Determination of seed and nitrogen rate on yield upland Rice (Oryza Sativa L.) in western Oromia, Ethiopia.
Keywords:
Economic analysis, fertilizer rates, seed, yield and soil fertilityAbstract
A field experiment was conducted at Bako and Chewaka locations in western Oromiya to determine the optimum seed and nitrogen rate that maximizes the yield. The treatments were arranged in factorial combination with five nitrogen rates (35, 46, 58, 69, and 81 kg/ha N) and four seed rates (60, 80, 100, and 120 kg/ha) tested on Chewaka variety with a uniform application of 125 kg/ha NPS. A randomized complete block design with three replications was used. Plant height was significantly (P<0.01) different due to the main effect of N. However, the number of filled and unfilled grains, aboveground biomass, grain yield, and harvest index were significantly (P<0.01) influenced due to the main and interaction effects of nitrogen (N) and seed rates. Thus, economic analysis showed that 58 kg/ha N and 80 kg/ha seed rates gave a net benefit (65684.9 birr/ha), were economically feasible compared to the other treatments. Therefore, it is recommended to use 58 kg/ha N and 80 kg/ha seed rates on the Chewaka variety since it is economically feasible for the farmers.
References
Mendeley, American psychological Association, seventh edition
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