Effect of Palm Oil Mill Solid Waste and Bioneensis Biofertilizer on Carbon Organic, P-Available, and Mustard Growth in Ultisol Soil

Kemala Sari Lubis, Rima Asi Agustina Napitupulu

Abstract: This research was conducted in the Greenhouse and Research and Technology Laboratory of the Faculty of Agriculture, University of North Sumatra from May to September 2023. This study used Randomized Group Design (RAK) with 2 treatment factors and 3 replications. The first factor is palm oil mill solid waste (solid) consisting of 4 treatment levels, namely: (S0) control without palm oil mill solid waste (solid), (S1) palm oil mill solid waste (solid) 15 tonss/ha, (S2) palm oil mill solid waste (solid) 30 tonss/ha, (S3) palm oil mill solid waste (solid) 45 tons/ha. The second factor is Bioneensis biofertilizer (B) with 3 levels, namely: (B0) control without Bioneensis biofertilizer, (B1) 4 tons/ha, and (B2) 8 tonss/ha. The parameters observed were soil C-organic, soil P-available, number of leaves and mustard weight. The results showed that the application of palm oil mill solid waste (solid) significantly increased soil C-organic, soil P-available, number of leaves and mustard weight. The application of Bioneensis biofertilizer significantly increased soil C-organic, soil P-available and the number of mustard leaves. Their interaction significantly increased soil P-available.

Keywords: Bioneensis biofertilizer, Mustard (Brassica juncea L.), Palm oil mill solid waste (solid), Ultisol