Two experiments were carried out to evaluate the efficiency of chemical and nonchemical
insecticides on the mango soft scale insect, kilifia acuminata (Signoret) infesting
mango trees in Ismailia Governorate. The first experiment was carried out at the first of
January, 2007 in El-Kantra Gharb district and the second experiment was carried out at the
first of January, 2008 in El-Kantra Gharb district, Ismailia Governorate, respectively. The
obtained results of the first experiment indicated that Admiral gave the highest reduction
percentage (91.44%), followed by Biroanza (85.53%), Biover (84.30%) and Malathion
which gave (78.82%) percentage of reduction. The least effective compound was Conserve
which showed (69.47%) percentage of reduction. The obtained results of the second
experiment showed that Admiral the most superior compound which gave (86.14%)
percentage of reduction. The rest of compounds could be descendgly arranged as follows:
Gogopa oil (81.97%), Super Royal oil (81.97%), Biover (79, 29%), Royal oil (74.35%), and
Diver and oil (72.17%) percentage of reduction. The least effective insecticide was Masrona
oil which gave (72.03%) percentage of reduction of the different stages of the mango soft
scale insect.