Subsoiling and Incorporation of Boiler Ash for Restoration of Degraded Red Yellow Podzolic for Sugarcane Plantation at Sulawesi, Indonesia

Salapu Pagiu, W.H. Utomo, D. Suprayogo and W.H. Nugroho

International Journal of Soil Science 11 ( 4 ): 123 - 129 , 2016