Efficacy of Powders Produced from Eugenia aromatica (L.) Baill. and Piper guineense Schumach. as Fumigants Against Eggs of Five Different Grain Storage Moth Pests

• T.I. Ofuya

  Department of Crop, Soil and Pest Management, The Federal University of Technology, PMB 704, Akure, Nigeria.

  Author

• C.S. Adler

  Julius Kuehn Institute, Institute of Ecological Chemistry, Plant Analysis and Stored Product Protection, Koenigin-LuiseStrasse 19, 14195 Berlin, Germany

  Author

The study investigated the fumigant toxicity of powders made from dry flower buds of Eugenia aromatica (L.) Baill. and dry seeds of Piper guineense Schumach. to eggs of five different grain storage moths: Plodia interpunctella (Hubner), Ephestia kuehniella Zeller, E. elutella (Hubner), E. cautella (Walker) and Corcyra cephalonica (Stainton) at 25 ± 2 C and 65 ± 3% relative humidity. The powders were tested at the dosages of 0.0, 0.1, 0.2, 0.3, 0.4, and 0.5 g/20 g of grain infested with eggs in glass bottles. Each dosage of powder was placed in a wire mesh cage that allowed escape of pungent fumes but no contact with the eggs and grain. Egg eclosion and possible progress in larval development were observed 7 and 20 days post treatment. With few exceptions, irrespective of powder dosage and moth species, egg eclosion occurred. Egg hatchability rating decreased with increase in dosage of powder, especially with E. aromatica. Irrespective of powder dosage and moth species, larval development generally progressed in the treatments. Larval development rating decreased with increase in dosage of powder, especially with E. aromatica. It can be concluded that E. aromatica powder exhibited fumigant action against eggs of these storage moths that can be exploited in the mitigation of damage to grain and grain products by these insects.

1. T.I. Ofuya, Department of Crop, Soil and Pest Management, The Federal University of Technology, PMB 704, Akure, Nigeria.

   Department of Crop, Soil and Pest Management, The Federal University of Technology, PMB 704, Akure, Nigeria.

2. C.S. Adler, Julius Kuehn Institute, Institute of Ecological Chemistry, Plant Analysis and Stored Product Protection, Koenigin-LuiseStrasse 19, 14195 Berlin, Germany

   Julius Kuehn Institute, Institute of Ecological Chemistry, Plant Analysis and Stored Product Protection, Koenigin-LuiseStrasse 19, 14195 Berlin, Germany

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