%0 Journal Article
%T Protocolo de recuento reducido para cinco tama£¿os diferentes de trampas adhesivas amarillas utilizadas en el monitoreo de Frankliniella occidentalis (Pergande)
%A Carrizo
%A Paola
%A Ben¨ªtez
%A Daniel
%A Bertoia Estanga
%A Emiliano
%J Agronom¨ªa Tropical
%D 2004
%I Scientific Electronic Library Online
%X one of the reasons for the reduced use of sticky traps by growers is that counting takes a considerable amount of effort and time, which increases with as trap size. we examined the influence of higher trap sizes, in order to apply a method of reduced counting, named least surface counting. sticky yellow traps of five different sizes were placed in pepper greenhouses (n=10). counting was performed on the whole trap and six different designs of reduced counting. a paired t-test was performed on differences between trap faces. since meaningful differences were obtained in 96% of tests, each face was considered as independent, doubling the number of data sets. then, a paired t-test was performed to test the difference between counts/cm2 in the whole trap and on those six designs. number of captures/cm2 at every design was equal or meaningfully higher than in the whole trap. it demonstrated a clustering of insects on its surface, which seemed to increase with size. the most stable performance along the five sizes tested was obtained by counting two horizontal strips -tops and bottoms- which means counting around 40% of total surface. thus, that previously fitted method is adequate to predict western flower thrips caught when performed on yellow sticky traps from 100 to 750cm2.
%K yellow sticky traps
%K counting time
%K frankliniella occidentalis.
%U http://www.scielo.org.ve/scielo.php?script=sci_abstract&pid=S0002-192X2004000100001&lng=en&nrm=iso&tlng=en