. Brown, E. S. 1965. Army worm research. Rec. Res. East Afr. Agric. For. Res. Cent. p. 24–36.Google Scholar
20. Callaway, M. B., Phatak, S. C., and Wells, H. D. 1985. Effect of rust and rust-herbicide combinations on yellow nutsedge. Proc. South. Weed Sci. Soc. 38:131.Google Scholar
21. Castellani, E. 1941. On the presence of pluricellular teleutospores in Puccinia canaliculata (Schw.) Lagerh. Nuovo G. Bot. Ital. (Nuova Ser.) 48:658–661.Google Scholar
22. Castellani, E. 1946. On two diseases of Cyperus rotundus L. Agricoltura colon. 36(6):7.Google Scholar
23. Charudattan, R., and Walker, H. L. 1982. Biological control of weeds with plant pathogens. John Wiley and Sons, New York.Google Scholar
24. Chattopadhyay, S. B., and Mukherjee, N. 1968. Occurrence in nature of collateral hosts (Cyperus rotundus and C. diffornis) of Xanthomonas oryzae, incitant of bacterial blight of rice. Curr. Sci. (Bangalore) 37(15):441.Google Scholar
25. Chaudhary, J. P. 1977. First record of Bactra minima Meyr. (Tortricidae: Lepidoptera) on nutgrass. Indian J. Entomol. 39:90–91.Google Scholar
26. Chen, C. T., Lee, C. S., and Lee, S. M. 1971. Beneficial effects of white leaf infected plants on the leafhopper, Matsumuratettix hiroglyphicus Matsumura. In Henderson, M. T. ed. Proc. Int. Soc. Sugar Cane Technol., Fourteenth Congress, New Orleans, LA. p. 434–438.Google Scholar
27. Commonwealth Institute of Biological Control. 1968–69. Biologies and host-plant ranges of insects that attack noxious weeds common to Pakistan and the United States. Rep. Pakistan Stn., Commonw. Inst. Biol. Control, p. 32.Google Scholar
28. Dabek, A. J. 1979. Cyperus rotundus, the natural host of the leafhopper Sanctanus fasciatus in Jamaica. FAO Plant Prot. Bull. 27:123–124.Google Scholar
29. Das, N. P., and Mukherji, S. K. 1968. A stem rot and leaf drying of Cyperus tagetum Roxb. (matgrass) and its control. Z. Pflanzenlr. Pflanzenpathol. Pflanzenschutz. 75:683–686.Google Scholar
30. Dhawan, A. K., and Sajjan, S. S. 1977. Laboratory studies on the host-range of rice green leafhopper Nephotettix nigropictus (Stal.). J. Res. Punjah Agric. Univ. 14:188–192.Google Scholar
31. Ding, J. H., and Kuoh, C. L. 1981. New species of Stenocranus from China (Homoptera: Delphacidae). Acta Zootaxonomica Sin. 6:74–84.Google Scholar
32. Fernando, S.N.U. 1965. Insects commonly found in the teak nurseries of Ceylon. Ceylon For. 7:54–56.Google Scholar
33. Freitag, J. H. 1951. Plant pests of importance to North American Agriculture. Index of Plant Virus Diseases. USDA Agric. Handb. No. 307.Google Scholar
34. Frick, K. E. 1978. Purple nutsedge (Cyperus rotundus L.): a case for augmentation. Pages 145–151 in Freeman, T. E., ed. Proc. IV Int. Symp. Biol. Control of Weeds, Univ. Florida, Gainesville.Google Scholar
35. Frick, K. E., and Chandler, J. M. 1974. Culture and early release of Bactra verutana, a biological agent for purple nutsedge control. Abstr. Weed Sci. Soc. Am., p. 66–67.Google Scholar
36. Frick, K. E., and Chandler, J. M. 1978. Augmenting the moth (Bactra verutana) in field plots for early-season suppression of purple nutsedge (Cyperus rotundus). Weed Sci. 26:703–710.CrossRefGoogle Scholar
37. Frick, K. E., and Garcia, C. Jr. 1975. Bactra verutana as a biological control agent for purple nutsedge. Ann. Entomol. Soc. Am. 68:7–14.Google Scholar
38. Frick, K. E., and Quimby, P. C. Jr. 1977. Biocontrol of purple nutsedge by Bactra verutana Zeller in a greenhouse. Weed Sci. 25:13–17.Google Scholar
39. Frick, K. E., and Wilson, R. F. 1978. Larval biology of Bactra verutana, an indigenous biological control agent of the weedy nutsedges. Ann. Entomol. Soc. Am. 71:680–684.CrossRefGoogle Scholar
40. Garcia, C. Jr., and Frick, K. E. 1975. Bactra verutana, a possible biological control agent of purple and yellow nutsedge: large scale rearing on artificial diet. Ann. Entomol. Soc. Am. 68:15–18.Google Scholar
41. Goeden, R. D. 1977. Biological control of weeds. Pages 43–47 in Truelove, B., ed. Research Methods in Weed Sci., 2nd Ed. South. Weed Sci. Soc, Champaign, IL.Google Scholar
42. Goeden, R. D. 1978. Introduced parasites and predators of arthropod pests and weeds. Part II: Biological control of weeds. U.S. Dep. Agric. Handb. No. 480. p. 357–545.Google Scholar
43. Hallman, G. 1980. Natural hosts and enemies of Heliothis spp. in the cotton growing region of the Department of Tolima, Colombia. Turrialba 30:272–279.Google Scholar
44. Halsted, B. D. 1893. Fungi injurious to weed seedlings. New Jersey Exp. Stn. Rep. p. 326–327.Google Scholar
45. Halsted, B. D. 1894. Weeds and their most common fungi. New Jersey Exp. Stn. Rep. p. 379–381.Google Scholar
46. Hammerton, J. L. 1974. The biology and control of nutgrass. Univ. West Indies, Trinidad, W. Indies Ext. Bull. No. 10. p. 12.Google Scholar
47. Harpaz, I. 1961. Calligypona marginata, the vector of maize rough dwarf virus. FAO Plant Prot. Bull. 9:144–147.Google Scholar
48. Harpaz, I. 1966. Further studies on the vector relations of the maize rough dwarf virus (MRDV). Maydica 11:18–26.Google Scholar
49. Harten, A. van. 1976. Further notes on the aphid fauna of Sao Tome (Homoptera, Aphidoidea). Agron. Lusit. 37:163–165.Google Scholar
50. Harten, A. van. 1979. Sitobion hillerislambersi, a remarkable new aphid from Angola (Homoptera, Aphidoidea). Entomol. Ber. (Amst.) 39:168–172.Google Scholar
51. Hogger, C. H. 1976. Plant-parasitic nematodes associated with weeds and agronomic crops in Georgia. Dissertation Abstr. Intl. 36:3704–3705. Order No. 76 2236. Univ. Georgia, Athens.Google Scholar
52. Hogger, C. H., and Bird, G. W. 1976. Weed and indicator hosts of plant-parasitic nematodes in Georgia cotton and soybean fields. Plant Dis. Rep. 60:223–226.Google Scholar
53. Hollis, J. P. 1976. Rice yield loss caused by ring nematode revealed by elimination of yellow nutsedge (a preliminary report). 67th Annual Progress Rep., Rice Exp. Stn., Crowley, LA. p. 138–141.Google Scholar
54. Hollis, J. P. 1977. Loss in yield of rice caused by the ring nematode Criconemoides onoensis revealed by elimination of yellow nutsedge, Cyperus esculentus . Nematologica 23:71–78.Google Scholar
55. Husain, S. I., Al-Zarari, A. J., and Younis, H. 1978. Occurrence of a cyst nematode, Heterodera mothi Khan and Husain, 1965 in Iraq. Mesopotamia J. Agric. 13:143–151.Google Scholar
56. Iqbal, M., and Aziz, S. A. 1976. Food preference of Spathosternum prasiniferum Walker (Orthoptera: Acridoidea). Indian J. Entomol. 37:51–56.Google Scholar
57. Iswaran, V., and Sen, A. 1976. Effect of nibbling of inoculation of rice (Oryza sativa var. Jaya) with Azotobacter from nutgrass (Cyperus rotundus). Food Farming Agric. 7:17.Google Scholar
58. Jackson, H. S. 1926. The rusts of South America based on the Holway collections. Mycologia 18:139–144.Google Scholar
59. Johnson, W. M., and Brinkerhoff, L. A. 1976. Susceptibility of some crops and weeds to Verticillium dahliae Kleb. isolated from cotton. Proc. Beltwide Cotton Prod. Res. Conf. p. 21–22.Google Scholar
60. Julien, M. H. 1982. Biological control of weeds; A world catalogue of agents and their target weeds. Common. Agric. Bur. Farnham Royal, Sough, UK. p. 113, 245, 284.Google Scholar
61. Kern, F. D. 1919. North American rusts on Cyperus and Eleocharis . Mycologia 11:134–147.Google Scholar
62. Khan, A. G., Mushtaque, M., Habib, R., and Ghani, M. A., 1971. Biologies and host-plant ranges of insects attacking noxious weeds (for the USA). Rep., Commonw. Instit. Bio. Control 1970. p. 67–68.Google Scholar
63. Klingman, D. L., and Coulson, J. R. 1982. Guidelines for introducing foreign organisms into the United States for biological control of weeds. Plant Dis. 66:1205–1209 and Weed Sci. 30:661–667.Google Scholar
64. Kurstak, E., ed. 1982. Microbial and Viral Pesticides. Marcel Dekker, Inc., New York.Google Scholar
65. Launois-Luong, H. 1975. The influence of conditioning in the adult stage on the reproduction of the migratory locust Locusta migratoria capito Sauss. in the insectary in south-western Madagascar. Stn. Acridienne, Beticky-Sud, Malagasy, Republic. p. 117–157.Google Scholar
66. Ling, L. 1950. Studies in the genus Cintractia. II. C. axicola and related species. Mycologia 42:646–653.Google Scholar
67. Loveless, A. R. 1967. A new species of Claviceps on Cyperaceae. Trans. Br. Mycol. Soc. 50:19–22.Google Scholar
68. Luttrell, E. S. 1954. An undescribed species of Piricularia on sedges. Mycologia 46:810–814.Google Scholar
69. Mailum, N. P., and Divinagracia, G. G. 1969. Leaf spot of Ginger in the Philippines. Philipp. Agric. 53:202–217.Google Scholar
70. Majeed, Q., and Aziz, S. A. 1983. Food preference of different stages of Gastrimargus transversus Thunberg (Orthoptera: Acrididae) under controlled conditions of temperature and relative humidity. J. Entomol. Res. (New Delhi) 5:60–65.Google Scholar
71. Mangoendihardjo, S. 1975. Prospects of biological control of weeds in Indonesia. Proc. 3rd Indonesian Weed Sci. Conf., Bandung. p. 33–41.Google Scholar
72. Mangoendihardjo, S., and Soerjani, M. 1979. Weed management through biological control in Indonesia. In Amin, L. L., Kader, A.A.S.A., Lim, G. S., Singh, K. G., Tan, A. M., and Varghese, G., eds. Proc. Plant Protec. Conf., Kuala Lampur, Malaysia. p. 323–337.Google Scholar
73. Meneses-Carbonell, R., and Gomez Sousa, J. 1981. Survival of Lissorhoptrus brevirostris (Suffr.) (Coleoptera: Curculionidae) on different food-plants in the rice-growing region of southern Sancti Spiritus, Cuba. Cent. Agric. 6:3–12.Google Scholar
74. Misra, A. P., Parkash, O. M., Mishra, B., and Dutta, K. K. 1972. A note on a new leaf spot disease of motha (Cyperus rotundus L.) caused by Curvularia tuberculata Jain. Indian J. Weed Sci. 4:57–59.Google Scholar
75. Misra, A. P., Prakesh, O. M., Mishra, B., and Dutta, K. K. 1973. A new leaf spot of motha (Cyperus rotundus) caused by Curvularia tuberculata . Indian Phytopathol. 26:165–167.Google Scholar
76. Moore, G. C., and Mueller, A. J. 1976. Biological observation of the threecornered alfalfa hopper on soybean and three weed species. J. Econ. Entomol. 69:14–16.Google Scholar
77. Namba, R., and Higa, S. Y. 1971. Host plant studies of the corn planthopper, Peregrinus maidis (Ashmead), in Hawaii. Proc. Hawaii. Entomol. Soc. 21:105–108.Google Scholar
78. Pant, D. D., Nautiyal, D. D., and Chaturvedi, S. K. 1982. Insect pollination in some Indian Glumiflorae. Beitr. Biol. Pflanz. 57:229–236.Google Scholar
79. Patterson, R. S., Smittle, B. J., and DeNeve, R. T. 1969. Feeding habits of male southern house mosquitoes on 32 P-labeled and unlabeled plants. J. Econ. Entomol. 62:1455–1458.Google Scholar
80. Pencoe, N. L., and Martin, P. B. 1981. Development and reproduction of fall armyworms on several wild grasses. Environ. Entomol. 10:999–1002.Google Scholar
81. Pencoe, N. L., and Martin, P. B. 1982. Fall armyworm (Lepedoptera: Noctuidae) larval development and adult fecundity on five grass hosts. Environ. Entomol. 11:720–723.Google Scholar
82. Phatak, S. C. 1984. Knock out nutsedge. Am. Veg. Grower 32(6):44–46.Google Scholar
83. Phatak, S. C., Sumner, D. R., Wells, H. D., Bell, D. K., and Glaze, N. C. 1983. Biological control of yellow nutsedge with the indigenous rust fungus Puccinia canaliculata . Science 219:1446–1447.Google Scholar
84. Pillai, K. S., and Nair, M.R.G.K. 1979. Biology and habits of the rice case worm Nymphula depunctalis Guen. in Kerala. Entomology. 4:13–16.Google Scholar
85. Pitre, H. N., and Boyd, F. J. 1970. A study of the role of weeds in corn fields in the epidemiology of corn stunt disease. J. Econ. Entomol. 63:195–197.Google Scholar
86. Poinar, G. O. Jr. 1964. Observations on nutgrass insects in Hawaii with notes on the host range of Bactra truculenta Meyrick and Athesapeuta cyperi Marshall. Proc. Hawaii. Entomol. Soc. 18:417–423.Google Scholar
87. Poinar, G. O. Jr. 1964. Studies on nutgrass insects in southern California and their effectiveness as biological control agents. J. Econ. Entomol. 57:379–383.Google Scholar
88. Prasada-Rao, R.D.V.J., and John, V. T. 1974. Alternate hosts of rice tungro virus and its vector. Plant Dis. Rep. 58:856–860.Google Scholar
89. Purohit, S. D., Ramawat, K. G., and Arya, H. C. 1979. Polyphenols and some oxidative enzymes in rust infected leaves of Cyperus rotundus . Indian Phytopathol. 32:255–259.Google Scholar
90. Quimby, P. C., and Frick, K. E. 1980. Control of nutsedge with glyphosate treated Bactra . Proc. South. Weed Sci. Soc. 33:195.Google Scholar
91. Quimby, P. C., and Walker, H. L. 1982. Pathogens as mechanisms for integrated weed management. Weed Sci. 30(Suppl.1):30–34.Google Scholar
92. Ramirez, S. A., and Bendixen, L. E. 1982. Multifaceted effects of yellow nutsedge on crops. Proc. North Cent. Weed Control Conf. 37:48–49.Google Scholar
93. Rao, V. P., Ghani, M. A., Sankaran, T., and Mathur, K. C. 1971. Review of biological control of insects and other pests in Southeast Asia and Pacific region. Commow. Inst. Biol. Control Tech. Commun. 6:59–95.Google Scholar
94. Russell, L. M. 1964. A new species of Aleurocybotus (Homoptera: Aleyrodidae). Proc. Entomol. Soc. Wash. 66:101–102.Google Scholar
95. Safeeulla, K. M., and Govindu, H. C. 1950. Cintractia minor on three species of Cyperus in Mysore. Curr. Sci. (Bangalore) 19:325–326.Google Scholar
96. Sankaran, T., and Rao, V. P. 1972. An annotated list of insects attacking some terrestrial and aquatic weeds in India, with records of some parasites of the phytophagous insects. Tech. Bull. Commonw. Inst. Biol. Control 15:131–157.Google Scholar
97. Sankaran, T., and Srinath, D. 1966. Observations on the biology of Bactra (Nannobactra) minima minima Meyrick and the damage caused by it to nutgrass, Cyperus rotundus L. Tech. Bull. Commonw. Inst. Biol. Control 7:139–147.Google Scholar
98. Sawada, K. 1927. Descriptive catalogue of the Formosan fungi. Part III. Rep. Dep. Agric. Res. Inst. Formosa 27:73.Google Scholar
99. Saxena, D. K. 1976. Some new host plants of Ferrisia virgata Cockrell. Indian J. Entomol. 36:367.Google Scholar
100. Scheepens, P. C., and van Zon, H.C.J. 1982. Microbial herbicides. Pages 623–641 in Kurstak, E., ed. Microbial and Viral Pesticides. Marcel Dekker, Inc., New York.Google Scholar
101. Seethalakshmi, K. V. 1953. Blight of Cyperus rotundus L. and C. bulbosus Vahl. Indian Phytopathol. 6:57–62.Google Scholar
102. Sirohi, H. S., and Dublish, P. K. 1981. Eudarluca caracis on Puccinia conclusa – a new host record for India. Indian Phytopathol. 34:84.Google Scholar
103. Smith, C. F. 1980. Notes and keys to the species of Carolinaia (Homoptera: Aphididae). Proc. Entomol. Soc. Wash. 82:312–318.Google Scholar
104. Standley, P. C. 1916. Fungi of New Mexico. Mycologia 8:142, 157.Google Scholar
105. Story, R. N., and Robinson, W. H. 1979. Biological control potential of Taphrocerus schaefferi (Coleoptera: Buprestidae), a leaf-miner of yellow nutsedge. Environ. Entomol. 8:1088–1091.Google Scholar
106. Story, R. N., Robinson, W. H., Pienkowski, R. L., and Kok, L. T. 1979. The biology and immature stages of Taphrocerus schaefferi, a leaf miner of yellow nutsedge. Ann. Entomol. Soc. Am. 72:93–98.Google Scholar
107. Templeton, G. E. 1982. Status of weed control with plant pathogens. Pages 29–44 in Charudattan, R. and Walker, H. L., eds. Biological Control of Weeds with Plant Pathogens. John Wiley and Sons, New York.Google Scholar
108. Templeton, G. E., and Smith, R. J. Jr. 1977. Managing weeds with pathogens. Pages 167–176 in Horsfall, J. G. and Cowling, E. B., eds. Plant Disease: An Advanced Treatise. Vol. 1. Academic Press, New York.Google Scholar
109. Templeton, G. E., TeBeest, D. O., and Smith, R. J. Jr. 1979. Biological weed control with mycoherbicides. Annu. Rev. Phytopathol. 17:301–310.Google Scholar
110. Tripathi, R. L. 1969. A new record of a beneficial insect, Laspeyresia perfricta Meyrick [Lep., Olethreutidae] on the nutgrass, Cyperus rotundus L. (Cyperaceae). Indian J. Entomol. 31:296.Google Scholar
111. Tsai, J. H., and Kirsch, O. H. 1978. Bionomics of Haplaxius crudus (Homoptera: Cixiidae). Environ. Entomol. 7:305–308.Google Scholar
112. Tyron, H. 1910. The wild cochineal insect, with reference to its injavrious action on prickly pear (Opuntia spp.) in India etc. and to its availability for subjugation of this plant in Queensland and elsewhere. Queensl. Agric. J. 25:188–197.Google Scholar
113. United States Dep. Agric. Plant pests of importance to North American agriculture. Index of Plant Virus Disease. Agric. Handb. 307. p. 33.Google Scholar
114. Venkataraman, S., and Sengupta, T. K. 1981. Occurrence and significance of an alternate host for Meloidogyne graminicola (Cyperus rotundus). Oryza 18:231–232.Google Scholar
115. Verma, S. K. 1983. Host plants of Amsacta moorei Butler in the Rajasthan Desert. Bull. Entomol. 24:49–50.Google Scholar
116. Verma, G. S., Pandey, U. K., and Pandey, M. 1982. Note on insecticidal properties of some plants against Bagrada cruciferarum Kirk. (Hemiptera: Pentatomidae). Indian J. Agric. Sci. 52:263–265.Google Scholar
117. Viraktamath, C. A., Puttarudriah, M., and ChannaBasavanna, G. P. 1974. Studies on the biology of rice case-worm Nymphula depunctalis Guenee (Pyraustidae: Lepidoptera). Mysore J. Agric. Sci. 8:234–241.Google Scholar
118. Wang, T. K. 1978. The biology and control of Bactra phaeopis Meyrick (Tortricidae). Acta Entomol. Sin. 21:407–414.Google Scholar
119. Wapshere, A. J. 1979. Recent progress in the biological control of weeds. EPPO (Eur. Mediterr. Plant Prot. Organ.) Bull. 9(1):95–105.Google Scholar
120. Weiss, F. 1950. Index of plant diseases in the United States. Special Publication of the Plant Disease Survey. U.S. Dep. Agric, No. 1, Part II. p. 291–292.Google Scholar
121. Wilson, C. L. 1969. Use of plant pathogens in weed control. Annu. Rev. Phytopathol. 7:411–434.Google Scholar
122. Wright, R. J., van Duyn, J. W., and Bradley, J. R. Jr. 1982. Host range of southern corn billbug (Coleoptera: Curculionidae) adults and larvae. Environ. Entomol. 11:954–957.Google Scholar
123. Wright, R. J., van Duyn, J. W., and Bradley, J. R. Jr. 1983. Seasonal phenology and biology of the southern corn billbug in eastern North Carolina. J. GA Entomol. Soc. 18:376–385.Google Scholar
124. Yen, J. M. 1974. A study on the parasitic fungi of Southeast Asia. XXIII: Uredinales of the Philippines. Bull. Trimest. Soc. Mycol. France 90:195–200.Google Scholar
125. Zhang, G. X., and Zhong, T. S. 1983. New species of Chinese Aphidinae (Homoptera: Aphidadae). Entomotaxonomia 5:37–42.Google Scholar
126. Clay, K. 1986. New disease (Balansia cypri) of purple nutsedge (Cyperus rotundus). Plant Disease. 70:597–599.Google Scholar
127. Blaney, C. L., and Van Dyke, C. J. 1986. Conidial reproduction in culture by a Cercospora sp. from yellow nutsedge (Cyperus esculentus L.). Proc. South. Weed Sci. Soc. 39:386.Google Scholar