Pengaruh Pemberian Bahan Organik dan Asap Cair Hasil Pirolisis Terhadap Pertumbuhan dan Serapan Hara N, P dan K Tanaman Kedelai (Glycine Max L.) di Tanah Ultisol

Abstract

This research aims to determine the effect of providing organic materials and liquid smoke from empty oil palm fruit bunches and interaction of organic materials and liquid smoke from empty oil palm fruit bunches in increasing growth and N, P and K nutrient uptake of soybean plants (Glycine max L) in Ultisol soil. This research was carried out in the Greenhouse and Soil Biology Laboratory Faculty of Agriculture, University of North Sumatra in October 2023 – January 2024. This research uses a Randomized Block Design (RAK) with 2 treatment factors and 3 replications. The first factor is organic material with 4 levels, namely: (P0) without application of organic materials, (P1) 135 g biochar tkks/plant, (P2) 135 g compost tkks/plant, (P3) 67.5 g biochar ttks/plant and 67.5 g of tkks compost/plant. The second factor is liquid smoke empty oil palm bunches with 3 levels, namely: (A0) without smoke application liquid, (A1) 2% liquid smoke tkks/plant, (A2) 4% liquid smoke tkks/plant. The parameters observed were pH H2O, Plant Height (cm), Number of Leaves (Strand), Wet Weight Plant, Dry Weight of Head, Wet Weight of Roots, Root Dry Weight, Nutrient N Content, Nutrient P Content, Nutrient K Content, Nutrient N Uptake, Nutrient P uptake and K nutrient uptake. The research results show that the provision of organic material from empty oil palm fruit bunches has a real effect on plant height, number of leaves, weight wet and dry weight of shoots, wet weight of roots and dry weight of roots, P nutrient content, K and uptake of nutrients N, P and K. Providing liquid smoke resulting from pyrolysis of bunches significant effect on wet weight and dry weight of shoots, wet weight root, weight uptake of nutrients N, P and K.. The interaction between the two has a significant effect on wet weight and dry weight of roots.