Effect of organic based N fertilizer on dry matter (Zea mays L.), ammonium and nitrate recovery in an acid soil of Sarawak, Malaysia

• Main Authors: Kasim, Susilawati, Ahmed, Osumanu Haruna, Nik Ab. Majid, Nik Muhamad, Yusop, Mohd Khanif, Jalloh, Mohamadu Boyie
• Format: Article
• Language: English
• Published: Science Publications 2009
• Online Access: http://psasir.upm.edu.my/id/eprint/14282/1/ajassp.2009.1289.1294.pdf; http://psasir.upm.edu.my/id/eprint/14282/; http://thescipub.com/html/10.3844/ajassp.2009.1289.1294

Problem statement: Exchangeable ammonium (NH4+) could be recovered by humic and fulvic acids from humic substances. The ability of these acids in fixing or retaining NH4+ has been demonstrated in many findings and reports. Both acids could affect the plant growth, nutrients uptake by enhancing photo...