Seasonal light interception, radiation use efficiency, growth and tuber production of the tuber crop Plectranthus edulis

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Abstract

Plectranthus edulis (Vatke) Agnew (Lamiaceae) is an ancient Ethiopian crop that produces below-ground, edible tubers on stolons. It is grown from seed tuber pieces. There is thus far little quantitative information on dry matter production of this crop and parameters determining growth and yield. The objective of this study was to understand and quantify the growth of P. edulis, and identify the processes determining and limiting yield. Two similar experiments were carried out at two sites (Awassa and Wondogenet in southern Ethiopia) in a split-plot design with five blocks and cultivar (Lofuwa and Chankua) as main factor and sampling date [20 2-weekly sampling dates from 14 to 280 days after planting (DAP)] as split factor. The crop was unknown at the start and showed an unusual growth pattern, for which reasons growth was analysed at a basic level.
Original languageEnglish
Pages (from-to)153-164
JournalEuropean Journal of Agronomy
Volume45
DOIs
Publication statusPublished - 2013

Keywords

  • enset ensete-ventricosum
  • dry-matter production
  • southern ethiopia
  • field performance
  • potato minitubers
  • seed tubers
  • yield
  • establishment
  • emergence
  • nitrogen

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