Control quìmico de Thrips palmi Karny (Thysanoptera, Thripidae) en caraota (Phaseolus vulgaris L.) II.

Spanish; Castilian. Un nuevo ensayo efectuado en el verano de 1993 en Santa Cruz de Aragua, estado Aragua para el control de Thrips palmi Karny en caraota se utilizaron los siguientes productos químicos: avermectina (Vertimec 1.8 CE) 1 L/ha, cartap (Padan 50% PS) 2 kg/ha, diflubenzuron + aceite parafinico (Dimilin 25% PM + SafTSide 80%) 1 kg+7 L/ha, flufenoxuron (Cascade 100 CE) 1 L/ha, fenobcarb (Osbac 50% CE) 1,5 L/ha, imidacloprid (Confidor 350 CS) 0,75 L/ha, isazofos (Miral 500 CS) 2 L/ha, piriproxifen (Admiral 10% CE) 1 L/ha y propetanfos (Blotic 35% CE) 1 L/ha. Se efectuaron cuatro tratamientos y cinco evaluaciones, una previa y siete días después de cada aplicación. En el control de ninfas los productos con mayor eficacia fueron imidacloprid con 85,97%, avermectina 74,74%, piriproxifen con 69,57%, cartap con 57,16%, flufenoxuron con 51,36%, diflubenzuron+aceite 24,70%, fenobcarb, isazofos y propetanfos presentaron poblaciones mayores al testigo. Resultados semejantes se observaron con el control de adultos pero con menor eficacia, avermectina con 50,21%, piriproxifen con 45,05%, flufenoxuron 24,45%, cartap con 22,73% e imidacloprid con 8,59%, diflubenzuron+aceite 2,61%, fenobcarb, isazofos y propetanfos presentaron poblaciones mayores al testigo.

English. A new field trial for the control of Thrips palmi Karny on field beans was held at Santa Cruz, State of Aragua in March 1993. Products, formulations and dosages used were: avermectina (Vertimec 1.8 EC) 1 L/ha, cartap (Padan 50% SP) 2 kg/ha, diflubenzuron + paraffinic oil (Dimilin 25% WP + SafTSide 80%) 1 kg/ha + 7 L/ha, fenobcarb (Osbac 50% EC) 1.5 L/ha, flufenoxuron (Cascade 100 EC) 1 L/ha, imidacloprid (Confidor 350 SC) 0.75 L/ha, isazofos (Miral 500 SC) 2 L/ha, pyriproxyfen (Admiral 10% EC) 1 lL/ha and propetanphos (Blotic 35% EC) 1 L/ha. A total of four applications and five evaluatios were performed, one previous to treatment and again seven days after each application. In nymph control, the most effective treatments were imidacloprid, 85.97%. avermectin 74.74%, pyropoxifen 69.57 %, cartap 57.16%, flufenoxuron 51.36%, diflubenzuron + oil 24.70%.. Fenobcarb, isazofos and propetanphos gave higher population percentages than control in adults but with less efficiency. Similar results were observed in the control of adults but with a lower efficacy, avermectin 50.21%, pyriproxyfen 45.05%, flufenoxuron 24.45%, cartap 22.73% and imidacloprid 8.59%. Diflubenzuron + oil 2.612%. , Fenobcarb, isazofos and propetanphos gave higher populations than the control group.