Insecticidal Potentials Of Some Selected Plants

ABSTRACT

The phytopesticidal effects of Piper guineense, capsicum annum, Zingiber officinale and Lippia adoensis were tested for the mortality rates of the following insects: Rhaffella germanium. Aedes Diphtheria spp and the brown plant hoppers. Percentage mortality rates of 89.5±2.2 for Rhaffella germaium, 55.3± 4.6 for Aedes .spp, 92.4+ 1.8 for Diphtheria  .spp and 61 .7+ 3.4 for the brown plant hopper was recorded by Piper gunieense as compared to capsicum anman which had mortality rates in percentage as 90. 1 ± 4.0 for Rhffella germanium, 29.1 5.4 for Aedes .spp; 69.9 3.2 for Diphheria.spp; and 50.5± 3.3 for the brown plant hopper. Lippia adoensis also had mortality rates in percentage of 56.3± 3.0 for Rhaffella germamium, 87.7± 2.7 foe Aedes .spp, 69.3 5.9 for Diphtheria .Spp and 61. 1 ±2.2 for the brown plant hopper as compared to Zingiber officinale which showed percentage mortality rates of 31.1+ 3.3 for Rhaffella germanium, 91.3+ 2.8 for Aedes spp; 91.1± 2.5 for Diphtheria .spp and 34.4 ±3.8 for the brown plant hopper.