Resumo

KOLCHINSKI, Eliane Maria  e  SCHUCH, Luis Osmar Braga. Relationships between nitrogen fertility and grain and seeds quality in oats. Cienc. Rural [online]. 2004, vol.34, n.2, pp. 379-383. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782004000200007.

With the objective of evaluating the effect of nitrogen (N) fertilization on grain and seeds quality parameters in oat, a field experiment was conducted with the cultivars CTC5, UFRGS 15, UFRGS 19 and UPF 18, and levels of N fertilization, 0, 24, 48 and 73kg ha^-1 in a Typic Hapludalf soil, with 26.7g dm^-3 of organic matter. The grain quality was evaluated trough the test weight, protein concentration and groat percentage; the seed quality was estimated by the germination test and accelerated aging test. Independently of the considered cultivar the increase on level of N, decrease the test weight results, increase the protein concentration in the caryopsis and the protein yield, and does not affect the caryopsis percentage and physiological quality seeds.

Palavras-chave : Avena sativa L.; nitrogen.