1. Ng, J.F., O.H. Ahmed, M.B. Jalloh, L. Omar, Y.M. Kwan, A.A. Musah and K.H. Poong, 2022. Soil nutrient retention and pH buffering capacity are enhanced by calciprill and sodium silicate. Agronomy, Vol. 12. 10.3390/agronomy12010219.
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2. Paramisparam, P., O.H. Ahmed, L. Omar, H.Y. Ch’ng, P.D. Johan and N.H. Hamidi, 2021. Co-application of charcoal and wood ash to improve potassium availability in tropical mineral acid soils. Agronomy, Vol. 11. 10.3390/agronomy11102081.
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3. Palanivell, P., O.H. Ahmed, L. Omar and N.M.A. Majid, 2021. Nitrogen, phosphorus, and potassium adsorption and desorption improvement and soil buffering capacity using clinoptilolite zeolite. Agronomy, Vol. 11. 10.3390/agronomy11020379.
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4. Omar, L., O.H. Ahmed, M.B. Jalloh and N.M.A. Majid, 2021. Rice husk compost production and use in mitigating ammonia volatilization from urea. Sustainability, Vol. 13. 10.3390/su13041832.
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5. Ng, J.F., O.H. Ahmed, L. Omar, M.B. Jalloh, Y.M. Kwan, K.H. Poong and A.A. Musah, 2021. Combined use of calciprill and sodium silicate improves chemical properties of low-pH soil. Agronomy, Vol. 11. 10.3390/agronomy11102070.
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6. Luta, W., O.H. Ahmed, L. Omar, R.K.J. Heng and L.N.L.K. Choo et al., 2021. Water table fluctuation and methane emission in pineapples (Ananas comosus (L.) Merr.) Cultivated on a tropical peatland. Agronomy, Vol. 11. 10.3390/agronomy11081448.
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7. Krishnan, K., A.A. Ngerong, K. Ahim, O.H. Ahmed, M. Ali, L. Omar and A.A. Musah, 2021. Mitigating potassium leaching from muriate of potash in a tropical peat soil using clinoptilolite zeolite, forest litter compost, and chicken litter biochar. Agronomy, Vol. 11. 10.3390/agronomy11101900.
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8. Johan, P.D., O.H. Ahmed, L. Omar and N.A. Hasbullah, 2021. Phosphorus transformation in soils following co-application of charcoal and wood ash. Agronomy, Vol. 11. 10.3390/agronomy11102010.
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9. Johan, P.D., O.H. Ahmed, A. Maru, L. Omar and N.A. Hasbullah, 2021. Optimisation of charcoal and sago (Metroxylon sagu) bark ash to improve phosphorus availability in acidic soils. Agronomy, Vol. 11. 10.3390/agronomy11091803.
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10. Jeffary, A.V., O.H. Ahmed, R.K.J. Heng, L.N.L.K. Choo, L. Omar, A.A. Musah and A. Abdu, 2021. Nitrous oxide emissions in pineapple cultivation on a tropical peat soil. Sustainability, Vol. 13. 10.3390/su13094928.
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11. Hamidi, N.H., O.H. Ahmed, L. Omar and H.Y. Ch’ng, 2021. Soil nitrogen sorption using charcoal and wood ash. Agronomy, Vol. 11. 10.3390/agronomy11091801.
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12. Hamidi, N.H., O.H. Ahmed, L. Omar and H.Y. Ch'ng, 2021. Combined use of charcoal, sago bark ash, and urea mitigate soil acidity and aluminium toxicity. Agronomy, Vol. 11. 10.3390/agronomy11091799.
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13. Palanivell, P., O.H. Ahmed, O. Latifah and N.M.A. Majid, 2020. Adsorption and desorption of nitrogen, phosphorus, potassium, and soil buffering capacity following application of chicken litter biochar to an acid soil. Appl. Sci., Vol. 10. 10.3390/app10010295.
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14. Zaidun, S.W., M.B. Jalloh, A. Awang, L.M. Sam and N.A. Besar et al., 2019. Biochar and clinoptilolite zeolite on selected chemical properties of soil cultivated with maize (Zea mays L.). Eurasian J. Soil Sci., 8: 1-10.
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15. Omar, L., A.O. Haruna and M.N.M. Abdul, 2019. Paddy husk compost addition for improving nitrogen availability. Indian J. Agric. Res., 53: 165-171.
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16. Jeffary, A.V., A.O. Haruna, R.K.J. Heng, L.N.L.K. Choo and L. Omar, 2019. Horizontal and vertical emissions of carbon dioxide and methane from a tropical peat soil cultivated with pineapple (Ananas comosus (L.) Merr.). Sustainable Agric. Res., Vol. 8. 10.22004/ag.econ.301897.
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17. Omar, L., O.H. Ahmed and N.M.A. Majid, 2018. Amending chemical fertilizers with rice straw compost and clinoptilolite zeolite and their effects on nitrogen use efficiency and fresh cob yield of Zea mays L. Commun. Soil Sci. Plant Anal., 49: 1795-1813.
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18. Latifah, O., O.H. Ahmed and N.M.A. Majid, 2018. Soil pH buffering capacity and nitrogen availability following compost application in a tropical acid soil. Compost Sci. Util., 26: 1-15.
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19. Latifah, O., O.H. Ahmed and N.M.A. Majid, 2017. Short term enhancement of nutrients availability in Zea mays L. cultivation on an acid soil using compost and clinoptilolite zeolite. Compost Sci. Util., 25: 22-35.
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20. Latifah, O., O.H. Ahmed and N.M.A. Majid, 2017. Enhancing nitrogen availability, ammonium adsorption-desorption, and soil pH buffering capacity using composted paddy husk. Eurasian Soil Sci., 50: 1483-1493.
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21. Latifah, O., O.H. Ahmed and N.M.A. Majid, 2017. Enhancing nitrogen availability from urea using clinoptilolite zeolite. Geoderma, 306: 152-159.
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22. Omar, L., A.O. Haruna and N.M. Majid, 2016. Effect of organic amendment derived from co-composting of chicken slurry and rice straw on reducing nitrogen loss from urea. Commun. Soil Sci. Plant Anal., 47: 639-656.
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