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      Evaluación del insecticida thiamethoxam 25% para el manejo del insecto sogata en el cultivo de arroz en calabozo, estado Guárico, Venezuela Translated title: Evaluation of insecticide thiamethoxam 25% for the control of the sogata insect in the culture of rice in calabozo Guarico state, Venezuela

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          Abstract

          Se realizaron ensayos en campos de arroz con riego ubicados en parcelas del Sistema de Riego Río Guárico (S.R.R.G.) y en la Estación Experimental del Instituto Nacional de Investigaciones Agrícolas (INIA)-Guárico, estado Guárico, Venezuela entre los años 2003 a 2006. El objetivo de este trabajo fue evaluar el grado de eficacia de varias dosis del insecticida thiamethoxan y los productos comerciales ethophenprox 10,9% EC y monocrotophos 600 SL para el control del insecto, Tagosodes orizicolus Muir (1926) (Homoptera: Delphacidae). Se probó el producto thiamethoxan 25% WC a 3 dosis mostrando los resultados de la prueba de insecticidas para el control de T. orizicolus, para ello, fueron efectuados 6 tratamientos con 4 repeti­ciones; un diseño de bloques al azar y para determinar el grado de eficacia se utilizó la fórmula de Abbot corregida. Los mejores resultados fueron con thiamethoxan a las dosis de 100 i. a y 75 g ha-1, los cuales presentaron grados de eficacia por encima del 77%. Se señala la información de la prueba comercial del insecticida thiamethoxan 25% a la dosis de 100 g ha-1, para el control del insecto T. orizicolus en las parcelas 590 y potrero 15 (INIA) del S.R.R.G en Calabozo, municipio Francisco de Miranda, estado Guárico, Venezuela. Las evaluaciones se realizaron a las 24 horas, 7 y 14 días después de aplicado el producto, se consiguió un promedio de 82% de control del insecto en ambas parcelas. Se describe la metodología y forma de evaluar al insecto bajo condiciones de campo en el cultivo de arroz.

          Translated abstract

          Studies were carried out in rice fields located at the Río Guárico Irrigation System (R.G.I.S.) and within the Guárico Experimental Station in Calabozo, Venezuela since 2003 to 2006. The goal was to evaluate the degree of effectiveness of 3 doses of the insecticide thiame­thoxan and the commercial products ethophenprox 10.9% EC and monocrotophos 600 SL to control Tagosodes orizicolus Muir (1926) (Homoptera: Delphacidae). In total there were 6 treatments in a factorial experiment completely random design with four replications to determine the degree of effectiveness using a formulation from Abbot's corrected. We found that the thiamethoxan 25% (100 i.a and 75 g ha-1), had an effectiveness over 77%, and was the best of the evaluated treatments. We also shown the information of the commercial test of the insecticide (thiamethoxan 25%) with the commercial dose of 100 g ha-1, for con­trol of the sogata insect, in the farm 590 and 15 (INIA) of R.G.I.S in Calabozo Miranda County. The evaluations were made at the 24 hours, and 7 and 14 days after applied the product, and we found an average of 82% of control of sogata planthopper in both farms. We also described the methodology and forms to evaluate the sogata insect under field conditions in rice agrosystems.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                at
                Agronomía Tropical
                Agronomía Trop.
                Instituto Nacional de Investigaciones Agrícolas INIA de Venezuela (Maracay )
                0002-192X
                March 2009
                : 59
                : 1
                : 89-98
                Affiliations
                [1 ] INIA Venezuela
                [2 ] INIA Venezuela
                Article
                S0002-192X2009000100009
                761b55dc-bd02-4bd8-9145-2b6086716511

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Venezuela

                Self URI (journal page): http://www.scielo.org.ve/scielo.php?script=sci_serial&pid=0002-192X&lng=en
                Categories
                AGRONOMY

                Horticulture
                Oryza sativa,rice,chemical control,management of insects,sogata planthopper,Tagosodes orizicolus Muir,arroz,control químico,manejo de plagas,insecto sogata

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