Determination of the Utilization of Nitrogen From Tobacco Waste By Wheat Crop With 15 N Tracer Technique

Authors : A Reşit BROHİ, M Rüştü KARAMAN

Pages : 593-600

View : 17 | Download : 8

Publication Date : 1998-12-01

Article Type : Research Paper

Abstract :The field experiment was laid out with randomized block design with split plot and three replications during the 1991- 92 years. Each plot was 16 m 2 . Tobacco-waste at the rates of 0, 10, 20, 30 and 40 tons/ha were applied to the plots and Bezostiya wheat variety was sown in 23 rd October, 1991. Nitrogen as insert ignore into journalissuearticles values(NH 4 ); 2 SO 4 at the rates of 0, 20, 40, 60 and 80 kg N/ha was applied to the plots in 31 st March, 1992. The rates of 20 and 80 kg N/ha were only labelled wth 15 N at 10% atom excess because of their high cost under field conditions. Wheat crop was harvested in 13 th July, 1992. Straw and grain yield were recorded. The straw and grain were analysed for total N and 15 N by emission spectrophotometry. According to the results of this research, increasing tobacco-waste and nitrogenous fertilizers have important effect on the yield, N content and N uptake of wheat crop. The % Ndff insert ignore into journalissuearticles values(nitrogenous fertilizer); increased from 6.14 to 19.03 at 20 and 80 kg N/ha respectively for wheat straw. The % Ndf insert ignore into journalissuearticles values(Tobacco-waste); was 12.49, 26.45, 34.01 and 33.86 insert ignore into journalissuearticles values(as the mean of 20 and 80 kg N/ha rates); at 10, 20, 30 and 40 tons/ha T.W rates, respectively. The percent N utilization of nitrogen fertilizer insert ignore into journalissuearticles values(N.F.); decreased from 13.50 to 10.90 at 20 and 80 kg N/ha rates, respectively. The percent utilization of T.W was 1.86, 3.24, 2.55 and 2.74 insert ignore into journalissuearticles values(as the mean of 20 and 80 kg N/ha rates); at 10, 20, 30 and 40 tons/ha rates respectively. In wheat grain, the percent N utilization of nitrogen fertilizer insert ignore into journalissuearticles values(N.F.); decreased from 40.60 to 38.40 at 20 and 80 kg N/ha, respectively. The percent utilization of T.W decreased from 16.53 insert ignore into journalissuearticles values(control); to 8.97 insert ignore into journalissuearticles values(40 ton/ha);.
Keywords : Turk J Agric For, 22, 1998, 593 600 Turk J Agric For, vol 22, iss 6