Research Article

Soil Organic Carbon Fractions and Aggregation of a Tropical Alfisol as Affected by Plant Residues

ADESODUN Johnson Kayode1*, Udom B. E.2, Abudu O. S.3, Adejuyigbe C. O.,4, Enikuomehin O. A5, Thannia B. M3, Oke O. O.3, Olowokere F. A.4, Oyegoke, C.O,6, Mbila M.7
1 Department of Soil Science and Land Management, University of Agriculture, Abeokuta. Nigeria
2 Department of Crop and Soil Science, Faculty of Agriculture, University of Port Harcourt, Port Harcourt, Rivers State, Nigeria.
3 Department of Soil Science and Land Management, Federal University of Agriculture, P. M. B. 2240, Abeokuta 110001, Ogun-State, Nigeria
4 Department of Soil Science and Land Management, Federal University of Agriculture, P. M. B., 2240, Abeokuta, Ogun-State, Nigeria
5 Department of Crop Protection, Federal University of Agriculture, P. M. B. 2240, Abeokuta 110001, Ogun-State, Nigeria
6 Department of Soil Science and Land Management, College of Plant Science and Crop Production, Federal University of Agriculture, Abeokuta, P.M.B. 2240, Ogun State, Nigeria.
7 Department of Biological and Environmental Sciences, Alabama Agricultural and Mechanical University, 4900 Me-ridian Street North, Normal, Alabama 35762, USA
* Corresponding author: adesodunjk@funaab.edu.ng
Published: Apr, 2020
DOI: 10.67042/njss.2020.uw66yki5
Pages: 92-101
Views: 509
Downloads: 742

Abstract

Incorporation of plant residues into soil plays a vital role in enhancing the quality of fragile tropical soils. This study evaluated the short-term effect of plant residues of different quality on organic carbon (OC) fractions, carbon management indices and stability of a sandy loam soil with low (<2> 0.25 mm size over < 0.25 mm was observed with the addition of residues which indicates binding of smaller aggregates into large fractions, while AR (11.97) was highest with CO 10 t ha-1. Aggregate stability showed MWD (2.02 mm) was highest in soils treated with CO followed by PM (MWD = 1.86 mm) both at 20 t ha-1, but SI trend was higher with the addition of LL and PM. Computed micro-aggregate stability indices were generally similar for all treatments. High positive correlations were obtained between MWD and CL (r = 0.634), LI (r = 0.686) and CMI (r = 0.641) with addition of Leucaena leucocephala. In conclusion, L. leucocephala, followed by P. maximum and C. odorata provided short-term improvement in physical quality of this soil over other plant residues.

Keywords

Plant residues Organic carbon fractions Soil quality Aggregate ratio

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How to Cite

Kayode, A. J., E., U. B., S., A. O., O.,, A. C., A, E. O., M, T. B., O., O. O., A., O. F., C.O,, O., & M., M. (2020). Soil Organic Carbon Fractions and Aggregation of a Tropical Alfisol as Affected by Plant Residues. Nigerian Journal of Soil Science, 30(1), 92-101. https://doi.org/10.67042/njss.2020.uw66yki5

A. J. Kayode, U. B. E., A. O. S., A. C. O.,, E. O. A, T. B. M, O. O. O., O. F. A., O. C.O,, and M. M., "Soil Organic Carbon Fractions and Aggregation of a Tropical Alfisol as Affected by Plant Residues," Nigerian Journal of Soil Science, vol. 30, no. 1, pp. 92-101, April 2020. doi: 10.67042/njss.2020.uw66yki5

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