Spatial distribution pattern of Spodoptera exigua (Lepidoptera: Noctuidae) on sugar beet and advantage of site-specific spraying in the pest management

Document Type : Paper, English

Authors

1 Department of Plant Protection, College of Agriculture, Urmia University, Urmia, Iran.

2 Department of Plant Protection, Faculty of Agricultural Sciences, University of Mohaghegh Ardabili, Ardabil, Iran,

Abstract

Spodoptera exigua (Hübner) is a destructive insect pest of sugar beet globally. In this study, we utilized some geostatistical techniques to locate sample points and determine spatial distribution pattern of the pest. Pheromone traps were used to predict accurate time of oviposition and visual sampling was used to determine larval density. In order to predict the population density at non-sampled locations, Inverse Distance Weighting (IDW) and Ordinary Kriging (OK) techniques were used. The densities of different developmental stages of S. exigua were estimated weekly during August and September, 2016. The degree dependence values of S. exigua eggs in majority of dataset were larger than 76%, indicating their clumped distribution and strong spatial autocorrelation. Broadcast spraying was used when the density of the larvae in tracts overpassed the economic threshold. Also, we applied site-specific spraying to grid cells when larval densities were above the economic threshold. In most cases, larval mortality was not significantly different between broadcast spraying and site-specific spraying methods. Comparing two interpolation methods indicated that the data calculated for density of larvae and eggs of S. exigua were fitted better with OK model than IDW one. The findings of this research would be useful to develop sampling programs and to control S. exigua in Iran.

Keywords


Bentz, J., Reeves, J. B., Barbosa, P., & Francis, B. A. (1995) Within-plant variation in nitrogen and sugar content of poinsettia and its effects on the oviposition pattern, survival, and development of Bemisia argentifolii (Homoptera: Aleyrodidae). Environmental Entomology  24, 271-277.
Bernays, E. (1983) Nitrogen in defence against insects. Symposium of the British Ecological Society.
Bressan, A., Moral García, F., Sémétey, O., & BoudonPadieu, E. (2010) Spatio‐temporal pattern of Pentastiridius leporinus migration in an ephemeral cropping system. Agricultural and Forest Entomology 12, 59 -68.
Burris, E., Graves, J., Leonard, B., & White, C. (1994) Beet armyworms (Lepidoptera: Noctuidae) in northeast Louisiana, observations on an uncommon insect pest. Florida Entomologist  4, 454-459.
Duarte, F., Calvo, M., Borges, A., & Scatoni, I. B. (2015) Geostatistics and geographic information systems to study the spatial distribution of Grapholita molesta (Busck) (Lepidoptera: Tortricidae) in peach fields. Neotropical Entomology 44, 319-327.
Facknath, S. & Lalljee, B. (2005) Effect of soil‐applied complex fertiliser on an insect–host plant relationship: Liriomyza trifolii on Solanum tuberosum. Entomologia Experimentalis et Applicata 115, 67-77.
Fischer, K. & Fiedler, K. (2000) Response of the copper butterfly Lycaena tityrus to increased leaf nitrogen in natural food plants: evidence against the nitrogen limitation hypothesis. Oecologia  124, 235-241.
Fleischer, S. J., Blom, P. E., & Weisz, R. (1999) Sampling in precision IPM: when the objective is a map. Phytopathology 89, 1112-1118.
Greenberg, S. M., Sappington, T. W., Legaspi, B. C., Liu, T.-X., & Setamou, M. (2001) Feeding and life history of Spodoptera exigua (Lepidoptera: Noctuidae) on different host plants. Annals of the Entomological Society of America 94, 566-575.
Grego, C. R., Vieira, S. R., & Lourenção, A. L. (2006) Spatial distribution of Pseudaletia sequax Franclemlont in triticale under no-till management. Scientia Agricola 63, 321-327.
Gupta P. K. (2006) Soil, plant, water and fertilizer analysis. Agrobios India Publishing, pp 132-135.
Hassell, M. P. & May, R. M. (1974) Aggregation of predators and insect parasites and its effect on stability. Journal of Animal Ecology 43, 567-594.
Haukioja, E. & Neuvonen, S. (1985) Induced long‐term resistance of birch foliage against defoliators: defensive or incidental? Ecology  66, 1303-1308.
Hughes, G. & McKinlay, R. G. (1988) Spatial heterogeneity in yield-pest relationships for crop loss assessment. Ecological Modelling 41, 67-73.
Isaaks, E. H. & Srivastava, R. M. (1989) Applied geostatistics. Oxford University Press, PP 561.
Iwao, S. (1970) Analysis of contagiousness in the action of mortality factors on the western tent caterpillar population by using the the m-m relationship. Researches on Population Ecology 12, 100-110.
Jauset, A. M., Sarasua, M. J., Avilla, J., & Albajes, R. (2000) Effect of nitrogen fertilization level applied to tomato on the greenhouse whitefly. Crop Protection 19, 255-261.
Johnston, K., Ver Hoef, J. M., Krivoruchko, K., & Lucas, N. (2001) Using ArcGIS geostatistical analyst Esri Redlands. CA: ESRI Press.
Kaneshiro, L. N. & Johnson, M. W. (1996) Tritrophic effects of leaf nitrogen on Liriomyza trifolii (Burgess) and an associated parasitoid Chrysocharis oscinidis (Ashmead) on bean. Biological Control 6, 186-192.
Karimzadeh, R., Hejazi, M. J., Helali, H., Iranipour, S., & Mohammadi, S.A. (2011) Assessing the impact of site-specific spraying on control of Eurygaster integriceps (Hemiptera: Scutelleridae) damage and natural enemies. Precision Agriculture 12, 576-593.
Kjeldahl, J. (1883) A new method for the determination of nitrogen in organic matter. Zeitschrift für Analytische Chemie 22, 366-382.
Kravchenko, A. & Bullock, D. G. (1999) A comparative study of interpolation methods for mapping soil properties. Agronomy Journal  91, 393-400.
Liebhold, A. M., Zhang, X., Hohn, M. E., Elkinton, J. S., Ticehurst, M., Benzon, G. L., & Campbell, R. W. (1991) Geostatistical analysis of gypsy moth (Lepidoptera: Lymantriidae) egg mass populations. Environmental Entomology  20, 1407-1417.
Manuwoto, S. (1984) Feeding and growth of three lepidoptera species as influenced by natural and altered nutrients and allelochemicals in their diet, Ph.D. Thesis, Univ. Wisconsin, Madison.
Mascarenhas, V., Leonard, B., Burris, E., & Graves, J. (1996) Beet armyworm (Lepidoptera: Noctuidae) control on cotton in Louisiana. Florida Entomologist  79, 336-343.
Midgarden, D., Fleischer, S. J., Weisz, R., & Smilowitz, Z. (1997) Site-specific integrated pest management impact on development of esfenvalerate resistance in Colorado potato beetle (Coleoptera: Chrysomelidae) and on densities of natural enemies. Journal of Economic Entomology 90, 855-867.
Minkenberg, O. P. & Ottenheim, J. J. (1990) Effect of leaf nitrogen content of tomato plants on preference and performance of a leafmining fly. Oecologia  83, 291-298.
Muller, G., Schwinn, F. J. (1992) Manual for field trials in plant protection. 3rd (ed). CIBA-Geigy Ltd, Basle,Switzerland.
Ngai, J. T. & Jefferies, R. L. (2004) Nutrient limitation of plant growth and forage quality in Arctic coastal marshes. Journal of Ecology 92, 1001-1010.
Paech, K. & Tracey, M. V. (1955) Modern methods of plant analysis, Springer, 626 pp.
Park, Y. L. & Krell, R. K. (2005) Generation of prescription maps for curative and preventative site-specific management of bean leaf beetles (Coleoptera: Chrysomelidae), Journal of Applied Entomology 130, 337-342.
Park, Y. L. & Tollefson, J. J. (2006) Development and economic evaluation of spatial sampling plans for corn rootworm Diabrotica spp. (Col., Chrysomelidae) adults. Journal of Applied Entomology 130, 337-342.
Park, Y. L., Krell, R., & Carroll, M. (2007) Theory, technology, and practice of site-specific insect pest management. Journal of Asia-Pacific Entomology 10,  89-101.
Pedigo, L.P. & Buntin, G.D. (1994) Handbook of sampling methods for arthropods in agriculture. CRC Press, London, 714 PP.
Prado, P., Romero, J., & Alcoverro, T. (2010) Nutrient status, plant availability and seasonal forcing mediate fish herbivory in temperate seagrass beds. Marine Ecology Progress Series 409, 229-239.
Prestidge, R. (1982) Instar duration, adult consumption, oviposition and nitrogen utilization efficiencies of leafhoppers feeding on different quality food (Auchenorrhyncha: Homoptera). Ecological Entomology 7, 91-101.
Roush, R. T. & Daly, J. C. (1990) The role of population genetics in resistance research and management. Pesticide resistance in arthropods. Springer, pp 97-152.
SAS Institute Inc., S. (2003) Version 9.1. Qualification tools user’s guide. Cary, NC:SAS Institute Inc.
Schotzko, D. J. & Smith, C. M. (1991) Effects of host plant on the between-plant spatial distribution of the Russian wheat aphid (Homoptera: Aphididae). Journal of Economic Entomology 84, 1725-1734.
Schultz, J. C. & Baldwin, I. T. (1982) Oak leaf quality declines in response to defoliation by gypsy moth larvae. Science 217, 149-151.
Southwood, T. R. E. & Henderson, P. A. (2000) Absolute population estimates using capture-recapture experiments. In: Ecological Methods. 3rd edition. Blackwell Science Ltd, Oxford.
Tabashnik, B. E. (1989) Managing resistance with multiple pesticide tactics: theory, evidence, and recommendations. Journal of Economic Entomology 82, 1263-1269.
Weisz, R., Fleischer, S., & Smilowitz, Z. (1996) Site-specific integrated pest management for high-value crops: impact on potato pest management. Journal of Economic Entomology 89, 501-509.
Wier, A. T. & Boethel, D. J. (1995)  Feeding, growth, and survival of soybean looper (Lepidoptera: Noctuidae) in response to nitrogen fertilization of nonnodulating soybean. Environmental Entomology  24, 326-331.
Wright, D. J. & Verkerk, R. H. (1995) Integration of chemical and biological control systems for arthropods: evaluation in a multitrophic context. Pesticide Science 44, 207-218.
Zheng, X. L., Cong, X. P., Wang, X. P. & Lei, C. L. (2011) A review of geographic distribution, overwintering and migration in Spodoptera exigua Hübner (Lepidoptera: Noctuidae). Journal of the Entomological Research Society 13, 39-48.
Zalom, F. G. & Jones, A. (1994) Insect fragments in processed tomatoes. Journal of Economic Entomology 87,181-186.