PENGARUH PUPUK ORGANIK PETROGANIK TERHADAP PERTUMBUHAN SEMAI SENGON (Paraserianthes falcataria)

Abstract

This research is motivater by the problem of the limited availability of sengon wood raw materials, and has not met the world"™s wood needs. In an effort to meet the world"™s timber needs, the government is rolling out a program to plant 1 billions sengon trees. One that supports the growth of sengon well is the provision of fertilizer. Petroganik fertilizer is one of the organic fertilizers derived from organic materials that have been processed effectively and efficiently. This study aims to obtain the optimum dose of Petroganik fertili

zer for th growth of sengon seedlings. This research is an experimental research using Rancangan Acak Lengkap (RAL) In this study there were 5 treatments which each treatment is denoted by A, B, C, D, and E. Treatment A (0 g), Treatment B (30 g), treatment C (60 g), Treatment D (90 g), treatment E (120 g). Each treatment is repeated 5 replications, so that there are 25 experimental units. The result showed that the dose of Petroganik fertilizer on sengon seedlings had an effect on growth in height, diameter, number of leaves, and Rasio Pucuk Akar (RPA) of sengon seedlings, but did not effect to Indeks Mutu Bibit (IMB), and the optimum dose for each growth variabel has a different optimum dose, for height and number of leaves, the optimum dosewas 60 g (treatment C), for diameter and Rasio Pucuk Akar (RPA) the optimum dose was 90 g (treatment D).