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Asian Journal of Plant Sciences

Year: 2006 | Volume: 5 | Issue: 3 | Page No.: 508-510
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Authors

M.H. Siddiqui

F.C. Oad

G.H. Jamro

Keywords

Research Article

Emergence and Nitrogen Use Efficiency of Maize under Different Tillage Operations and Fertility Levels

M.H. Siddiqui, F.C. Oad and G.H. Jamro
The field experiment was conducted at Students Farm, Sindh Agriculture University, Tandojam, Pakistan to observe the emergence of maize and nitrogen use efficiency of the crop under different fertility regimes (0-0, 90-00, 90-60, 90-90, 90-120, 150-00, 150-60, 150-90 and 150-120 NP kg ha-1) applied in the plots plowed through tillage practices with cultivator, chisel and desi plows. The better emergence was obtained with 90-90 NP kg ha-1. The seedling emergence decreased at higher doses of N and P. The interaction of tillage x fertilizer revealed that fertilizer at the rate of 90-150 kg ha-1 and tillage practices with cultivator exhibited higher seedling emergence, while the plots ploughed with chisel plow and desi plow recorded decreased emergence. However, chisel plowing recorded higher fertilizer nitrogen use efficiency than the plots ploughed by cultivator or desi plough. Nitrogen use efficiency at high levels of nitrogen applications was low than in the low rates of N incorporation. It was concluded that tillage practices should be performed with cultivator and 90 kg N ha-1 is suitable combination for seedling emergence and crop yield of maize.
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