Nur Nabilah Abdul Khalid;A. Zaidon;Ahmad Husni Mohd Hanif;Ahmad Fariz Mohamed;Seng Hua Le

Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia (UPM), UPM Serdang, Malaysi;Institute of Tropical Forestry and Forest Products, Universiti Putra Malaysia (UPM), UPM Serdang, Malaysia;Department of Forest Production, Faculty of Forestry, Universiti Putra Malaysia (UPM), UPM Serdang, Malaysia;Department of Land Management, Faculty of Agriculture, Universiti Putra Malaysia (UPM), UPM Serdang, Malaysia

Woodchips fertilizer;Slow-release;Urea;Release pattern;Nitrogen deposition;PHYSICAL-PROPERTIES;WOO

The fertiliser industry faces a continuing challenge to improve the efficiency of their products, particularly of nitrogenous fertilisers, and to minimise adverse impacts. Therefore, a new slow release fertilizer, urea-impregnated woodchips from tropical plant biomass (oil palm frond and rubberwood), was developed. The morphology of the impregnated woodchips was investigated by scanning electron microscopy and the success of impregnation of urea and nitrogen deposition into the woodchips was confirmed by energy dispersive X-ray spectrometry. When nitrogen release patterns from impregnated woodchips fertiliser were simulated using a soil solution and distilled water as leaching solutions in a static condition for 768 h, release was slow and steady, although the release rate was lower in distilled water than in the soil solution.