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

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 ？1, and the yield ha ？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 ？1. Applying 92 kg N ha ？1 resulted in a yield of 917.8 kg ha ？1 and a plant height of 104 cm. An application of 92 kg P ha ？1 with 36 Kg N ha ？1 gave a yield of 908 kg ha ？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 ？1, and yield ha ？1. Applying 128 kg N ha ？1 and 92 kg P ha ？1 gave the biggest yield (1043 kg ha ？1). However, application of 41 kg N ha ？1 and 46 kg P ha ？1 gave the largest marginal rate of return. View Full-Tex