Pemanfaatan Abu Gigi dan Tulang Sapi sebagai Sumber Pupuk Fosfat pada Beberapa Masa Inkubasi di Tanah Inceptisol

Abstract

This laboratory research aims to investigate the potential of cow bone ash and cow teeth ash as substitutes for SP-36 fertilizer. This research was conducted at the Research and Technology Laboratory of the Faculty of Agriculture, Universitas Sumatera Utara, Medan. The study employed a 2-factor Completely Randomized Design (CRD). The first factor was the type of P fertilizer, namely: control (P0), SP-36 with a dose of 200 ppm P (PS), cow bone ash with a dose of 200 ppm P (PT), and cow teeth ash with a dose of 200 ppm P (PG). The second factor was the incubation period, which consisted of 0 days (I0), 10 days (I10), 20 days (I20), and 30 days (I30), with each treatment replicated 3 times. The parameters observed included pH H2O and P-available. This research showed that the application of cow bone ash and cow teeth ash is capable of increasing pH H2O and providing P in Inceptisol soil. The application of cow bone ash and cow teeth ash was more effective in increasing pH H2O and P-available compared to SP-36 fertilizer, showing their capacity to replace SP-36 fertilizer.