The effect of nitrogen doses on nitrogen uptake and translocation in spring barley genotypes

Abstract

In this research we investigated the effects of N doses on the yield, N uptake and N translocation in genotypes of spring barley. The research was done in Erzurum, in 1996 and 1997. Three barley genotypes (Tokak 157/37, Cytris, and 1515) were used with five doses of N (0, 20, 40, 60 and 80 kg ha−1). Significant differences were observed between genotypes, in the grain N concentration, grain protein concentration, grain N yield, total N uptake and N translocation efficiency. The highest grain yield (2706 kg ha−1), grain N % (1.98), grain N yield (54 kg ha−1), total N uptake (80.9 kg ha−1) and N translocation efficiency (66.9 %) were obtained from Tokak 157/37. N doses had a significant influence on the characters investigated. Grain yield, straw yield, concentrations of grain N, straw N, and grain protein, grain N yield, straw N yield and total N uptake all increased with increasing doses of N whereas N translocation efficiency decreased.