RESUMENCon el objeto de controlar el ataque de Thrips tabaci Lind sobre el cultivo de ajo (Allium sativum L.) se ha evaluado el efecto de tres productos biodegradables diluidos en agua: i) 0,25% de aceite emulsionable; ii) 0,50% de aceite emulsionable; iii) 0,25% de detergente líquido comercial y iv) testigo, aplicados sobre plantas sembradas en campo. La respuesta a los tratamientos se midió contabilizando el número de larvas y adultos de T. tabaci en dos etapas fisiológicas (crecimiento vegetativo y bulbificación) y se registraron las condiciones de amplitud térmica para relacionar los efectos ambientales sobre el crecimiento de las poblaciones de T. tabaci. El diseño estadístico correspondió a un diseño completamente aleatorizado x 3 y su análisis (ANOVA y prueba de Student-Neuman-Keul's) revela que hubo efecto significativo de los tratamientos, habiendo eliminando el 44,3% de larvas y 42% de adultos trips. Se recomienda utilizar, para las condiciones locales, solución de detergente al 0,25% en volumen como parte de una estrategia preventiva para control de T. tabaci sobre el cultivo de ajo.Palabras clave: Productos biodegradables, Thrips tabaci, Allium sativum. ABSTRACT In order to control the Thrips tabaci Lind attack on garlic cultivation (Allium sativum L.) we assayed the effect of three biodegradable products: i) oil (0.25%); ii) oil (0.50%); iii) detergent (0.25%) and iv) control, all of them diluted in water and
En Posta de Hornillos (65º 27' 98'' W, 23º 39' 33'' S-2.370 msnm), Jujuy, Argentina, se detectó a Chelymorpha varians provocando una severa defoliación a Convolvulus arvensis L., maleza ampliamente distribuida en este país. El objetivo de este trabajo fue conocer aspectos bioecológicos de C. varians (duración del ciclo de vida, mortalidad, comportamiento reproductivo, enemigos naturales) a fin de evaluar su accionar como biocontrolador de esta maleza .
A�������. Hemiptera diversity associated with trees from urban environments in the province of Jujuy, Argentina. The Hemiptera of urban environments in Jujuy are li�le known and quite unexplored. The objective of this work was to analyze and characterize the Hemiptera diversity in trees of public roads in Jujuy, and to provide data about their bioecology. The study was conducted in three locations during a dry and a wet season; two environments were considered for each location: urban and suburban. In each site, three trees of Handroantus impetiginosus, Enterolobium contortisiliquum and Citrus aurantium were sampled. The foliage was aspirated and 10 branches/tree were randomly extracted. We identified the hemipterans and compared the abundance, richness, diversity, composition and dominance of each suborder according to the tree species, localities, seasonality and degree of urbanization. We collected 4339 individuals belonging to the suborders Auchenorrhyncha (8 families, 30 morphospecies, 1044 individuals), Heteroptera (8 families, 20 morphospecies, 196 individuals) and Sternorrhyncha (9 families, 33 morphospecies, 3099 individuals). For the first time in Jujuy, Rhabdotalebra albinoi and Rhabdotalebra flava were recorded on E. contortisiliquum, and Rhabdotalebra flava and the genus Tingis on H. impetiginosus. San Salvador de Jujuy was the location with the highest richness (56 morphospecies, 28 exclusive), in contrast to El Carmen (39 morphospecies, 13 exclusive) and San Pedro (34 morphospecies, 11 exclusive). We recorded Heteroptera phytophages, predators and species with mixed diet. Considering locality and tree species, Sternorrhyncha was the suborder with highest richness and abundance, whereas seasonality did not affect it. The other two suborders were not affected by seasonality. Hemiptera species shared by the three tree species were Dikrella sp.,
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