Efficiency of Liquid and Granular Formulations of
Insecticides for Mound-building Termites Cornitermes cumulans
(Kollar) (Isoptera: Termitidae)
Angela Canesin, Paulo E. Degrande, Bruno A. Crispim, Larissa
C. Tannous, Odival Faccenda
Abstract
The
importance of testing molecules, as a strategy to chemical
control, concerns the use of a selective product with high efficiency
against
the pests combined with the residual power; and this product should be
environmentally,
economically and operationally viable. The objective of this research
was to
study the chemical control of mound-building termites Cornitermes
cumulans
(Kollar) (Isoptera: Termitidae). The study was conducted in pasture, at
the
Estância Nelore located at km 236 of highway BR-163 in the
municipality of
Caarapó, Mato Grosso do Sul State, Brazil, during the period
from November 6th
to December 6th, 2007. Four active ingredients
(A.I.) were
evaluated: imidacloprid,
fipronil, deltamethrin and chlorpyriphos, at the dosages of 0.60 g, 0.20 g,
1.0 g and 1.2 g,
respectively, applied per termite monticule. A completely randomized
design with
five treatments and ten replications was adopted. The treatments were
represented by the control group and the four A.I.’s. Each
replication consisted
of one active termite mound about 50 cm in height. The chosen termite
mounds were
identified with lime based paint. To calculate the efficiency of A.I.s
tested, the
Abbott formula was used. Means were compared by multiple comparison
test U of Mann-Whitney
with significance level of 5%. The results demonstrated the high potential of chlorpyriphos in
controlling C. cumulans.
Key
words
- Chemical
control, Pest control, Pasture.
Resumo: Resumo
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