ANALISIS PERMEABILITAS TANAH LAPISAN ATAS DAN BAWAH DI LAHAN KOPI ROBUSTA

Coffee (Coffea sp.) is one of the leading commodities in Indonesia for it has a high economic value. In Bangelan Village, Malang Regency, there company that manages robusta coffee commodity. The land was converted into plantation from forest land. conversion caused decreasing number total soil pores lower than This will make difficult water to absorb soil. research conducted Afdeling Besaran, PT. Perkebunan Nusantara XII Kebun elucidate value permeability and nature relationship between them. result this indicated on each map unit category fast class slightly class. highest found 2 at 56 years average age field, with depth 6.03 cm hour-1, 7.95 7.82 hour-1. Soil influenced by porosity, sand silt positive correlation way. addition, aggregate stability, bulk density clay also significantly affected negative Permeability production plants way 16.09%.