Interactions between weedy rice and cultivated rice in Italy

Field studies were carried out in 1997 and 1998 in northwest Italy with the aim of determining the effects of weedy rice competition on rice growth dynamics and yield. ‘Arborio’ (medium-high tall size, high early vigour) and ‘Thaibonnet’ (semi-dwarf size, low early vigour) rice cultivars were grown in competition with weedy rice at four densities (0, 10, 20, and 40 plants m-2). For both cultivars the plant height, the aboveground biomass and the number of tillers were determined at different intervals. With some exceptions, all the measured rice growth parameters were not remarkably affected by weedy rice interference. Weedy rice plants grown in competition with ‘Arborio’ were generally taller and produced more biomass. Weedy rice competition resulted in up to 50% (in ‘Thaibonnet’) and 48% (in ‘Arborio’) yield losses. The yield losses observed in both varieties were primarily related to the reduction of yield components, and of panicle density and number of filled grains per panicle, in particular

El programa de doctorado de UADER y el impacto esperado en la revista Scientia Interfluvius

Se comenta el impacto positivo que tendrá la reciente carrera de Doctorado en Educación de la Universidad Autónoma de Entre Ríos en la cantidad de artículos de la revista científica de la Universidad, Scientia Interfluvius. Este impacto se fundamenta en que la presentación de la tesis requiere la previa publicación de artículos en dicha revista.The recent PhD in Education at the Universidad Autónoma de Entre Ríos is discussed along with the positive effect it will have on the number of articles in the scientific journal of the University, Scientia Interfluvius. This impact is based on the fact that the presentation of the thesis requires prior publication of articles in that journal.Fil: Calzolari, Aldo. Universidad Autónoma de Entre Ríos; ArgentinaFil: Coll Moritan, Victoria. Universidad Autónoma de Entre Ríos; ArgentinaFil: Ferrero, Brenda Soledad. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentin