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International Journal of Soil Science
  Year: 2016 | Volume: 11 | Issue: 1 | Page No.: 14-18
DOI: 10.3923/ijss.2016.14.18
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Pedogenesis of Soils of Two Tropical Microclimates in Owerri Area Southeastern Nigeria

E.U. Onweremadu and K.D. Peter

We investigated pedogenic processes taking place in two microclimates in Owerri area, Southeastern Nigeria. Target sampling technique was used and a soil profile was sunk in each microclimate, namely mixed vegetation and pineforest. Each profile was dug and described according FAO procedure. Some soil properties were studied in the field and laboratory using routine analytical tools. Soil temperature and moisture were studied for 5 years and mean values were reported. Results showed dominance of littering, melanization, eluviation, illuviation, leaching and decomposition processes in the studied pedons although the rate varied among mixed vegetation and pineforest. Stronger and darker peds were recorded on soils developed under mixed vegetation. Soils were sandy in both vegetations. Clay bulge was distinct in soils developed under mixed forest and ranged from 90-150 g kg–1 unlike soils of the pine forest (50-120 g kg–1). Soils under mixed vegetation were more porous (37-52%) compared with 31-47% recorded in soils under pine forest. High values of organic carbon (20 g kg–1) was found in epipedons of soils under mixed vegetation compared with 11.0 g kg–1 obtained in soils of the pine forest. Base saturation, effective caution exchange capacity and calcium-magnesium ratio values were higher in soils under mixed vegetation. Soil temperature values were higher in pine forest ranging from 14.3-14.9% while the reverse was the case in soil moisture when compared values reported in mixed vegetation.
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How to cite this article:

E.U. Onweremadu and K.D. Peter, 2016. Pedogenesis of Soils of Two Tropical Microclimates in Owerri Area Southeastern Nigeria. International Journal of Soil Science, 11: 14-18.

DOI: 10.3923/ijss.2016.14.18


17 December, 2015
B.P.Bhaskar, principal scientist , ICAR-NBSS&LUP, amravati road, Nagpur:
this article is quite interesting highlighting the pedogenesis of two tropical soils under mixed forest and pine vegetation. The temparature variations under these vegetation is quite interesting and important observation reported in the article.

with regards
yours sincerely
29 December, 2015
K.D. Peter:

Thanks for your wonderful comments.





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