Journal of
Horticulture and Forestry

  • Abbreviation: J. Hortic. For.
  • Language: English
  • ISSN: 2006-9782
  • DOI: 10.5897/JHF
  • Start Year: 2009
  • Published Articles: 291

Full Length Research Paper

Comparative growth and dry matter accumulation in selected tree species in response to quarry dust media amendments

Joyce Kemunto Ayusa
  • Joyce Kemunto Ayusa
  • Department of Landscape and Environmental Sciences, School of Agriculture and Environmental Sciences, Jomo Kenyatta University of Agriculture and Technology, P. O. Box 62000-00200, Nairobi, Kenya.
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John Bosco Mukundi
  • John Bosco Mukundi
  • Department of Landscape and Environmental Sciences, School of Agriculture and Environmental Sciences, Jomo Kenyatta University of Agriculture and Technology, P. O. Box 62000-00200, Nairobi, Kenya.
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Aggrey Ochieng’ Adimo
  • Aggrey Ochieng’ Adimo
  • Department of Landscape and Environmental Sciences, School of Agriculture and Environmental Sciences, Jomo Kenyatta University of Agriculture and Technology, P. O. Box 62000-00200, Nairobi, Kenya.
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  •  Received: 16 January 2020
  •  Accepted: 03 March 2020
  •  Published: 31 December 2020

Abstract

Field and laboratory trials were conducted to assess the effect of quarry dust amendments media on plant growth (biomass) of various selected tree species for re-vegetation purposes of post quarry sites in Ndurugu, Kiambu-Kenya. A randomized complete block design experiment was piloted with two-month-old nursery established seedlings of four tree species (Acacia abyssinica, Casuarina equisetifolia, Eucalyptus grandis and Schinus molle) planted in four different media treatments. The media treatments were quarry dust (QD), and quarry dust amendments of a combination of quarry dust with red soil (QD+RS), with manure (QD+MN), and with forest soil (QD+FS), in a ratio of 2:1. Destructive sampling was done in three phases after the third, sixth, and ninth months of transplanting. Measurements for tree height, fresh and dry weights were done bi-weekly in the field and laboratory. Analysis of variance (ANOVA) was conducted, and results showed a substantial difference in time-species interaction on belowground, aboveground biomass, and root shoot ratio, at p ≤ 0.05. Generally, the results obtained from the research study point out that quarry dust-manure combination has the prospective to influence the growth of the plant species favorably. The medium can be recommended for the re-vegetation process in post quarry sites in Ndarugu, Kenya.

Key words: Elite trees, quarry dust, plant biomass, re-vegetation, root shoot ratio.