Efficacy of Metarhizium Anisoplae (Metschnikoff, Sorokin) on the senegalese grasshopper oedaleus senegalensis (Krauss, 1877) in its Natural Environment
Journal: Journal of Agriculture and Crops (Vol.4, No. 1)Publication Date: 2018-01-15
Authors : Mamour Toure; Fawrou Seye; Amadou Fall; Raymond D. Ndione; Thierno Seydou Badiane; Mady Ndiaye;
Page : 1-7
Keywords : : Senegalese grasshopper; Groundnut basin; Density; Metarhizium anisopliae; Efficiency;
- Efficacy of Metarhizium Anisoplae (Metschnikoff, Sorokin) on the senegalese grasshopper oedaleus senegalensis (Krauss, 1877) in its Natural Environment
- THE EFFECT OF DIFFERENT CONCENTRATIONS OF METARHIZIUM ANISOPLIAE (METCHNIK OFF) SOROKIN IN THE FOURTH LARVAE INSTAR OF TROGODERMAGRANARIUM EVERTS(COLEOPTERA: DERMESTIDAE)
- Natural Plant Essential Oils for Controlling the Grasshopper (Heteracris littoralis) and their Pathological Effects on the Alimentary Canal
- Efficacy of Nano Isaria fumosorosea and Metarhizium flavoviride against Corn Pests under Laboratory and Field Conditions in Egypt
- Lethal Effects of the Mix (Suneem 1% and Metarhizium anisopliae) on Two Instars Larvae of Culex quinquefasciatus (Diptera, Culicidae) (Say, 1823) in their Natural Sites
Abstract
The Senegalese grasshopper Oedaleus senegalensis (Krauss, 1877) is a serious agricultural pest in Senegal. The use of chemical pesticides on a large scale has raised concerns because of side effects on health and the environment. As an alternative to chemical control, a fungal strain of Metarhizium anisopliae (Metschnikoff, Sorokin) was isolated from the Senegalese grasshopper, and grown in agar culture medium. The effect on O. senegalensis was studied with an oil fungus formulation of 340 × 105 conidia/ml. Spraying took place in the field, and both nymphs and adults were infected with the fungus oil formulation. A total of 1.5 liter oil formulation of fungus was used for 1500 m2. Two methods were used to assess effectiveness: 1) we captured infected insects and fed them fresh grass daily in the laboratory and recorded time to death; 2) we counted insects in the field before and after application. In the field, the number of insects decreased significantly after the fungus treatment. In the laboratory, the lethal time at which 50% of the insects died varied between 8 to 9 days. The effectiveness of M. anisopliae in natural environment decreased with time.
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Last modified: 2018-11-05 15:27:42