Effect of mixing urea with humic acid and acid sulphate soil on ammonia loss, exchangeable ammonium and available nitrate

• Main Authors: Mohd Yusuff, Mohd Taufik, Ahmed, Osumanu Haruna, Nik Ab. Majid, Nik Muhamad
• Format: Article
• Language: English
• Published: Science Publications 2009
• Online Access: http://psasir.upm.edu.my/id/eprint/14271/1/ajessp.2009.588.591.pdf; http://psasir.upm.edu.my/id/eprint/14271/; http://www.thescipub.com/abstract/?doi=ajessp.2009.588.591
• Institution: Universiti Putra Malaysia

Problem statement: Ammonia loss due to rapid hydrolysis of urea in soil following surface application can be substantial. Ammonia loss in agriculture is estimated to be 1 to 60%. This laboratory study compared the effect of three different urea-humic acid-acid sulphate soil mixtures on NH3 loss and...