Fenthion and chlorphyriphos against mound termite Cornitermes cumulans (Kollar, 1832) (Isoptera: Termitidae)

Abstract

In order to evaluate the performance of two insecticides (fenthion and chlorpyriphos) in the control of mound termite nests (Cornitermes cumulans), a test was carried out in Piracicaba, State of São Paulo, Brazil. Sixty nests were selected, measured and divided into six groups of 10 mounds each. The treatments were as follows: A) chlorpyriphos, 1.2g; B) chlorpyriphos, 2.4g; C) chlorpyriphos, 3.6; D) chlorpyriphos, 4.8g; E) fenthion, l.0g; F) fenthion, 1.25g. (quantities are of active ingredients introduced in each mound). With a 60cm long steel bar a vertical canal was made from the top of the nest to the center of the colony. The emulsions (insecticides plus water) were introduced into each termite nest. After 126 days following application, the nests were completely destroyed. All dosages of the two insecticides provided 100% of dead mounds.