Baseline data, diagnostic doses, and monitoring of resistance to imidacloprid, spinosad and carbosulfan in adult populations of Thrips palmi (Thysanoptera: Thripidae) in the Cauca Valley, Colombia
Main Article Content
The melon thrips (Thrips palmi) have become a very significant pest of snap beans, beans, eggplants and cucumbers, and other crops, since they were first reported in Colombia. The response of farmers to this problem has been excessive pesticide use. With the aim of monitoring changes on the susceptibility of thrips populations to certain insecticides that are still effective, the line base data, LC50 and LC90 values and diagnostic doses for imidacloprid, spinosad and carbosulfan were established. We used an adult population of a susceptible strain of T. palmi maintained at CIAT since 1997. lmidacloprid was evaluated as a systemic pesticide by immersing leaves with petioles in insecticide solutions. Disks of foliage treated in this fashion were placed on agar in petri dishes. Spinosad and carbosulfan were evaluated as contact pesticides using the foliage dipping technique. Disks of the treated foliage were placed on petri dishes with agar. The diagnostic doses were 1.000 ppm (imidacloprid), 2.000 ppm (spinosad) and 2.000 ppm (carbosulfan). These doses were used for field monitoring of resistance in five zones of the Cauca Valley where heavy use of pesticides for the control of T. palmi occurs. No evidence of resistance to any of the evaluated pesticides was found. Nevertheless, we recommended the performance of periodic monitoring in order to detect changes in resistance of the thrips over time.
- CARMEN ELISA POSSOL, CÉSAR CARDONA, JOSÉ F. VALOR, HÉCTOR MORALES, DEVELOPMENT OF BEAN RESISTANT LINES TO Zabrotes subfasciatus (Boheman)) (COLEOPTERA: BRUCHIDAE) , Revista Colombiana de Entomología: Vol. 18 No. 1 (1992)
- JUAN MIGUEL BUENO, CÉSAR CARDONA-M., Action threshold for Thrips palmi (Thysanoptera: Thripidae) on snap beans in the Cauca Valley, Colombia , Revista Colombiana de Entomología: Vol. 29 No. 1 (2003)
- GUILLERMO SOTELO, CÉSAR CARDONA-M., JOHN MILES, Development of Brachiaria hybrids resistant to four species of spittlebug (Homoptera: Cercopidae) , Revista Colombiana de Entomología: Vol. 29 No. 2 (2003)
- JOHN DÍAZ-M., CÉSAR CARDONA-M., JUAN MIGUEL BUENO, Characterization of dry bean genotypes (Phaseolus vulgaris) for resistance to Thrips palmi (Thysanoptera: Thripidae) , Revista Colombiana de Entomología: Vol. 29 No. 1 (2003)
- JORGE E. GARCÍA, CÉSAR CARDONA-M., AART VAN SCHOONHOVEN, RESISTANCE OF COMMON BEANS, Phaseolus vulgaris L., AL Empoasca kraemeri ROSS AND MOORE , Revista Colombiana de Entomología: Vol. 7 No. 3-4 (1981)
- NANCY AIDA BUITRAGO, CÉSAR CARDONA-M., ALFREDO ACOSTA-G., Levels of resistance to insecticides in Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae), a pest of beans , Revista Colombiana de Entomología: Vol. 20 No. 2 (1994)
- ISAURA RODRÍGUEZ, HÉCTOR MORALES, JUAN MIGUEL BUENO, CÉSAR CARDONA M., The B biotype of Bemisia tabaci (Homoptera: Aleyrodidae) becomes more important in the Cauca Valley , Revista Colombiana de Entomología: Vol. 31 No. 1 (2005)
- ISAURA RODRÍGUEZ, HÉCTOR MORALES, CÉSAR CARDONA-M., Base line data, diagnostic doses, and field monitoring of resistance to several insecticides in adult and immature populations of Trialeurodes vaporariorum (Homoptera: Aleyrodidae) in the Cauca Valley, Colombia , Revista Colombiana de Entomología: Vol. 29 No. 1 (2003)
- JULIANA OSORIO-C., CÉSAR CARDONA-M., Phenology, population dynamics and sampling methods for Thrips palmi (Thysanoptera: Thripidae) on snap beans and beans , Revista Colombiana de Entomología: Vol. 29 No. 1 (2003)
- CARMEN E. POSSO, CÉSAR CARDONA, JOSÉ F. VALOR, HÉCTOR MORALES, CHARACTERIZATION OF A NEW PROTEIN AS A RESPONSIBLE FACTOR FOR THE RESISTANCE OF Phaseolus vulgaris TO Zabrotes subfasciatus (Boheman) (Coleoptera: Bruchidae) , Revista Colombiana de Entomología: Vol. 15 No. 2 (1989)
Authors retain the copyright on their work and are responsible for the ideas expressed in them. Once a manuscript is approved for publication, authors are asked for a publication license for the term of legal protection, for all territories that allows the use, dissemination and disclosure of the same.