Assessment of Nutrients Mineralization in Degraded Soil Amended With Coal

• A. O. A. Ilori

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

• O. S. Shittu

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

• T. Y. Akande

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

• O. Amoloja

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

• S. O. Ajayi

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

• S. A. Ilo

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

• A. O. Akindahunsi

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

• S. O. Saleeman

  Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

  Author

Poor management practices degrade agricultural lands. Composite sample taken at a depth of 0-30 cm from degraded soil in Federal University Oye-Ekiti, Nigeria was amended with coal in an incubation study. One kg potted soil replicated thrice were amended with coal at the rate of 0, 5, 10, 15 and 20 ton ha -1 and arranged in a complete randomized design (CRD). Scooped samples at 3, 14, 28, 42 and 56 days of incubation were analysed for selected chemical properties. The pH decreased significantly with the days of incubation while other soil properties increased except for available phosphorus, total nitrogen, sodium, exchangeable aluminum and cation exchange capacity, having irregular trends. For amendment rates, 0 ton ha -1 recorded a significantly higher pH of 4.69 while rate 20 ton ha -1 had the highest but nonsignificant organic carbon (OC, 17.43 g kg-1) but other soil parameters were statistically the same. Incubation days correlated significantly with all parameters except the available phosphorus, while coal rates were generally non-significantly correlated. Generally, nutrients mineralization increased with days of incubation but exhibited an irregular pattern with coal amendment rates. Therefore, 15-ton ha-1 coal is suggested for the improvement of degraded soils as the rate was not significantly different from the higher amendment rate.

1. A. O. A. Ilori, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

2. O. S. Shittu, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

3. T. Y. Akande, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

4. O. Amoloja, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

5. S. O. Ajayi, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

6. S. A. Ilo, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

7. A. O. Akindahunsi, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

8. S. O. Saleeman, Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

   Department of Soil Science and Land Resources Management, Federal University Oye-Ekiti, Ekiti-State, Nigeria

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