January 2012

The use of two indigenous medicinal plant leaf powders (Cymbopogon citratus and Ocimum suave) applied as mixed and individual powders to evaluate the reproductive fitness of F1 generation (eggs laid and F2 adult) of Callosobruchus maculatus (cowpea bruchid)

It has been estimated that over 90% cowpea is lost to cowpea bruchids especiallyCallosobruchus maculatus. A mixture of plant containing Cymbopogon citratus (Lemon grass) (L) and Ocimum suave (Wild basil) (W) powders in the ratios (Lemon grass: Wild basil): 100:0, 80:20, 60:40, 50:50, 40:60, 20:80, 0:100 and 0:0 were used under ambient laboratory conditions with the aim of evaluating the effects...

Author(s): Ojianwuna, C. C. and Umoru, P. A.

January 2012

Evaluation on the efficacy of spinosad dust against major storage insect pests

Laboratory bioassay trials were conducted at the National Agricultural Research Laboratories and Kiboko sub-centre in Kenya to determine the efficacy of spinosad dust 0.125% admixed with shelled grains, compared to a “cocktail” of pirimiphos-methyl 1.6% and permethrin 0.3% (Actellic super dust) against four important storage-insect pests: Sitophilus zeamais (Motsch), Tribolium...

Author(s): Kimondo Mutambuki, C. M. Ngatia, J. N. Mbugua and P. Likhayo