The Effect of N and P Fertilizers on Yield and Yield Components of Sesame (Sesamum indicum L.) in Low-Fertile Soil of North-Western Ethiopia
2019
Mizan Amare | Dawit Fisseha | Christian Andreasen
The impact of fertilizer of N and P on the yield of sesame in north-western Ethiopia was investigated. Field experiments were conducted in 2010 and 2011. Six levels of urea and six levels of di-ammonium phosphate were applied using a factorial completely randomized block design. Application of N and P increased the plant height, the number of capsules plant&minus:1, and the yield ha&minus:1. The number of days to flower decreased with increasing rates of nitrogen. The number of days to maturity was largest (91 days) at a rate of 23 kg N ha&minus:1. Applying 92 kg N ha&minus:1 resulted in a yield of 917.8 kg ha&minus:1 and a plant height of 104 cm. An application of 92 kg P ha&minus:1 with 36 Kg N ha&minus:1 gave a yield of 908 kg ha&minus:1 and a plant height of 103.4 cm. The interaction between N and P significantly affected the number of days to flower, plant height, the number of capsules plant&minus:1, and yield ha&minus:1. Applying 128 kg N ha&minus:1 and 92 kg P ha&minus:1 gave the biggest yield (1043 kg ha&minus:1). However, application of 41 kg N ha&minus:1 and 46 kg P ha&minus:1 gave the largest marginal rate of return.
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