Humic substances and urea use in agriculture by Ahmad, Osumanu Haruna

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Zeolite in maize (Zea mays) cultivation: preliminary information on nutrients availability and use efficiency by Ahmad, Osumanu Haruna, G., Sumalatha

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Towards efficient utilization of nitrogen based fertilizers by Ahmad, Osumanu Haruna, Nik Majid, Nik Muhamad

Partitioning carbon dioxide emission and assessing dissolved organic carbon leaching of a drained peatland cultivated with pineapple at Saratok, Malaysia by Lim, Liza Nuriati Kim Choo, Ahmad, Osumanu Haruna

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Ammonia volatilization and ammonium accumulation from urea mixed with zeolite and triple superphosphate by Ahmad, Osumanu Haruna, Hussin, Aminuddin, Mohd Hanif, Ahmad Husni

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Spatial variability of pineapple yields on tropical peat. by Balasundram, Siva Kumar, Mohd Hanif, Ahmad Husni, Ahmad, Osumanu Haruna

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Mitigating ammonia volatilization from urea in waterlogged condition using Clinoptilolite zeolite by Perumal, Palanivell, Ahmad, Osumanu Haruna, Nik Majid, Nik Muhamad, Kasim, Susilawati

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Using clinoptilolite zeolite for enhancing potassium retention in tropical peat soil by Ahmad, Osumanu Haruna, Azyumi, Nur Asyira, Jalloh, Mohamadu Boyie, Jol, Hamdan

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Response of Brassica rapa var. parachinensis grown on copper contaminated Oxisol, Inceptisol and Histosol by Hani, Nurul Wahida, Abdul Rahim, Anuar, Ishak, Che Fauziah, Ahmad, Osumanu Haruna

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Recycling of sago (Metroxylon sagu) bagasse with chicken manure slurry through co-composting by Ch'ng, Huck Ywih, Ahmad, Osumanu Haruna, Kasim, Susilawati, Nik Majid, Nik Muhamad