African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6638

Full Length Research Paper

Influences of mineral nitrogen and phosphorous fertilization on yield and yield contributing components in hot pepper (Capsicum annuum L.)

Abebayehu Aticho
  • Abebayehu Aticho
  • Department of Natural Resource Management, Jimma University. Ethiopia.
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Misginaw Tamirat
  • Misginaw Tamirat
  • Department of Agricultural Economics and Rural Development, Jimma University, Ethiopia
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Abraham Bantirgu
  • Abraham Bantirgu
  • Department of Natural Resource Management, Jimma University. Ethiopia.
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Solomon Tulu
  • Solomon Tulu
  • Department of Plant and Horticultural Sciences, Jimma University, Ethiopia.
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Alemayehu Regassa
  • Alemayehu Regassa
  • Department of Natural Resource Management, Jimma University. Ethiopia.
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Bayu Dume
  • Bayu Dume
  • Department of Natural Resource Management, Jimma University. Ethiopia.
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  •  Accepted: 22 January 2014
  •  Published: 13 February 2014

Abstract

Hot pepper is widely cultivated in different parts of Ethiopia but, its productivity is low due to inadequate nutrient supply, moisture and poor agronomic practices. This experiment was conducted to determine the amount of N and P nutrients required to produce optimum amount of hot pepper marketable yield. Four different rates of DAP and urea fertilizers (25, 50, 75 and 100 kg/ha and control) were used as treatments. There was significant difference (p < 0.05) among treatment means for marketable yield; and highly significant difference (p < 0.01) for branch, fruit and height were observed. Mean comparison for marketable yield was non-significant difference (p > 0.05) between the control, and plots received 25 and 75 kg/ha DAP and urea. In contrast, the amount of marketable yield harvested from an experimental plots received 50 and 100 kg of DAP and urea fertilizers per hectare were significantly different (p < 0.05) from control. Mean comparison revealed marketable yield obtained from 50, 75 and 100 kg of DAP and urea fertilizers were similar thus applying 50 kg/ha is economically better than other treatments. Liner association was observed between marketable yield and amounts of DAP and urea fertilzers treatments. A unit increament in the rate of DAP and urea application contributed for the rise of pods per plant, height, branch per plant, and marketable yield by 2.07, 2.04, 6.67 and 62.22, respectively.

Key words: Hot pepper, marketable yield, mineral N and P fertilizers, yield contributors.