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|Title: ||Comparative Evaluation of Short Term Organic Carbon Sequestration under Different Nutrient Managements during Cropping Cycles on a Ferric Acrisol in Ghana|
|Authors: ||Logah, Vincent|
Tetteh, Francis K.M.
Safo, Ebenezer Y.
|Keywords: ||carbon sequestration|
|Issue Date: ||2011|
|Publisher: ||IACSIT Press|
|Citation: ||2011 International Conference on Environment and Industrial Innovation IPCBEE vol.12 (2011)|
|Abstract: ||There is scanty information on the short term effect of soil management practices on soil carbon
sequestration during cropping cycles in the tropics. This study is a short term experiment conducted in 2006
and 2007 to evaluate the extent to which nutrient management strategies could impact soil carbon
sequestration during cropping seasons in the short term. The study was conducted on a Ferric Acrisol in the
semi-deciduous forest zone of Ghana and was laid in a split plot, arranged in a randomized complete block
design with three replications. Management strategies such as poultry manure - PM (4 t/ha), chemical
fertilizer (CF) - NPK 15-15-15 (90-60-60 kg/ha), complementary application of poultry manure and chemical
fertilizer – PM + CF (45-30-30 kg/ha NPK + 2 /ha poultry manure) and a control (no amendment) were
evaluated under selected cropping systems such as continuous maize (CM), maize/soybean (M/S)
intercropping and maize cowpea (M/C) rotation. Soil samples were taken from treated plots at a depth of 0 –
15 cm and analyzed for soil organic carbon.
Results indicated a significant (P < 0.05) build up of soil organic carbon under PM + CF and CM system
from 2006-major season to 2007 –major season. The PM + CF recorded soil organic carbon (SOC) values of
1.18 – 1.31% from 2006 -major to 2007- major season which indicated that 0.13 % carbon was sequestered
within the short period. Continuous maize cropping system recorded an increase in SOC from 1.19 % in 2006
– major season to 1.31 % in 2007- major season. Crop residues under PM + CF and PM managements
sequestered the highest carbon values of 49.05 and 49.11% respectively. The implication is that crops under
PM + CF and PM amendments can serve as good carbon sinks to reduce global warming and at the same
time produce higher soil organic carbon which can enhance high soil productivity especially on low nutrient
|Description: ||Paper presented at the 2011 International Conference on Environment and Industrial Innovation
|Appears in Collections:||College of Agric and Natural Resources|
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