PENGARUH KOMPOSISI MEDIA SAPIH DAN DOSIS PUPUK NPK TERHADAP PERTUMBUHAN BIBIT MAHONI (Swietenia macrophylla King) DI PERSEMAIAN

Abstract

Keywords: The aim of the experiment was to examine effects of the composition media and NPK fertilizer dosage to the growth of mahagony () seedlings in the nursery. This experiment was conducted in the nursery of the Forest Research Institute Palembang. The research design used was a factorial experiment which was laid out in randomized completely block design. Seedling growing media used were top soil 100%, mixture of top soil and saw dust compost in varying rates (70:30, 60:40 and 50:50). NPK fertilizer was applied at varying rates 0; 0.5; 1.0; and 1.5 g/seedling. Seedling height, diameter and quality index were used as variables of seedling growth. The results revealed that seedling growing medium, rate of NPK fertilizer and their interaction significantly affect seedling height and diameter. Mixture of top soil and saw dust compost at 50:50 and applied with NPK 1 g/seedling is the best media producing seedling height, diameter, and quality index of 12.22 cm, 2.19 mm and 0.13 respectively Swietenia macrophylla Swietenia macrophylla