Effect of Nitrogen Rates and Method of Nitrogen Application on Dry Matter Yield and some Characters of Sorghum-Sudangrass Hybrid

• Published in: Acta agriculturae Scandinavica. Section B, Soil and plant science Vol. 52; no. 2; pp. 96 - 100
• Main Authors: Iptas, Selahattin, Brohi, A. Rashid
• Format: Journal Article
• Language: English
• Published: Taylor & Francis Group 01.01.2002
• Subjects: Crude Protein Content; Crude Protein Yield; Dry Matter Yield; Hybrid; Methods Of Nitrogen Application; Nitrogen Rates; Sorghum-SUDANGRASS; Tillering
• ISSN: 0906-4710; 1651-1913
• DOI: 10.1080/090647102321089837

In this study, the effect of nitrogen (N) rates (0, 40, 80, 120, 160 and 200 kg N ha -1 ) and methods of N application (A 1 : all N at sowing; A 2 : no N at sowing, half N after the first cutting and the remaining half after the second cutting; A 3 : one-third N at sowing, one-third after the first cutting, and the last third after the second cutting) on dry matter (DM) yield and some characters of the sorghum-sudangrass hybrid was investigated. DM yield increased significantly from 27.0 g pot -1 (0 kg N ha -1 ) to 38.6 g pot -1 (120 kg N ha -1 ). Higher N rates continued to increase the number of tillers per plant -1 (except for 40 and 80 kg N ha -1 ). N rates have significant effect on crude protein (CP) content, and CP content varied from 6.71 to 7.08%. N up to 120 kg N ha -1 rate increased CP yield, but no difference was observed among 80, 120, 160 and 200 kg N ha -1 . There was no significant effect of the method of N application in terms of DM yield, tillering and CP yield. However, the method of N application had a significant effect on CP content, which was 7.09% by A 1 , 6.97% by A 2 and 6.57% by A 3 .