Resumen

COLLAVINO, Marcelo Dante  y  GIMENEZ, Rosana Alejandra. EFFICACY OF IMIDACLOPRID TO CONTROL THE TOMATO BORER (TUTA ABSOLUTA MEYRICK). Idesia [online]. 2008, vol.26, n.1, pp. 65-72. ISSN 0718-3429.  doi: 10.4067/S0718-34292008000100009.

The incidence of Tuta absoluta in tomato production, the use of pesticides for its control, the risk of contamination to the environment and the creation of a generation of resistance, makes it very important to find alternative ways to efficiently control the tomato borer. This test was developed under greenhouse conditions to assess the effectiveness of the imidacloprid to the control of this pest at different rates and application forms. Two dilutions of the insecticide were prepared and applied in two different ways: by watering and by the immersion of the root of the plants into the soil bed. To evaluate the damage, calculations were carried out on the percentage of the leaves damaged on each plant and on the number of lesions on each leaf at different moments of the application. The design was factorial, completely randomized and with 9 replications, and an ANOVA was carried out. Significant differences were confirmed among the dilutions and also among the two application forms (watering and immersion). The better treatments were: dilution of 3,5% applied by watering and dilution of 7% applied by immersion.

Palabras clave : Tuta absoluta; imidacloprid; watering; immersion.