Effect of Nitrogen Rate and Stubble Height on Dry Matter Yield, Crude Protein Content and Crude Protein Yield of a Sorghum–Sudangrass Hybrid[Sorghum bicolor (L.) Moench × Sorghum sudanense (Piper) Stapf.] in the Three‐Cutting System
作者： S. Iptas , A. R. Brohi
DOI: 10.1046/J.1439-037X.2003.00001.X
关键词: Cutting 、 Yield (chemistry) 、 Poaceae 、 Sorghum 、 Plant breeding 、 Dry matter 、 Plant protein 、 Cropping system 、 Mathematics 、 Agronomy
摘要: In this study, the effects of nitrogen (N) rate (60, 120, 180 and 240 kg N ha−1 applied in three equal dressings at seeding after first second cuttings) stubble height (7, 14 21 cm) on dry matter (DM) yield, crude protein (CP) content, CP yield a sorghum–sudangrass hybrid [Sorghum bicolor (L.) Moench × Sorghum sudanense (Piper) Stapf., cv. Pioneer 988] three-cut system was investigated. The N had no significant effect third cuttings, but cutting DM yields increased significantly with increase rate. highest 9.1 t ha−1 obtained 80 kg N ha−1 for average 2 years cutting, difference found among 40, 60 rates. content were not affected by application cutting. Stubble However, it cuttings.
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