T H E U S E O F O R G A N I C W A S T E S I N RESTORING THE PRODUCTIVITY OF DEGRADED SOILS IN NORTHERN N I G E R I A N S A V A N NA
T H E U S E O F O R G A N I C W A S T E S I N RESTORING THE PRODUCTIVITY OF DEGRADED SOILS IN NORTHERN N I G E R I A N S A V A N NA
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Date
1989-04
Authors
ABDULRAHMAN, SAMINU IBRAHIM
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Abstract
Two greenhouse experiments were conducted. The first
experiment was to test the effectiveness of various organic
materials in restoring the productivity of degraded sandy
soils from Dambatta (Kano State) and Maiaduwa (Katsina
State) - The amendments used were cow dung, poultry
droppings, rice straw and sawdust.These were used either
alone or with fertilizer and in addition to control
without amendment were laid out in a randomized complete
block design with three replications. The test crop used
was maize which was planted after a four week incubation
period- Plant height and girth were measured at weekly
intervals from 10 days after emergence while dry matter
yield of leaves, stems and roots were taken after
harvesting- The concentrations of macro and micronutrients
in the plant parts were also determined.
A second cropping was immediately carried out after
harvesting and remixing of the soil- Parameters observed in
the first cropping were also monitored during the second
cropping.
In the second experiment, the effectiveness of ash as a
nutrient source in improving crop growth was evaluated.
A soil collected from a field at the research farm of the
Institute for Agricultural Research, Samaru was used
in this study. The ash obtained by burning crop
-VIIresidue
in a drum was used at the rate of 0, .1000,
2000, 3000 and 4000 kg/ha. This was applied either alone
or with N fertilizer at the rate of 0,120,240ppm or with
complete nutrient solution(CNS)- Maize was used as the
test crop and the parameters measured included plant height
and girth at weekly intervals, dry matter yields of
leaves, stem and roots and the nutrient element
concentrations in the three plant parts.
Poultry droppings, cow dung and rice straw all improved
crop performance as reflected in plant height, girth and
dry matter yields while sawdust depressed all three
parameters. Fertilizer addition complemented the effects
of these amendments. Poultry droppings, cow dung and rice
straw increased concentrations of plant nutrients while
sawdust decreased these. Poultry droppings proved best
in restoring the productivity of these soils followed by
cow dung then rice straw. Crop performance was generally
better on Maiaduwa than Dambatta soil and also generally
better in the second than the first cropping.
Increasing levels of ash improved the growth of maize
crop more so with the addition of North
Description
A thesis submitted to the Post Graduate School, Ahmadu
Bello University, in partial fulfillment of the requirements
for the award of M.Sc. degree in Soil Science ,
Department of Soil Science
Faculty of Agriculture
Ahmadu Bel1o University
Zaria,Nigeria.
April, 1989.
Keywords
U S E,, O R G A N I C,, W A S T E S I N,, RESTORING,, PRODUCTIVITY,, DEGRADED,, SOILS,, NORTHERN,, N I G E R I A N,, S A V A N NA.