dc.contributor.author | Osiyo, RJO | |
dc.date.accessioned | 2013-05-15T08:43:45Z | |
dc.date.available | 2013-05-15T08:43:45Z | |
dc.date.issued | 1995-09 | |
dc.identifier.citation | Osiyo, R.J.O(1995). Pedotranslocation in Planosols and its management implications in Kinangop area, Kenya | en |
dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/23029 | |
dc.description | Msc Thesis | en |
dc.description.abstract | In this study transfer of clay and other soil constituents
was evaluated using soil samples from Kitiri Scheme in the
Kinangop plateau. The total area covered by the study which is
based on pedotranslocation in Planosols of the area is about 100
hectares. The approach used was basically physical and chemical
laboratory analyses. Parameters used include CEC, exchangeable
base, bulk density, pH, water retention, particle size analysis,
mineralogical composition and geochemical composition. Depth of
the slowly permeable layer and related management constraint was
noted in the field so as to provide a scientific basis for the
rational use of the soils.
The area was divided into 3 transects based on position in
slope before the Planosols were characterized. Samples were
obtained from representative profiles of each transect and
analyzed at the University's Soil Science laboratory jGeology
Department and Ministry of Natural Resources.
The parameters mentioned indicated the p o ss ib i 1 i ty of
clay translocation in the soil sola of the entire area since
there were significant differences '1 the values in adjacent
horizons especially between Bt and E horizons. The silt/silt +
clay ratios of adjacent horizons of th~ 3 transects especially
between E and Bt horizons were significantly different indicating
either clay accumulation or differences in parent material which
would release clays at different rates resulting into the
disparity obser?ed. However, despite the textural breaks observed
in the pedons studied, mineralogical tests provided evidence of
parent material uniformity hence differences in ratios reflect
clay accumulation. Textural breaks observed in sand and silt
fractions in E and B horizons is likely due to leaching of soil
components which has resulted to the slowly permeable layer (Bt
horizon).
Th~ slowly permeable layer occurs at an average depth of 4:
cm in the three transects. Imperfect drainage observed in the
field is due to the compact Bt-horizon. The horizon allows
shallow rooted crops to be grown but drainage conditions and low
temperatures restrict crop choice to mainly potatoes and cabbages
which are grown in relatively better drained sites. Otherwise
much of the area is under grass for grazing, land use which is
rational for the small scale farmers in the area | en |
dc.description.sponsorship | University of Nairobi | en |
dc.language.iso | en | en |
dc.subject | Pedotranslocation | en |
dc.subject | Planosols | en |
dc.subject | Kinangop | en |
dc.subject | Kenya | en |
dc.title | Pedotranslocation in Planosols and its management implications in Kinangop area, Kenya | en |
dc.type | Thesis | en |
local.publisher | College of Agriculture and Veterinary Sciences, University of Nairobi | en |