Destino do nitrogênio em videiras 'chardonnay' e 'riesling renano' quando aplicado no inchamento das gemas

摘要: The grapevines N fertilization levels in Southern Brazil use to be accounted as function of leaf and petioles rates for a limit yield expectation, without any information about the inner dynamics grapevines. This experiment was carried out 2002/03, estimate destiny broadcasted on vineyard soil with Chardonnay Riesling Renano grapevines, at Udorthent in, Bento Goncalves, Brazil. vines received application 15.91g plant-1, 40 kg ha-1, 4% atoms 15N, bud break. buds leaves were collected central parts year branch eight different times grapes seven grapes. last collection separated leaves, fruits, branches, branches two years stem, then oven-dried, weighted analyzed total 15N contents. results showed that larger percentage since beginning break until harvest is derived forms from those applied highest quantity accumulated annual perennial part N, being very small amounts stored parts.