New Strategies in Locust Control

About this book

In the late eighties large-scale control operations were carried out to control a major desert locust upsurge in Africa. For the first time since the banning of organochlorine pesticides these operations relied mainly on non-persistent pesticides such as organophosphates and pyrethroids. The amount of pesticides sprayed and the area covered were probably the highest in the history of locust control and raised criticism with respect to efficacy, economic viability and environmental impact. As a consequence, applied research into the problem was intensified, both at the national and the international level, with the goal of finding new and environmentally sound approaches and solutions to locust and grasshopper control. Emphasis was laid on developing new control agents and techniques.

Contents

Part 1 Biology of desert locust and research priorities: evaluating recent locust research, P. Symmons; ecology of "Schistocerca gregaria" (Forskal) - observations in West Africa from 1990 to 1994, H. Wilps. Part 2 Forecasting and modelling: desert locust forecasters' GIS - a researchers' view, J.I. Magor and J. Pender; SWARMS - a geographic information system for desert locust forecasting, K. Cressman; mapping of desert locust habitats using remote sensing techniques, F. Voss and U.Dreiser; vertical-looking radar as a means to improve forecasting and control of desert locusts, J.R. Riley and D.R. Reynolds; forecasting the early-season eclosion of "Oedaleus senegalensis" in the Sahel - the role of remotely sensed rainfall data, P.J.A. Burt et al; biotic and abiotic factors affecting the population dynamics of the Senegalese grasshopper, "Oedaleus senegalensis", J. Colvin; modelling brown locust outbreaks in relation to rainfall and temperature, S.A. Hanrahan and D. Horne; metapopulations of locusts and grasshopppers - spatial structures, their dynamics and early warning systems, M.G. Sergeev; forecasting seasonal dynamics of the Asiatic migratory locust using the "locusta migratoria migratoria - Phragmites australis" forecasting system, A.G. Antonov and V.E. Kambulin. Part 3 Forecasting and modelling - poster contributions: the SGR biomodel - a synoptic model for surveillance and early warning specific to the desert locust over the whole of its distribution habitat, M. Launois; anti-locust early warning systems - recent experiences from eastern Africa, P.O. Odiyo. Part 5 Forecasting and modelling - working group: results and recommendations of the working group Forecasting and modelling, K. Cressman. Part 6 Control agents and methods: overview and challenges of new control agents, W.F. Meinzingen; field investigations on "Schistocerca gregaria" (Forskal) adults, hoppers and hopper bands, H. Wilps and B. Diop; persistence of benzophenylureas in the control of the migratory locust "Locusta migratoria capito" (Sauss.) in Madagascar, R. Scherer and H. Celestin; evaluation of insect growth regulators for the control of the African migratory locust, "Locusta migratoria migratorioides" (R. & F.) in Central Africa, A.C.Z. Musuna and F.N. Mugisha; field application of the juvenile hormone analogue fenoxycarb against hopper bands of "Locusta migratoria capito" in Madagascar, A. Dorn et al; locust control with "Metarhizium flavoviride" - new approaches in the development of a biopreparation based on blastospores, D. Stephan et al; "Metarhizium flavoviride" - recent results in the control of locusts and grasshoppers, C.J. Lomer et al; small-scale field trials with entomopathogenic fungi against "Locusta migratoria capito" in Madagascar and "Oedaleus senegalensis" in Cape Verde, F.X. Delgado et al; development of a mycoinsecticide for the Austrian plague locust, R.J. Milner et al; (Part contents)

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