Monitoreo de Tagosodes Orizicolus M. e incidencia del virus de la hoja blanca "VHB" en el cultivo de arroz en calabozo, estado guárico, Venezuela

the incidence of white leaf virus (wlv) and insect population density of sogata, tagosodes orizicolus (muir) 1926, was studied in 10 commercial plots of rice located in the rio guárico irrigation system (rg.i.s). the area under the study was divided into three (3) sections during the dry season from 2003 to 2007. the incidence of wlv also was registered in three commercial plots of rice, both in the dry and rainy season. the objective of this study was the evaluation of wlv effect on rice plants as well as the effect of sogata population density as a vector of the disease in commercial plantings (r.g.i.s). the percentage of plants affected by the virus was very low, ranging between 0.56% and 1.08%, and the insect population density of sogata averaged 3.90 individuals per insect net (double pass)