Abstract

DIETZ, J.I; SCHIERENBECK, M; MARTINEZ, N  and  SIMON, M.R. APLICACIÓN DE FUNGICIDAS Y FERTILIZACIÓN NITROGENADA EN AVENA: EFECTOS SOBRE LA GENERACIÓN DE BIOMASA AÉREA Y RENDIMIENTO. FAVE. Secc. Cienc. agrar. [online]. 2016, vol.15, n.2. ISSN 1666-7719.

Fungicide applications and nitrogen fertilization in oat. The present study was designed to determine the effect of nitrogen fertilization (N) and fungicide applications on the severity caused by foliar diseases and its effects on the leaf area index, biomass production and yield in oat. Field experiments were carried out in at the Facultad de Ciencias Agrarias y Forestales (FCAyF), UNLP, using a split-split-split-plot design with three replications. The main plots were two environments: 2014-2015, the subplots were the treatments: with and without fungicide, the sub-plots were the treatments with 0 and 60 kg N.ha-1. The sub-subplots were three oats genotypes (L5 and L6 from FCAyF and Bonaerense INTA Calén). Fungicide applications caused a reduction on the severity of the diseases and N tended to increase % severity at growth stage (GS) 82, GS where leaf rust was preponderant. At this GS there was a better control produced by the fungicide without N applications. Both the fungicide and the N application increase leaf area index, biomass and grain yield. L5 and L6 genotypes showed lower severity values and higher biomass and yield production than INTA Calén

Keywords : triazols-strobilurins; nitrogen; biomass; yield; Avena sativa.