dc.contributor.author | Mwonga, SM | |
dc.date.accessioned | 2013-05-15T07:12:42Z | |
dc.date.available | 2013-05-15T07:12:42Z | |
dc.date.issued | 1986 | |
dc.identifier.citation | Mwanga, S.M(1986). The effects of cultivation upon some physical and chemical properties of three Kenya soils | en |
dc.identifier.uri | http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/22867 | |
dc.description | Msc Thesis | en |
dc.description.abstract | Studies to evaluate some chemical and physical properties
of cultivated and adjacent uncultivated (virgin or grassland)
soils of three Kenyan soils (Andoso1, Luviso1 and
Nitoso1 from Kiambu, Machakos and Kisii, respectively) were
undertaken. The data indicate that considerable adverse
changes had taken place in two of the soils (Andoso1 and
Luviso1) due to their continuous use. The observed changes
mainly with organic carbon, total nitrogen and bulk density
had mostly occurred in the upper 0-10 cm layer and rarely
below 20 cm depth. In general, tillage of land appears to
have adversely affected some soil properties (organic carbon,
total nitrogen and bu1 k dens ity) whi ch are inportant in good
crop production. The data from Nitoso1 however indicate that
these adverse changes can be slowed or reversed if appropriate
farming methods are employed. In many instances, the
site under minimum tillage showed slightly superior soil properties
than the adjacent grassland sites. The deterioration
in soil properties due to cultivation were therefore found
to be particularly severe with the Luviso1 than with the
Andoso1 and Nitoso1 soils. The vulnerability of this soil to
deterioration was associated to the soil management (i.e.
harsh treatment both cultural and environmental) it receives | en |
dc.description.sponsorship | University of Nairobi | en |
dc.language.iso | en | en |
dc.subject | Cultivation | en |
dc.subject | Soil physical properties | en |
dc.subject | Soil chemical properties | en |
dc.title | The effects of cultivation upon some physical and chemical properties of three Kenya soils | en |
dc.type | Thesis | en |
local.publisher | Department of soil science, University of Nairobi | en |