Cultivares de aveia branca submetidas à doses de nitrogênio e regulador de crescimento

Abstract

The culture of oat (Avena sativa L.) is considered in Brazil less important than traditional crops such as soybean, corn and wheat in the economic context. Because of the position on the agricultural market, this winter grass does not have appropriate technologies of production in different culture environments, struggling as tall plants, due to genotype or application of inputs, particularly nitrogen. The objective of this study was to evaluate the agronomic performance of six oat cultivars in response to the application of trinexapac-ethyl growth regulator with four different doses of nitrogen in coverage. The experiment was conducted in the Research Department at the Agricultural UTFPR - Campus Pato Branco, Paraná. The experimental design was randomized blocks with three replications and the characteristics of grain yield and the plant height were evaluated. The response of cultivars to nitrogen application and the use of growth regulators for the characters grain yield and plant height is dependent on the genotype and interaction between genotype and environment. As result for the grain yield the cultivars URS Charrua and URS 21 showed significant differences for the application of growth regulators. The height of plants was significantly influenced by the application of the growth regulator only on the cultivar URS Charrua. Also a difference of potential of grain yield and plant height between the cultivars was observed.