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

Mizan Amare, Dawit Fisseha and Christian Andreasen
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Mizan Amare: Ethiopian Institute of Agricultural Research, Tigray Agricultural Research Institute, Humera Agricultural Research Center, Crop Department, Humera P.O. BOX 62, Ethiopia
Dawit Fisseha: Ethiopian Institute of Agricultural Research, Tigray Agricultural Research Institute, Humera Agricultural Research Center, Crop Department, Humera P.O. BOX 62, Ethiopia
Christian Andreasen: Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegaard Allé 13, DK-2630 Taastrup, Denmark

Agriculture, 2019, vol. 9, issue 10, 1-12

Abstract: 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.

Keywords: African crop; benne; oilseeds; sesamum (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2019
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